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  1. Swapnil M

    Dissimilar base metal welder qualifications as per ASME sec IX

    GTAW filler material was carbon steel (ER 70 S-2 ). But for production weld we have to use P1-P8 with ER309L+E309L with backing gas. Thanks,
  2. Swapnil M

    Dissimilar base metal welder qualifications as per ASME sec IX

    David/DekDee, P1-P1 GTAW+SMAW with or without backing with F.no 6 & 5 (i.e. test coupon P1-P1 was welded without backing gas for root during welder qualification test so welder is qualified for with or without backing gas). so can this qualification be used for P1-P8 with backing gas ( F no's...
  3. Swapnil M

    Dissimilar base metal welder qualifications as per ASME sec IX

    Hello, As Per QW 423.1 When a base metal shown in the left column is used for welder qualification, the welder is qualified to weld all combinations of base metals shown in the right column, including unassigned metals of similar chemical composition to these metals. Does it mean any combination...

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