To ensure the quality of welding products, welding procedure evaluation must be made before welding construction.
为确保产品的焊接质量，在正式焊接施工前必须进行焊接工艺评定。
Introduce implementary methods of technologic evaluation and processing procedure for product welding.
介绍了产品焊接工艺评定和工艺规程的实施方法。
First, prepare WPS, and then press WPS welding process evaluation, PQR report form, only the welding procedure qualification requirements, WPS can be used in the products of welding.
先编制WPS，然后按WPS做焊接工艺评定，形成PQR报告，只有焊接工艺评定符合要求，WPS才能用在产品的焊接上。
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