Tuesday, May 9, 2017

[MW:26515] Re: PQR FOR P NO:1 GR 1 TO GR 3 MATERIAL

When base metals of two different P‐Number Group Number combinations are qualified using a single test coupon, that coupon qualifies the welding of those two P‐Number Group Numbers to themselves as well as to each other using the variables qualified. you need to qualify both combinations.
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