... tension weld受拉焊缝 test piece for welding焊接试板 test weld试焊 ...
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According to the standard's requirements, test piece for qualification of welding procedure and for product welding should be carried out various bending test.
焊接工艺评定试板和产品焊接试板，按标准要求都要进行弯曲试验。
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