2012年7月27日星期五

2012 stainless steel pipe exports gone up market in good condition


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  According to the message indicates, the 2012 Middle East oil stainless steel pipe consumption is likely will remain stable, the region s

oil industry, steel pipe, line pipe usage is likely to appear upward trend, so the forecast that China s export volume in 2012 will

increase.

pipe fitting suppliers

The rapid development of the downstream market in the 2012 Middle East will stimulate imports and vibrant local pipe manufacturing. But over

the past few years related to the construction of the oil to reach the peak, which means that the use of oil country tubular goods

temporarily are unlikely to rise. (Stainless steel pipe with 304-based, 201,316 and other material supplemented)

pipe fittings

About Middle East oil country tubular goods consumption in 2007-2008, reaching a peak in 2009 after its consumption reduced by more than

half. The JCDecaux data show that the 2007 Gulf Cooperation Council (GCC) countries oil country tubular goods consumption totaled 772,182

tons, including seamless pipe and high quality resistance welding pipe; in 2009 this figure dropped to 335,407 tons.

stainless steel tee

In most of the Gulf Cooperation Council (GCC) countries, strong investment in downstream activities, so the line pipe demand this year will

grow; 2011 in the region of line pipe demand growth compared with 2010.

Since 2012, stainless steel tube has maintained a good state of the market decline in the price of plate, bar, etc. pipe has maintained a

steady momentum, and this probably also indicates that demand for stainless steel pipe this year will be higher than last year .

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thin-walled push elbow use common performance


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 With the development of national economy and people s living standards improve, the thin-walled push elbow has become the new trend of

development of the domestic water supply pipeline system. Domestic thin-walled push to elbow the late 1990s before the advent of new pipe,

due to health and safety, high strength, good corrosion resistance, durable, long life, maintenance-free, and other aesthetic features,

pushing the system bend the strong momentum of development, have been widely used in building water supply and drinking water pipeline.

stainless steel pipe fittings

learned from parties concerned : Stainless steel compression fittings and push elbow connected with thin-walled stainless steel tube will

generate a new national standard, the connection of these two products, and construction specifications will also have national standards in

stainless steel production, only ferrochrome a accounted for about 40 percent of the cost of production. Push the system bend mainly in:

Varieties products of different specifications of the world push the system elbow, a total of about 150 000, China has so far produced only

2 million, and most of the generic products. Push the system elbow, according to even the different varieties and specifications in actual

use, in accordance with the use and performance, the use of specific use to produce good performance and trends, the most cost-effective.

Two, dimensional tolerances and rotation accuracy, pushing the system in China bend head close to the level of foreign brand names, there is

still a wide gap between the dispersion in the size of the deviation. In addition, countries have already begun to research and application

of "non-repeatable runout such a fine rotation accuracy indicators, and our research in this area is still vacant.

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Third, in terms of vibration, noise and different sound, Japan has launched a quiet and ultra-quiet bearings, our stamping elbow vibration

(acceleration), extreme value level be compared with Japanese products, the general difference of more than 10dB. Baosteel to carry out the

R & D of the shaft furnace production of ferrochrome water craft, cheap ferrochrome ore powder can be directly used its own processing to

produce content for stainless steel smelting ferrochrome water, not only can effectively reduce the cost of stainless steel production,

substantially reducing power consumption, can digest iron dust in the production process to reduce solid waste emissions.

steel pipe fittings

In the special conditions stamping elbow application technologies of stamping elbow there is a big gap of proportionality. Precisely because

of our push elbow there is inadequate from a variety of specifications to the function and quality, therefore, not only in exports, the vast

majority of departments for the low-end products, the elbow uniform price of each set of push system is only about $ 0.4, does not have any

technological competitiveness, but also in some important domestic host or domain, is basically the entrance bearing the "domination". These

industries or areas, and there is a pillar industry or field.

pipe fitting suppliers

Domestic push elbow raw material market in the processing of ferrochrome, commonly used mineral hot furnace, need to consume a large amount

of coke and electricity, coupled with the limited resources of domestic chrome ore, ferrochrome prices remain high, directly increases the

production of stainless steel costs. Stainless steel production, only the ferrochrome alloy one, accounting for about 40 percent of

production costs. At present, the domestic iron and steel raw materials markets in the processing of ferrochrome, commonly used mineral hot

furnace, need to consume a large amount of coke and electricity, coupled with the limited resources of domestic chrome ore, ferrochrome

prices remain high, directly increases the cost of production of stainless steel. Push the system bend in the actual production of certain

raw materials and process for production, to ensure the contribution and value in actual use.

PVC pipe industry core values


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 In recent years, along with the rapid development of industry and science and technology, Plastic Pipe with its unique advantages

quietly occupy half of the pipe industry, with unimaginable fast speed and are to expand their own applications and scope. Is well known

that the rust problem of aging and cumbersome not to facilitate the construction of the metal pipe has restricted the development of metal

pipe. Accompanied by alloy pipe, but the inconvenience and cost of construction of the high cost of severely restricting large-scale

application and development to solve the rust and other issues.

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    The resulting mature pipe plastic pipe industry matures, the plastic pipe industry began its anti-corrosion, no rust, anti-aging, anti-

oil, anti-acid and other features recommended by the majority of the construction unit, he Construction is convenient, is loved by the

people of one of the reasons of the pipe industry. Low cost and quickly is an important factor in this promotion. Refused to incomplete

statistics, China s 2012 plastics will reach 10 million tons, will become a new economic bright spot, however, with the large-scale

application of the Pipe, the attendant problems have emerged.

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    At present, all parts of the pipe business, large and small, good and bad, seriously affecting the development of the Pipe, What is

more, Pipe manufacturer in order to broaden the market, at the price war, the heavy impact of the pipe industry, healthy and orderly

developments. The premise of price wars is necessary to reduce costs, to reduce costs, many companies in product quality control is lax,

resulting in the quality of the Pipe being called into question. Pipe industry to better and faster hair, we should correct the pipe

industry, the industry entered a formalized fair competition and reasonable competition into every enterprise to solve the above problems,

the home government should guide enterprises to do their pipes, to the credibility of survival, quality and backed by the government can put

the appropriate measures, the pipe business must self-regulation should be given severe punishment for those malicious competition,

enterprise, competition, so that it can be serious to do pipe to ensure the quality of the pipe, maintain the order of the pipe market.

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    As an enterprise, should one make you a good grasp of the quality, so that each root of the appearance of the pipe are assured the

tubes, so that the conscience tube and do the self to maintain pipe market, reasonable competition in the competition should be promoted,

because they can improve technology and quality of service, malicious competition intolerable Pipe of tomorrow will be the core values ​​of

fair competition is a better pipe industry is more open and bright, reasonable competition is crucial to competitiveness.

stainless steel pipe fittings

green pipes will stand out in the fierce competition


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The elucidation of the residential water supply has always been important to the adoption of steel, iron, galvanized pipe, because the

inner wall is easy to rust, scaling, the growth of bacteria and microorganisms harmless impurities, so that the water caused by "secondary

pollution" in the pipeline transporting. Daily subsistence, the quality of drinking water and water mains peace is a core of people save

families. The metal tube has four major life for life shortcomings: rust, easy to corrupt, leaky, easy to scale. Galvanized steel is corrupt

after breeding all kinds of microorganisms, to purify the water in the pipe. Clean tap water to take care of bacteria like tangible killer,

always intimidate people healthy.

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The past 10 years, some get rich country has been around the legislative or create industry regulations to stop the use of galvanized steel

pipe as the water conveyance pipe, and the comprehensive use of the green pipe does not rust, no corruption, no leakage, no scaling good

pipe.

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Recently, the "12th five times the two sessions, the world people s deputies also proposed on the initiation of comprehensive implementation

of new energy saving green pipe, to promote energy saving and the cycle of economic growth". Suppression of cold-galvanized steel and

various types of composite cast iron water pipe to limit the use of hot dip galvanized pipe, promoting the use of new types of plastic pipe

and plastic pipe and other green pipe is imperative. "

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It is reported that staff initiated the relevant part of the State to introduce a series of policies and the pace of financial subsidies,

and the comprehensive implementation of the same green pipe of HDPE these new energy saving and environmental protection.
According to the first volume of building materials experts, China produced important green pipe polyethylene pipe (PE), polypropylene tube

(PP), polybutylene pipe (PB) plastic composite pipe (PAP), more than 80% of these pipes with in the construction of water supply and

radiation heating. Relative the rest of plastic pipe, more properly used for indoor small-bore water pipes, radiation mining gentle floor

heating, indoor low-pressure gas pipe. 1997 aluminum tube using a narrow range, yield less, the market rarely trafficking. However, since

1997, because the Ministry of Construction in the new room, limited use galvanized pipe, recommend use of polyethylene pipes, polypropylene

pipes, new green pipe, polybutylene pipe and plastic composite pipe is, the green pipe market sales potential, sales booming, some types of

demand exceeding supply, the people a new economic increase point and become a popular investment. According to market inquiries visit the

performance of these green pipes for two consecutive years from 2002 to 2003 recovery in production has reached more than 3 million tons, it

is estimated that 2012 will span more than 3.5 million tons.

pipe fitting suppliers


Market inquiries, visit the performance of 1997 In the future, because the green pipe market is heating up around the herd, has resulted in

the market is very chaotic, quality, yield and cost of ups and downs of market co-operation is very severe. In this regard, the Secretary-

General of the Association of suppliers of domestic molds and metal plastic property Luo Baihui the first volume, at the present plastic

pipe in China market economy is more severe, a wide range of plastic pipe production enterprises over 3000 years producing ability of over

15 million tons with an annual capacity enterprises amounted to more than 10,000 tons of 300, 20 more than an annual capacity of over 10

million tons.
Britain at the end several years of sharp market cooperation and consolidation in the industry, some of the equipment, the degree of

difference, a small production line, production of small, low quality, small factories around to enter the market and new collaborators rare

opportunity to enter. Estimated polyethylene pipe in the next several years, polypropylene pipes, polybutylene pipe and aluminum-plastic

composite pipe and green plastic pipe market will link to a stable growth trend.
Followed by the growth of science and technology, the quality of people s subsistence inexhaustible progress, self-care sense of

inexhaustible strengthen the "Healthy" and "peace" as the two main themes that contemporary people save most families. Analogy,

environmentally friendly plastic pipe water supply pipe with galvanized steel due to have the strengths of harmful corrosion resistance,

thermal conductivity is small, while more was the favorite of the contemporary city people seeking a healthy and stylish subsistence. Green

plastic pipe market in the future will inherit a stable increase in growth.

Less rigid and stress analysis of the elbow


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The elbow can be molded by threaded connection or welded form. Needed, a circular ring shell can be cut into four 90 â—‹ elbow or 6 600

â—‹ bend of the elbow or other specifications, the process is suitable for manufacturing GB Elbow Drive and elbow inside diameter of more

than 1.5 any large bend of the specifications, is an ideal method for the manufacture of large pressure elbow.

pipe fitting suppliers

The elbow of the less rigid, the pressure p ≤ 4MPa the occasion; GB elbow rigid, applicable to high temperature in the pressure of the

occasion.polygon gradually become round and eventually become a circular ring shells. There are three type of flange sealing surface: planar

sealing surface, suitable for high pressure, medium nontoxic occasions; bump sealing surface, for slightly higher pressure situations.

pipe fittings

Elbow technology is applicable to the manufacture of the working pressure is less than 10MPa, the elbow inside diameter d? 125mm, elbow

diameter D and elbow diameter d ratio D / d? 1.5 elbow bend in the path size limitation . For example, can be processed elbow inner diameter

of 12m, bend diameter is more than 60m GB elbow. GB elbow oil, natural gas, chemical, water, electricity, construction and boiler industry s

pipeline system. The tongue and groove sealing surface, flammable, explosive, toxic medium and high pressure situations. The gasket is a

plastic deformation, and has the ring of a certain strength of materials.

stainless steel tee

Most of the gasket is cut from the non-metallic plate down, or by a professional factory production of the required size, the material is

asbestos rubber sheet, asbestos sheet, polyethylene sheet; asbestos rubber gasket for steam temperature below 450 ℃, oil temperature below

350 ℃, pressure is lower than 5MPa occasions corrosive media, the most common acid-resistant asbestos board. Also useful for sheet metal

(white metal, stainless steel) wrapped up the asbestos and other non-metallic materials made of metal-clad gaskets; there is a band together

around the system from the thin strip and asbestos spiral wound gasket. Ordinary rubber pads on the occasion of the temperature is below 120

° C.

stainless steel eblow

PRR pipe links Overview


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PPR pipe is connected only when the branch pipe and the other two in diameter known as the reducing tees. Both ends of the same diameter

as equal diameter tee. They are often used in the plumbing and home improvement ppr pipe. Has a significant role and value in use is

essential ppr pipe one pipe connection.

pipe fittings

Ppr pipe connection tee pipe connection between the more the security. Because the three links is a compression connection, the connection

strength and seismic performance. He can be the site of connection time and do it right the first time, to avoid the possibility of loose

connections. Ppr pipe three links in the use of pipe with good value in use, has played an important role in the connection, the following

complex Haike tube industry give you a brief ppr tube three links in the characteristics and use:

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ppr pipe pieces three links entrapment connection pipe connection, the link can easily, and long life, high environmental performance, this

pipe can be surface mounted can also be installed, but the results are very good, good looks. Time and effort to avoid site welding grooving

operations, using hydraulic tools, to use the province, the cost is not high.

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ppr pipe pieces of three links, use of heating, air conditioning, drinking water, fire, hot and cold water, gas and other civilian low

pressure fluid, sometimes also used for liquid delivery of food, pharmaceutical, chemical, beverage and other industries.

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knowledge of the three links


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Equal Tee, beautiful appearance, smooth surface, acid and alkali, anti-corrosion, texture performance. The welding diameter stainless

steel tee forged excellent, smooth surface, acid and alkali high temperature, reasonable prices, beautiful appearance, texture performance.

Extensive use and promotion Tee in different areas such as Tee specifications: DN10-DN150, etc., etc., show a good performance and

advantages in different industries play an important role. Such as the appearance of the Tee is relatively smooth, have good sense of beauty

and texture, allowing users to have a good feeling in use, does not produce disgust.

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Reducing three links plus a small section of the competent branch pipe, apparently, two large size is in charge, indirectly out of the small

size is the branch pipe.

pipe fitting suppliers

GB, standard electric, water standard, American standard, German standard, Japanese standard, the Russian standard and so can be divided

into the three links to the division of manufacturing standards. Production methods can be divided into the top system, repression, forging,

casting and so on. Line with GB, standard electric, water standard, American standard, German standard, Japanese standard, the Russian

standard, etc.. Material divided into carbon steel, cast steel, alloy steel, stainless steel, copper, aluminum, plastic, argon Ge Lek, ppc,

etc.. . In the oxygen pipeline pressure when the oxygen activity; such as the use of reducing tee, as long as the tube debris moves with the

flow of oxygen, because the diameter change, the flow rate changes may cause debris The collision with the tube production electrostatic

discharge capacity with the fire source or due to flow rate changes may cause oxygen tube on fire.

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Hyperbaric three links to the natural gas - oxygen mixed gas as fuel, use the tile-shaped gas flame heating coil will be heated tube Bureau,

and special equipment on the tube to push hot pull molding technology, this new process is particularly suitable for promote the use of the

construction unit of the natural gas source. Three links of stainless steel threaded high pressure forged excellent, smooth surface, acid

and alkali high temperature, reasonable prices, beautiful appearance, texture performance. High-pressure three links are widely used for

water power, food, beer, dairy processing and production.

stainless steel tee

Reducing Tee pipe fitting technical parameters and processing methods


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 Reducing Tee pipe fitting equipment: in the pipeline safety Sticky device, the device including metal rods, top pressure, commutator,

such as a stent; to metal rods heated, jacks and metal rods out the top of the reducing tees, wall material inside out to form the natural

rough; and the corresponding specifications of a certain length of pipe welding in the top rough on the formation of reducing tees, to

produce the final product.

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Technical parameters:

Operating temperature: -40 ℃ ~ 200 ℃;

2, corrosion resistance: pipe welds by the salt spray test without corrosion.

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3, tensile strength: not less than 520Mpa elongation of not less than 35%, the measured value 733Mpa;

Squash experiment: the pipe crushed to the outside diameter of 1/3, no cracks or gap;

pipe fitting suppliers

5, implementation and reference standards: GB/T12771-2000 "fluid transport stainless steel welded pipe," and GB/T12459-2005 steel welded

seamless pipe fittings.

6, after the pressure test: pipe and pipe fittings to connect 2.5Mpa pressure 5min conditions, the junction no leakage;

7, the pull-out test: socket argon arc welding pipe fittings to connect the pulling force is three times the national standard;

8, pressure test: Each pipe fittings have been 1.6Mpa air pressure test;

pipe fittings

Tube processing method of reducing tees: the mark and the mark on the pipe to be machined reducing tees at penetrated. Reducing tee tube

processing methods to adapt to different specifications of pipe reducing tees tube processing; its dedicated processing equipment, simple

structure, low cost manufacturing Reducing tee do not need another injection molding machine and plastic injection molds, can be reduce such

pipe production costs, improve production efficiency.

alloy elbow Detailed use


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 Alloy elbow use is very extensive. Ordinary bronze alloy elbow is more common in the general water pipe, but with the improvement of

living standards, many of the water pipe to switch to stainless steel elbow.

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    Manganese steel alloy materials elbow due to manganese steel alloy elbow to withstand the impact, extrusion, material wear is a variety

of excellent performance, is often used in concrete pipelines, slurry pipelines, and other wear consumed more serious in the pipeline.

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    High manganese steel alloy elbow were used in the fluid flow is more intense, a relatively strong impact of the pipeline; nickel alloy

steel bends alloy elbow is a variety of head usually with high concentration of oxidizing acids (nitric acid, sulfuric acid) room

temperature pipeline in the pipeline to restore the acid (hydrochloric acid, sulfuric acid, etc.) will be severe corrosion, unless the low

concentration of hydrochloric acid;

stainless steel pipe fittings


    Martensitic alloy elbow below 650 ℃ high temperature strength, the ability of antioxidant alloy elbow variety, and corrosion resistance

to water vapor, but the poor weldability. Therefore, often used in high temperature water vapor transmission pipelines, water gas pipeline.

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introduced the application and processing of the tee


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Stainless steel tee with a branch in the pipeline because of its easy to use, a wide range of applications in the field of chemical

engineering, civil construction, machinery manufacturing, shipbuilding industry.
Three links is for the pipeline branch at a pipe fitting. In terms of the three links of seamless pipe manufacturing, the process usually

used hydraulic bulging and hot forming two.

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a. Hydraulic Bulging
Three links of the hydraulic bulging bulge out of the branch of a forming process of metallic materials axial compensation. The process is a

special hydraulic machine, and the three-way equal to the diameter of the tube within the injected liquid to synchronize the movement in two

horizontal side of the cylinder through the hydraulic machine, extruded tube, the tube by the smaller size after extrusion, tube smaller

liquid volume with the tube and the pressure rise to three links manifold expansion pressure is reached, the metal material in the side of

the cylinder and the fluid pressure in the tube within the dual role of flow along the mold cavity bulge out of the branch pipe.

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b hot forming
Three-way hot forming will be greater than three links, the diameter of the tube, crushed to about the size of the diameter of the three

links, to open a hole in the stretch manifold parts; tube by heating, into the forming die and the tube loaded tensile manifold die blank;

tube under pressure, radial compression, radial compression process in the metal flow to the direction of branch pipe and the formation of a

branch pipe die tensile. The whole process is forming the radial compression of the tube and manifold parts of the drawing process.

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Hydraulic bulging tee, hot pressing three links-branch tube metal is compensated by the radial movement of the tube, also known as radial

compensation process.

steel pipe fittings

2012年7月21日星期六

The history of the flange and flange basic knowledge


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 Flange casting first proposed in 1809 by British Erchardt, until the early twentieth century flange gradually been adopted to

promote. China in the 1930s began to use the flange, cylinder castings such as iron pipes, copper sleeve, cylinder, bi-metal steel back

copper sleeve, use casting. Seamless Gang Special Steel pipe blank, paper machine drying drum production in heat-resisting steel roller,

flange casting method with very effective.

Stainless steel Pipe Fittings

The current system has a high degree of mechanization and automation of the flange casting

machine, built a large number of production mechanization flange Ductile Iron Pipes workshop. Almost all casting alloys can be used for

the flange casting production, the minimum inner diameter of the flange casting up to 8 mm, maximum diameter of up to 3m, casting the

maximum length of up to 8m, the weight of the flange casting range of a few cattle to tens of thousands of cattle (a few tenths of

kilograms to tons).

Pipe Fittings

    Flange casting, liquid metal filling the mold and solidified in the rotating case, and thus the flange casting has the following

characteristics: liquid metal in the mold to form a hollow cylindrical free surface, thus can not type the core will be able to cast a

hollow casting, greatly simplifies the sleeve, the tube casting production process, so that the casting process is greatly simplified,

high productivity, low cost; flange force due to the rotation of the liquid metal. flange casting process can improve the ability of the

metal charge and the town of mold, some of the less liquid alloys and thin-walled castings are available flange casting method of

production; the role of the flange force to improve the conditions of feeding, gas and non- metal mixed easily discharged from the

liquid metal is more dense, so the organization of the flange casting shrinkage (shrinkage), porosity, inclusions and fewer defects,

good mechanical properties; elimination or significant savings in metal casting system and riser consumption, high utilization of metal;

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Seamless Pipe Inspection


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A pipe visual inspection
Visual inspection should be piece by piece.
2 surface should be smooth oxide.
3 not the depth is greater than the nominal wall thickness of 5%, and the maximum depth is not gained more than 0.8mm of scarring,

folding send, rolling, folding, separation and other defects.

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4 depth of more than nominal wall thickness of 12% or greater than 1.6mm mechanical scratches and pits should be removed.
Two pipe shape and size to check
Pipe shape and size to check
The shape and size of the pipe should be individually examined, and shall conform to the requirements of the standard 4 and 6.1.
Pipe cloth hardness test
Carbon steel and austenitic stainless steel pipe fittings, each batch should be pumping 3% and not less than two hardness test results

if an inappropriate, should redouble their inspection, if there is a failed, should be piece by piece test. Alloy steel pipe should be

piece by piece, the hardness test.

Stainless steel flange


Four pipe fittings of non-destructive testing
1 of the following products should be by magnetic particle or penetrant testing
A carbon steel, stainless steel, three or four.
The various types of B alloy steel pipe fittings.
2 test according to the provisions of JB 4730, I-level qualified.

Stainless steel tee


3, no micro-cracks.
5, low temperature impact toughness test
16MnDR, 09Mn2VDR low temperature steel, have to do low temperature Charpy impact test, the test specimen should be selected in the same

batch of base metal, and pipe the same as the final heat treatment condition. Test requirements and test results should be consistent

with the provisions of the GB150.

Stainless steel elbow


 

flanges using the process of disclosure of how to solve


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 Flange due to flange connection when the improper use of years too long in the course of disclosure of the situation in this case

users need not panic.

Sanitary pipe fittings


    First check the leak site, generally due to flange connection gap minima at the leak site through the gap into the sealant to

eliminate leakage. Sealed construction methods according to leak parts of the site investigation for the realization of limited block

fixture method inclusive leakage points to form a sealed chamber, into the sealant, thereby eliminating the leak. Side of the fixture

are made fixture to meet inclusive leak, the establishment of the first points of the body flange and pipe flange connection between the

short section flange seal chamber.

Stainless steel flange


    In order to prevent pressure - potential leaks of the body and the flange gap appeared and then leak, located in the fixture and the

valve body flange outer edge of the anastomotic ring cavity plastic injection. Reducing flange fixture in the process of injection agent

is easy to trail flange lateral displacement occurs, it is the clamping of the limit measures of the tooth contact. In operation when

the sealant curing, after the effect of observation, local recharge pressed, to prevent stress relaxation, and then closed the hole

injection agent.

Stainless steel tee

bad manufacturers lead to lower profits of the large flange


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Large flange in the production of the initial profit is considerable, the highest 40% of the profits, or even higher. Because the

differences in the production process and production conditions led to the rare manufacturers in the initial large flange, followed by

huge profits, and a broad market.

Pipe Fittings


    Caused by the huge profits and broad market is crazy sales and bad manufacturers, large numbers of recent years throughout the large

flange factories springing up to take out. Not bring a unified management and orderly marketing, but the adverse competition. The

quality level of missing products flooded the large flange the market, the price is a pressure and then pressure. Large flange of the

original non-standard products, products made out of all standard. Regardless of thickness, diameter size. Or flange bolt hole and

center distance. These are each minimum standards of the large flange manufacturer. Bad manufacturers of the technology can not do

anything easy, product quality is also a low and then low. Leading to the development of a large flange to the quality and price is a

mess, the whole market is pandemonium.

Stainless steel Pipe Fittings


    I Mason calls this the large flange manufacturer, quality is our life. Unscrupulous competition can only be self-defeating, we must

protect our market. Otherwise, not only us, everyone in the entire market will be difficult to do.

Sanitary pipe fittings


 

Myth of the elbow flange of network marketing


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"Elbow flange network marketing?" When many SMEs faced such a question? I would like to mind will have a different answer, "promote"?

Taobao shop "? "Online sales"? "Online show"? "Alibaba"?
Baidu, google, Alibaba turns network marketing literacy, many small and medium entrepreneurs know the search engines, PPC, etc. Know how

to network with the spread of changes in consumption habits, but also to build their own website. Buy online marketing tools, and

conditions can also set up e-commerce hand to operate. But the actual operations of many companies is not ideal, put into operation more

than unreasonable, and not feel the actual effect call fooled. Internet marketing can be seen easier said than done, I observed five

kinds of small and medium-sized elbow flange enterprise network marketing is easy to step into the common "myths".

Stainless steel tee


Myth: re-design, re-marketing
Elbow flange corporate website is a foreign image window, the corporate website will showcase the company image, product features, team

philosophy, corporate culture, the scale level, sales policy, the window of course, to build good, "beautifully designed, To fully

demonstrate the strength, I would like to emphasize the most is that many entrepreneurs in the establishment of the station when the

corporate website is just this function, then the value of the site is compromised.

Stainless steel elbow


In fact, corporate websites, in addition to assume the function of the external image display, there are important sales function, and

communication of corporate culture functions, if the only value the design, very easy to walk into a misunderstanding: spent a lot of

costs to the advertising agency design website America round of US-Huan, the company from top to bottom are all commendable, this last

look beautiful site actually did not bring to the enterprise any benefits, why? Either all Flash design, website slow was a half-day

open, or too many dynamic design and difficult to search engines to crawl, and some even search engines are not submitted, enter a

company Baidu Google Keywords related companies can not find, of course, these are just a stupid mistake, I have to remind our

entrepreneurs do not just eyes staring at the website design, colors, animation processing, more should take into account whether the

site in accordance with the marketing and promotion requirements to design the architecture, columns, graphics, etc., so that customers

can more easily find a site and have a good online experience.

Stainless steel reducer


Myth two: re-promotion, not to weight management
Some entrepreneurs are very clearly one of the major functions of network marketing is the fast and wide release out to allow customers

more places to see the company s Web site and related information on the network as far as possible, so each search engine to go to

auction, buy some portal advertising, and some also bought a large number of Business Express, the student and the Friends of the

business information publishing software, and then wantonly released to recruit employees of a computer background. Some also directly

require the company to employees in the publishing company s products ads in some of the BBS, which could have been understandable, and

the increase in the amount of web publishing has a positive impact on the flow of import to the corporate website, I emphasized that the

network marketing and other marketing, but also need carefully planned, carefully managed. Imagine customers on a business or brand to

promote information found in the search engine, but a lot of information, some enterprises have done a lot of online advertising, but

the customer service team, poor management, customer service is not timely and regular basis receive professional training, customer

inquiries can not get timely feedback to customer inquiries can not get a timely and professional answers to the customers to track

return visits can not be carried out according to specifications; some enterprises have never nor scientific assessment of the promotion

effect, to adjust and improve the promotion strategy, then even Network marketing will be management of tired, because the promotion of

business opportunities arising from waste behind marketing management.

Pipe Fittings


Myth: heavy promotion, not heavy on policy
Some companies are very aware of the importance of network marketing, is also generous in the promotion of money, but put into

production completely out of proportion, a lot of tactics, strategy does not all vain, specific performance, the most common, there are

two: a bell site features Tandaqiuquan, the positioning is unclear, and some corporate website both want to take to demonstrate good

corporate image, and want to achieve the online sales, and some even reach Join the purpose of such a "synthesizer" website often vague

position, which makes the "grotesque", customers see the site, do not know this site in the end is what to do. In fact, solve this

problem is very simple, First, clear at this stage through the network to what end, what audiences come to consider the design of the

site layout and marketing, according to this, some enterprises will be based on actual demand to create multiple different functions of

the site, on the one hand on the network to promote the other hand, can be more targeted to achieve the purpose of a business through

the website. In another case of network marketing is not the overall planning system policy thinking, some enterprises stand revised

several times a year, the brand style and image demands inconsistent, a confusing strategy to convey to customers and brand recognition,

so that would also like to networks play a sales function, easier said than done?
Myth four: heavy promotion, re-integration
Characteristics of the network has all unprecedented deepen and complement Schultz of integrated marketing communication theory, whether

it is the customers face the external environment for enterprises, public or internal staff, network breadth of interactive The

timeliness of the full marketing made possible because of this, managers must pay attention to the integration of forces.
Network marketing as the marketing aspect, responsible for branding, corporate image, product sales, customer service functions, should

be completely integrated into the height of the corporate strategy planning its marketing strategy must be consistent with the corporate

strategy. If you only attach importance to the promotion of the network, do not attach importance to the integration of network

marketing personnel, information and other resources within the network to promote the actual effect, there may be a waste. Marketing

team has not been consolidated and integrated planning, but also generate inconsistency may be external information dissemination. For

example, some enterprises a number of departments are involved in network marketing aspect, which in itself is no problem because

network marketing systems engineering covers a wide range, but the decision-making, systems thinking in the implementation of the

surface, then there is no effective integration, network promotion on enterprise, the brand is to have a negative effect, if any

enterprise network platform external price and promotional activities inconsistent as examples.
Myth: heavy network, do not re-team
SMEs due to the size and structure, many do not want to set up special departments to achieve network marketing, network marketing is a

complex talent aggregation "special forces" only truly focus on this, "Jones" in order to in corporate marketing also strong support for

traditional marketing.
Responsible for this misunderstanding, entrepreneurs. Enterprises to truly focus on the network, it is necessary to attach importance to

network professionals, to give room for development and training opportunities, many SMEs, not a professional network of companies, that

network personnel dispensable, some veterans have problems, common words Jianzhan outsourced to a company does not have a "fact, this

sentence is not wrong, but the problem is that no matter what stage of enterprise development, network marketing must not be too

dependent on external, even if the outsourcing must also have their own network marketing backbone, for two reasons, an enterprise need

for confidentiality, a lot of information of the company s Web site is open now, competitors can often be based on the online public

information intelligence analysis, which information the release, what information is how to publish by the enterprise market, these are

must considerations; Some companies, network marketing is a business project unit, the enterprise of payment, an important part of

network marketers becomes evident.
Of course, a suitable actual lean enterprise network marketing team and other personnel, and very often can be met not make the need to

recruit, you need training, need precipitation.
Today, with over 200 million Internet users in China has become the world s Internet users, Internet marketing also has become an

important promotional and marketing tool in many enterprises, many SMEs rely on network marketing fast to create awareness, and some

directly to the formation of sales growth point, and even unconventional leapfrog development, the network has become the companies most

likely to create the miracle of a position. Today as well as entrepreneurial attention to the network, old atavistic believe in "sell

themselves" and eventually was abandoned by the market

large volumes flanges production characteristics of use


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The flange can be classified by size: small flange, medium flanges, large flange. Connection type can be divided into: plate welded

flange, energetic flat welded flange, welded flange, socket welding flanges, threaded connection flange here focuses on the production

process and the use of the large flange.

Stainless steel elbow


Large-scale roll flange is a flange, use and promotion, in the machinery industry in general and popular acclaim from the user s. Rolled

flange wide range of uses, the use of different characteristics to be determined and used for medium conditions easing, such as low-

voltage non-clean compressed air, low pressure circulating water, its advantage is that the price is cheaper. Rolled flange for

connection pipe at a nominal pressure of not more than 2.5MPa rolled flange sealing surface can be made into a smooth style, bump and

tenon slot three smooth style rolled flange application of the largest two other ways of rolling the flange is relatively common in use.

Stainless steel reducer

Rolled flange including a variety of types and models, butt welding steel flanges for the counterpart welding of the flange and pipe,

mainly used in welding technology, and to have good performance characteristics and performance, reasonable structure, strength and

stiffness withstand the high temperature and high pressure and repeated bending and temperature fluctuations, sealing and reliable, the

nominal pressure of 0.25 ~ 2.5MPa rolled flange bump-type sealing surface. Rolled flange application environment is appropriate,

determined according to the specific situation to ensure that the specific use of value and performance of the roll flange bear live in

high-temperature high-pressure.

Pipe Fittings


Large roll flange plate cut into slats, then the volume made round re-processing the waterline, and bolt holes. So generally large

flanges, can be 7 meters. Such flange has a good quality assurance. Because the raw materials in plate density. The materials are carbon

steel, stainless steel, alloy steel.

Stainless steel Pipe Fittings


In the machinery industry, many manufacturers use the flange (also can be said is to strengthen the ring) only as a connection or

support role, the need to strip (flat steel) can be used directly in the volume flange on the device directly rolled into the ring can,

this processing method the provincial labor and materials, significant cost savings.

Production characteristics and uses of the large flange


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 Flange dimensions can be divided into: small flange, medium flanges, large flange, according to the type of connection can be

divided into: plate welded flange with a neck welded flange, welded flange, socket welding flange threaded connection flange here

focuses on the production process and uses of the large flange.

Stainless steel reducer


    The large flange is a flange, use and promotion, in the machinery industry in general and popular acclaim from the user s. Rolled

flange wide range of uses, the use of different characteristics to be determined and used for medium conditions easing, such as low-

voltage non-clean compressed air, low pressure circulating water, its advantage is that the price is cheaper. Rolled flange for

connection pipe at a nominal pressure of not more than 2.5MPa rolled flange sealing surface can be made into a smooth style, bump and

tenon slot three smooth style rolled flange application of the largest two other ways of rolling the flange is relatively common in use.

Rolled flange including a variety of types and models, butt welding steel flanges for the counterpart welding of the flange and pipe,

mainly used in welding technology, and to have good performance characteristics and performance, reasonable structure, strength and

stiffness withstand the high temperature and high pressure and repeated bending and temperature fluctuations, sealing and reliable, the

nominal pressure of 0.25 ~ 2.5MPa rolled flange bump-type sealing surface. Rolled flange application environment is appropriate,

determined according to the specific situation to ensure that the specific use of value and performance of the roll flange bear live in

high-temperature high-pressure.

Pipe Fittings


    Large flange plate cut into slats, then the volume made round re-processing the waterline, and bolt holes. So generally large

flanges, can be 7 meters. Such flange has a good quality assurance. Because the raw materials in plate density. The materials are carbon

steel, stainless steel, alloy steel.

Stainless steel Pipe Fittings


In the machinery industry, many manufacturers use the flange (also can be said is to strengthen the ring) only as a connection or

support role, the need to strip (flat steel) can be used directly in the volume flange on the device directly rolled into the ring can,

this processing method the provincial labor and materials, significant cost savings.

Sanitary pipe fittings


 

large flange using performance


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 Large flange integral flange welded flange and welded flange. Less rigid welded flange for pressure p ≤ 4MPa the occasion; welded

flange, also known as high-neck flange, rigid, applicable to high temperature in the pressure of the occasion.

Stainless steel tee


    There are three type of flange sealing surface: planar sealing surface, suitable for high pressure, medium nontoxic occasions; bump

sealing surface, for slightly higher pressure situations; tongue and groove sealing face, applies to flammable and explosive toxic

medium and high pressure applications. The different nature of the pipe flanges with good performance in different areas to adapt to the

occasion and space, the resulting effect will be different.

Stainless steel elbow


    The large flange gasket is a plastic deformation, and has the ring of a certain strength of materials. Most of the gasket is cut

from the non-metallic plate down, or by a professional factory production of the required size, the material is asbestos-rubber sheet,

asbestos, polyethylene board of asbestos; also useful for sheet metal (white metal, stainless steel) non-metallic materials wrapped made

of metal-clad gasket; there is a band together around the system from the thin strip and asbestos spiral wound gasket.

Stainless steel reducer

Asian large flange development trends


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Welded flange can be used in different industries can play an important performance in certain market areas, to show the performance and

role. China s accession to the WTO, it has gradually become an international trade body, but also contribute to the expansion of the

global economy, and Asian economies have a major impact. China is in transition as a "manufacturing giant", the development of local

enterprises in China, and the coastal areas of industrial integration, has begun to redraw the territory of the industry in Asia. In

particular, ASEAN Member States, due to proximity, will be directly affected Asian countries and the main issues is how to prevent the

hollowing out of industry, China s industrial progress is being contributed to the ASEAN Member States under the pressure of

competition. Structural reform, the formation of economic integration.

Stainless steel Pipe Fittings


In Japanese manufacturing the most important customers to the automotive industry around the welded flange strategic international

acquisitions, the economic environment is rapidly changed. Sustained economic recession, the relocation of production plants to the

Japanese forging industry in dire straits. Nevertheless welded flange future will remain the same as before, is the driving force of

economic development in Japan, but fortunately the welded flange, Japan domestic materials industry with high quality, excellent

technology of machine tools and other related assets when backing.

Sanitary pipe fittings


Asia welded flange production ranked first, in 2000 the annual output of 2.25 million tons, 2.46 million tons in 2001, in recent years,

growth rate has slowed down. Japan s 1990 annual output of 2.43 million tons in 1998 dropped to 1.9 million tons until 2001, annual

output will remain unchanged. And look at a less rapid recovery of vision. India s annual output of 400,000 tons, South Korea, an annual

output of 700,000 tons, are facing the same situation. Welded flange needs are diverse, such as automobiles, construction machinery,

rail vehicles, shipbuilding industry needs. The proportion of forgings used in automobile industry in Japan 67 percent, 49 percent in

India, South Korea 41%, China 40%, these proportions will change as the future trend of the national automobile manufacturing. Enough to

strengthen the exchange of information between the forging industry in Asia, and the further development of the forging industry.

Stainless steel flange


Welded flange industrial history in Japan has more than half a century, during which supports the machinery industry in Japan and

Japan s economy has a great contribution. Welded flange, Japan Association and Japan welded flange Institute of Technology in June 2002

will be integrated with the aim of two members of the organization to strengthen the organization and its functions, making it more

efficient operation. This will enhance services to members, in order to adapt to modern trends, the forging industry and international

standards.

Stainless steel tee


Welded flange trends in Asia, prospects for the development and trends, and to promote its good performance trends play a role and

value, able to demonstrate a certain contribution. Welded flange to the use of advanced technologies and processes for production and

production, able to produce high product quality and performance of welded flange. Meet the need of the use of different industries.

flange processing standard instructions


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Application amount of smooth-type flat welding flange, weld steel flanges for nominal pressure of not more than 2.5MPa carbon pipe

connection welded flange sealing surface can be made into a smooth style. Used for medium conditions of relaxation circumstances, such

as low-voltage non-purified compressed air, low pressure circulating water, the advantage is the relatively inexpensive price,

reasonable structure, butt welding steel flange: for the the counterpart welding of the flange and pipe strength and rigidity to

withstand the high temperature pressure, and repeated bending and temperature fluctuations, reliable sealing. bump-type nominal pressure

of 0.25 2.5MPa welded flange sealing surface.

Sanitary pipe fittings


    Flange production standards:
    GB: GB/T9112-2000 GB9113 1-2000 GB9123? 4-2000
    American Standard: ANSI B16.5 Class150 300 600 900 1500 WN SO BL TH LJ SW
    Japanese Standard: JIS 5K 10K 16K 20K the PL SO the BL of WN the TH the SW
    German standard: DIN2573 2572 2631 2576 2632 2633 2543 2634 2545 PL SO WN BL TH
    Ministry of Chemical Industry Specification: HG5010-52 HG5028-58 HGJ44-91 HGJ65-91 with HG20592-97 Series, HG20615-97 Series
    Ministry of Machinery Standard: JB81-59 JB86-59 JB/T79-94 JB/T86-94 JB/T74-1994
    Pressure Vessel Code: JB1157-82 JB1160-82 JB4700-2000 JB4707-2000 B16.47A / B B16.39 B16.48.

Stainless steel flange


    Pipe socket welding flanges commonly used in the PN ≤ 10.0MPa DN ≤ 40, the flange contact with the media, local (short flange

section) for corrosion-resistant high-grade materials such as stainless steel and other materials, while the external use of low-grade

materials such as carbon steel flange ring clamp it in order to achieve the seal;

Stainless steel tee


    Commonly known as loose flanges, loose flanges: loose flanges points welding ring loose flanges, flange live flanges and butt loose

flanges. Commonly used in medium temperature and pressure is not high and medium corrosion strong. When the strong corrosive medium.

Rare integral flange welded flange and welded flange. Flange pipe fittings refers to with a flange (flange or disk access) fittings. By

casting, stainless steel flanges fittings, pipe and tube interconnected parts. Divided by type of structure. By threaded connection or

welded form. Flange connection refers to a pair of flanges, a gasket and a number of bolts and nuts. On the two flange sealing surface

between the gasket, and tighten the nut on the gasket surface deformation than the pressure reaches a certain value, and fill the Office

of the uneven surfaces of the sealing surface, so that the connection not leak tight. The flange connection is a removable connection.

Holes in the flange, can be worn bolts, two flange abuts between the flange gaskets for sealing. Connected components can be divided

into the container flange and pipe flange.

Stainless steel elbow

2012年7月19日星期四

high-end fittings application prospects open


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Metal pipe industry in China s development for nearly 30 years, closing to the end of 2010, the national oil pipelines and fittings

manufacturing, natural gas pipelines and fittings manufacturing, municipal engineering pipeline and pipe fitting manufacturing and

insulation, refrigeration pipe manufacturing enterprise has more than 4,000 of them engaged in The metal tube manufacturing enterprises

reached more than 1,900. In these metal tube manufacturing companies, including a large number of SMEs, there is the production of low

technical content, the lack of core technology and other issues are often limited in general metal pipe manufacturing. However, the

amount of standard capacity of the market mainly in the high-end metal tube manufacturing. Pressure on the distinction between high-

pressure pipe production business accounted for only 35% of the total number of industries and enterprises of the entire metal tube, but

the creation of 60% of the total output value of industry.

Stainless steel reducer

High-end fittings in molding technology, welding technology, heat treatment technology, detection technology, the design level, there is

large room for improvement. With the refinement of social division of labor, the downstream industry toward the sophisticated

development of the pursuit of social and economic benefits of a win-win, and improve the technical requirements of pipe products, the

market demand for high-end fittings are constantly growing. Development of the industry so far, in the various segments of the high-end

fittings on the market also emerged a number of leading enterprises such as oil and gas transmission pipe market leader in sea Heavy -

market share in the oil gas and chemical pipe field are ranked first in the country ; in the ship management market leader in Central

South Heavy Industries - has been successful domestically listed; dominate the field in the pipe market in the nuclear power peak tube

industry - has the most advanced nuclear power pipe manufacturing and inspection techniques.

Pipe Fittings

To east, these familiar works, laying of China s oil and gas transport in a main artery for China s economic development, providing a

solid support for oil and gas energy, natural gas and Sichuan gas. 12th Five-Year period, China will continue to accelerate the speed of

the oil and gas pipeline construction, key construction projects, including two of Kazakhstan crude oil pipeline, gas pipeline within

the territory paragraph, the Central Asian natural gas pipeline two and three-lane West to East, West-East Gas transmission and four-

wire project. "12th Five-Year" period, the country will add the oil and gas pipelines 7.4 million kilometers, 4.5 million meters of

natural gas pipelines, 0.9 million meters of crude oil pipelines, oil product pipeline 2 million meters of a total investment of 350

billion yuan. (Source: China Petroleum Planning and General Hospital). 2011, the first year of the "12th Five-Year Plan, the first year

of the five-year plan, usually the industry layout and investment planning, together with supporting domestic pipe production capacity,

as well as other factors limit pipeline length of China s new this year is expected to remain at 10,000 meters, the same as in 2010.

[Source: China Petroleum Planning and Engineering Institute] Beginning in 2012, the upstream firm will begin to invest in capacity

expansion and technological upgrading to meet the accelerating demand for pipeline construction. 2012-2014 is expected, pipeline

construction will gradually accelerate, to the "12th Five-Year" the end of the 2010 annual construction, especially the speed of the

pipeline will improve 80%. Average based on the investment situation of China s "Eleventh Five-Year" during the project, China s natural

gas pipeline for every construction of a km to invest about 950 million, of which about 70% for pipeline construction, pipeline

construction costs of approximately 2.5% pipe costs, crude oil pipeline for every construction of a km to the average investment of

about 6.5 million yuan, of which approximately 70% for pipeline construction, pipeline construction costs of about 2.5% of the cost of

pipe, each product pipeline to build one thousand meters the average investment about 450 million, of which about 70% for pipeline

construction, pipeline construction costs of approximately 2.3% of the cost of pipe.

Stainless steel Pipe Fittings

pipe fittings, construction preparatory work before


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1, pipe installation construction requirements, the ground surface to lay the; reserved for the location of the trench and the

trench clean; windows and doors in place; in place of the radiator; construction site clean up after.

Stainless steel flange

2, pipe prior to installation to cope with the appearance of material and pipe fittings with the working poor, as well as construction

equipment to be checked. Pipe, the pipe surface if any dirt should be promptly cleaned up. Pipes during the installation process should

be strictly prevent the paint, asphalt and other organic matter pollution pipe, the pipe surface.

Stainless steel tee

3, pipe, pipe transport to the site, material handling and storage should be handled with care, arranged in neat rows. Shall be

subjected to sharp hard goods notch, collision, and shall not throw, throw, roll, drag, and sun exposure.

4, pipe, pipe fittings should be stored in room temperature over 40 degrees of the Treasury, the Treasury well-ventilated, shall be

stored with flammable liquids and other dangerous goods with the library.

Stainless steel elbow

5, the installation of cleaning agents, such as acetone, alcohol and other flammable materials, transport and storage should be fire

safety, clarification shall be stored in a dry well-ventilated warehouse, when used with the open with, away from sources of ignition.

Million to help up to pb pipe connection

6 should be checked before connecting pipe, pipe end cleaning non-destructive, the fracture is smooth, no glitches.

7, the pipe connection of the ambient temperature is higher than 5 degrees of hot-melt welder should be avoided placed in the outlet, so

as not to affect the connection quality of the welding machine.

Stainless steel reducer

Pb piping system connected to the hot melt connection, fused connections and clamping connection in three forms, in the central heating

household metering system is recommended to use hot melt connection.

The pump cavitation phenomenon, its causes


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1, cavitation
Liquid at a certain temperature, reducing the pressure to the temperature of the vapor pressure, the liquid will produce a bubble. This

bubble phenomenon known as cavitation.

sanitary fittings


2, cavitation bubble collapse
Generated when the cavitation bubbles flow to high pressure at, and its volume is reduced resulting in burst. This phenomenon known as

cavitation bubble collapse in the liquid due to the pressure of rising bubbles disappear.

sanitary pipe fittings


3, resulting in cavitation of the causes and hazards
Pump in operation, the flow part of the local area (usually somewhere in the impeller blade inlet later) for some reason, the absolute

pressure of the pumped liquid is reduced to the temperature vaporization of the liquid pressure, liquid in the Department begins to

vaporize and produce large amounts of steam, the formation of bubbles when the liquid containing a large number of bubbles to move

through the high-pressure zone within the impeller, the bubbles around high-pressure liquid causing bubbles dramatically reduced and

even rupture. In the bubble condensation rupture at the same time, the liquid particles to high speed filling holes, at this moment have

a very strong water hammer, and the impact of high frequency to combat the impact of stress of the metal surface up to several hundred

to several thousand atmospheres , the impact of frequency up to tens of thousands of times per second, will be serious wall thickness

breakdown.

stainless steel pipe fittings


4, the cavitation process
Bubbles in the pump and bubble bursting flow components suffer damage process is pump cavitation process. Pump to produce cavitation In

addition to the destructive effects of the flow parts, but also generate noise and vibration, and lead to the degradation of the pump

will pump fluid in severe interrupted, not working properly.

stainless steel clamps

What is the role of the pumps


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The pump is accompanied by industrial development and developed. l9 century, the foreign has a relatively complete pump type and

variety, and a wide range of applications. According to statistics, in 1880, the general purpose centrifugal pump output accounted for

more than 90% of the entire pump output, the power plant pumps, chemical pumps, mining pumps and other special purpose pumps, only 10%

of the entire pump output or so. By 1960, the general-purpose pump is only about 45%, and special purpose pumps account for about 55%.

According to current trends, special-purpose pump, than the proportion of general-purpose pump but also to improve.

sanitary fittings

    Back in the early 20th century, the submersible pump successfully developed by the United States first, and use it to replace the

deep well pump. Subsequently, the Western European countries have also conducted research, and continue to be improved, and gradually

improve. Such as Germany s Rhine brown coal, using a variety of submersible pumps over 2500 units, the largest capacity up to 1600kw,

lift 410m.

sanitary pipe fittings

    Our submersible pump is developed in the 1960s, the work surface submersible pumps in the south has long been used for irrigation of

farmland, and small and medium-capacity submersible pump has formed a series, and batch input production. Large capacity and high

voltage submersible pumps, submersible motors have been published ,500-1200kw large submersible pumps have been put into operation in

the mine. Open iron ore of the Anshan Iron and Steel Company YANQIANSHAN 500kw submersible pump drainage during the rainy season results

are obvious. There are signs that the use of submersible pumps will be mine drainage of change and have the potential to replace the

traditional lying pump. In addition, the greater capacity of the submersible pump trial in

stainless steel pipe fittings

    Usually collectively referred to as the machine used for pumping liquids, transportation of liquid and liquid to increase the

pressure pump. From the energy point of view, the pump is an energy-conversion machine, it can be transformed into the prime mover

machinery for the energy of the liquid is transported, so that the liquid flow rate and pressure increase.

    The role of the pump is generally used to place pumping liquid from the low-lying up places to go to higher ground along the

pipeline transportation. For example, we see daily, pump, pumping the water in rivers, ponds and from farmland irrigation; Another

example is pumping up water from deep underground and sent to the towers go up and so on. The liquid through the pump pressure can

improve the role of the pump can be used to the liquid from the container of low pressure suction, and transported to the high pressure

container or other to overcome the resistance along the way, for example, boiler feed pump suction water from the low pressure tank to

the high pressure boiler drum water supply.

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    Pump performance and a wide range of massive pump flow can be large up to hundreds of thousands of m3 / h, above; miniature pump

flow is the following in the tens of mL / h. The pressure from atmospheric pressure has been up to l000mpa. Transmission fluid

temperature as low as -200 ℃ below up to above 800 ℃. Pumping liquid type, it can transport water (water, sewage, etc.), oil, acid and

alkali liquid, emulsions, suspensions, and liquid metal.

People daily to see the pump is mostly used to transport water, so in the habit of usually call it the water pump. However, the term as

a generic term for the pump, then obviously it is not comprehensive.

Chinese pump industry technology trends


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 Follow closely the trend of technological development of the Chinese pump industry, accurately grasp the development trend of pump

technology is the basis of the pump business growth in China. Pump technology development, as development of other industries, as is

achieved by a market driven by demand. Today s twenty-first century, the huge demand generated by the field of environmental protection,

electronics and other high-tech development and world sustainable development of the main background for the pump industry, including

many of the industries or areas have brought changes in technology and rapid development. Pump technology trends, the following points:

Pump product diversification

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 The vitality of the product is the market demand. Today s market demand is asking to have their own characteristic features, to be

different; exactly this, creating a product diversification trend of pump. Its diversity reflects the diversity of media in the pump,

several aspects of the product mix differences and different operational requirements.

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From the diversity of transmission media, the delivery of the first pump for a single water and the flow of liquid, gas or slurry, and

solid-liquid mixture, the gas-liquid mixture, solid liquid gas mixture until the conveyor living objects such as soybean, fish, and so

on. The delivery of objects for the internal structure of the pump requirements.

In addition to conveying the object structure of the pump have different requirements, in the form of installation of the pump, piping

layout. Maintenance have put forward new requirements for maintenance and other aspects of internal or external structure of the pump.

Various manufacturers in the design of the structure, adding the concept of their respective companies, and to raise the pump structure

diversification.

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Based on the overall context of sustainable development and environmental protection, the design of the operating environment of the

pump to pump a large number of requirements, such as leak reduction, reduced noise and vibration, increase reliability, longevity and so

on the design of the pump side focus or a few focus on the parallel need to be taken into account, are bound to form a diversified form

of pump.

Pump product standardization and modular

Product diversification at the same time, the pump, as generic products, the overall total is still huge. In the market, in addition to

the technical competition, product price competition, particularly price competition of generic products is an inevitable trend. Trend

of diversification of products, the price of a product to achieve competitive advantage, improve the level of standardization of product

components, modular product components is necessary. In the number of components, modular, through a combination of different modules or

change the characteristics of the individual parts, in order to achieve product diversification. The same time, only when the parts

standardization improved to reduce production costs and the formation of price-competitive products, product diversification, product

diversification on the basis of the actual size of the parts production, on the basis of further shorten the delivery cycle of the

product.

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Pump design standards to enhance manufacturing technology to optimize the organic combination of

Into the information age today, the design of the pump already using computer technology to product development and design (such as the

use of CAD) greatly improves the speed of the design itself, shortening the product design cycle. -Based manufacturing in the production

of CNC Technology CAM manufacturing technology which has been deep pump production. However, the domestic situation in a few days ago,

the CNC Technology CAM applications in bulk products production. Single piece or small batch production, CAM technology is not yet

common in the pump industry in which the implementation of single and small batch production is still traditional production equipment.

As the market requires manufacturers of the goods as short as possible, especially for special products (products) shorten the delivery

cycle for the user requirements will inevitably require the manufacturers of the pump to accelerate the use of CAM technology, or even a

computer integrated manufacturing system (CIMS). Flexible manufacturing (FMC and FMS) Once the design is complete, the processing of the

product components tend to the same period is completed, to shorten the production cycle to ensure that the manufacture of molds, parts

processing from design to ensure a coordinated response to ensure

At the same time, unless the use of computer graphics will be on the computer as a carrier strength of the product analysis, reliability

prediction and three-dimensional design, the original need to find and resolve process problems in production, the local structure and

assembly issues raised to the pre-production to prevent, shorten the trial period.

CAD-based technology is widely used

     (1) pump dies, leaves, and important parts CNC machining, which can improve the manufacturing quality of the pump is shown in

Figure 1 the three-dimensional map of the CNC milling machine axial flow blades for processing leaves.

    (2) pump hydraulic design and painting software gradually instead of manual calculation and drawing someone asked how high the

efficiency of the software design of the pump, which is a layman to say, no matter how good the software but also to use, can be

integrated into the design those design ideas and experience, and fast and accurate. Figure 2 is a hydraulic diagram of JP1 software

design of the screw centrifugal pump impeller design diagram just 10min, artificial design may take two days.

    (3) The pump flow field calculation of the non-viscous flow of the quasi-ternary quasi-ternary non-viscous flow to the progress of

the full ternary viscous flow calculation method is S1, S2 two types of stream surface iteration, it is three-dimensional flow

dimensionality reduction into two-dimensional flow on the meridian plane (axial plane) and any transfer surface (surface flow) iterative

solution to solve the problem of three-dimensional flow. Due to the complex three-dimensional flow is simplified to a two-dimensional

solving, making the accuracy of the solution to be affected. Computational Fluid Dynamics (Computational Fluid Dynamics) in recent

years, referred to as CFD advent of new ideas and means for fluid mechanical flow field calculation. Using CFD flow field calculation,

is first necessary to calculate the regional painting into three-dimensional entity, and then generate a grid (Grid Generation), then

the commercial CFD software Fluent calculated, as shown in Figure 3.

   (4) internal flow field measurements before frequently used probe measurements, on the one hand control of the needle itself is a

great influence on the flow the other hand, measurement conversion device of the rotating flow field is very complex. Further use of

laser Doppler velocimetry instrument (LVD), it is the flow of particles in laser optical particle scattering measurement of flow rate,

according to the degree of scattering. This method has been mature and widely used, but generally only measure a component of a little

speed. Now start using particle image velocimetry (PIV), its working principle is the spread of tracer particles in the flow field, flow

field pulse-chip light source, twice or multiple exposure, particle images are recorded on the film The resulting flow field velocity

distribution. This method to break through the traditional single-point measurement limit can be instantaneous, non-contact measurement

of the velocity distribution on a cross-section, high measuring accuracy.
   
   (5) The optimal design method in order to improve the performance of the pump, many scholars to study the optimal design method.

Summarized in the following ways: excellent model statistics based on the speed coefficient optimization method; minimum hydraulic loss

loss of extremal optimization method; an indicator for the objective function criteria for filter optimization method. Worthy of note is

the optimal design method may only guidance on the design of the concrete pump. In addition, the advent of the CFD and other advanced

technology, in large part to dilute the interest in the optimized design, the past two years, scholars of optimal design method is

gradually reduced.

Upgrading of pump intrinsic properties and the pursuit of external features

The intrinsic properties of the pump means, including the inherent characteristics of product performance, quality of the parts, the

whole assembly quality, appearance and quality of products, referred to as quality. At this point, many pump manufacturers is also of

concern to strive to further improve, improvement. In fact, we can find many products in the factory test and found to comply with the

hair to use the unit to run, often up to less than factory factory testing results, such as overload occurs, the noise increases, the

use of below standard or reduced life and other issues; pump in which the operating point in practice or operating characteristics,

which we call the external characteristics of the pump or system features.

Technical staff during product design, to improve one percent efficiency of a product often spend a lot of thought; pump run deviate

from the design of efficient points, the actual operation efficiency is much more than a one percent reduction. Now, the pump

manufacturer as well as user support, including frequency conversion, including control equipment and equipment, in fact, have been

involved to the pursuit of the external characteristics of the pump. This basis, the concentration of pump control system, the entire

pump and pumping station operating efficiency, a higher level in the pursuit of the external characteristics of the pump.

From the sales perspective, selling products in the marketing of the intrinsic properties of the pump; external characteristics is

concerned about the pump manufacturers not only to sell products, but also in the marketing of the pumping station (complete projects).

From the use of perspective, a good product must be suitable operating environment products rather than the products of factory testing

discriminant.

To accelerate the use of new materials and new technology

Over the years, the use of new materials and new technology is a major factor in promoting the development of pump technology. Pump

materials from cast iron to a special metal alloy, a typical non-metallic materials to rubber products, ceramics and other engineering

plastics, resistant to corrosion in the solution to the pump, wear resistance, high temperature environment have played a prominent

role. The use of new technology to better enable the use of new materials to the pump parts and the whole pump. If some foreign

manufacturers have designed and launched all engineering plastic pump. No less in intensity than the general metal production pump,

superior wear and corrosion resistance. Another example is the use of the new surface coating technology and surface treatment

technology, the same can solve the corrosion resistance and anti-wear of the pump. New materials for further development and use of new

technology in depth, will be more extensive in the pump field.

The further development of mechatronic

As scientific and technological development. Interdisciplinary science and technology at this stage, more and more rich,

interdisciplinary, interdisciplinary joint research is a very common thing, as the pump technology development is also true. Shielded

pump, for example, to cancel the pump seal, must start from the motor structure is limited to the pump itself, there is no way to solve

the noise problem of the pump, in addition to solve the flow pattern and vibration of the pump, at the same time need to be addressed

motor fan noise and electromagnetic noise; to improve the reliability of submersible pumps, submersible motor additional measures such

as leakage protection, overload protection; improve the operating efficiency of the pump shall be by means of the use of control

technology. These are all details to develop the level of pump technology, must proceed from supporting the motor, control technology

and other aspects, taken together, to maximize the mechanical and electrical integration level.