spiral fracture of the research

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For spiral pipe, although the test results of the tensile specimen is essentially independent of the sampling direction, but the test results of Charpy V impact specimens but is closely related to the sampling direction. Sampling of smooth rolling direction perpend icular to the rolling direction of the the CVN value maximum. Sampling the CVN value minimum.steel cable clamps
Spiral pipe and straight seam pipe rupture distinction the latter crack initiation or expansion drive the direction of least resistance in the same direction (axial), and thus the crack initiation and expansion must be carried out along the uranium to. Maximum driving direction (the oil to the Spiral crack or extended) and the minimum resistance direction (along the rolling direction), but in contrast, are inconsistent, so there are two possibilities of crack and expansion in the direction; first vent axis; along the rolling direction (i.e. the direction of the spiral weld).stainless steel pipe clamps

Generally considered the ratio of maximum and minimum CVN of 3 or greater. May consider changing th e determination from cracking along the rolling direction.

Spiral in some cases, although the crack initiation in the rolling direction, while the large-scale expansion of cracking but it is in the axial direction, should crack criterion is calculated from the pull along the rolling direction to consider this situation.

For spiral pipe rupture at home and abroad are just getting started, some of the test data and insights needed to rise to the height of the reason perish.stainless steel clamps