Renewal of qualification may be made for any process by welding a single test coupon of either plate or pipe, and by testing of that coupon as required by QW-301 and QW-302.
如需重新获得资质，则该焊工需要遵照QW - 301和QW - 302的要求，在一个板材附件试片，或一个管材附件试片上，进行焊接试验。
The purpose of weld guide bending test is to detect plasticity of welding joint, welding process and surface defects of materials.
焊缝导向弯曲试验的目的是检查焊接接头的完好性和塑性以及材料的焊接工艺和表面缺陷。
Evaluation of welding process and hydrogen -resistant peeling test of the clad plate shows that this product possesses excellent, reliable manufacturing and operation properties.
复合钢板经焊接工艺评定和抗氢剥离试验证明，该产品具有优良可靠的制造和使用性能。
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