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Re: [MW:31547] NEW WPS with PQR'S P1G1-P1G2 combination

By Materials & Welding
When Impact test is required, we normally do a PQR between P1G1 to P1G2 which can be used to weld between

1. P1G1 to P1G1
2. P1G1 to P1G2
3. P1G2 to P1G2

when Impact test is required or when iImpact test is not required.

Thanks & Regards

J.Gerald Jayakumar



On Saturday, 10 October, 2020, 07:30:36 pm GMT+7, udaya bhaskar <dusroni@gmail.com> wrote:


Dear giants,

1.We have two Different PQRs P1G1-P1G1 & P1G2-P1G2.

2.Can I do New WPS with the Combination PQRs P1G1-P1G2?

3.Can I use the  WPS P1G1 to do welding for P1G1-P1G2?  


For ferrous materials in Table QW/QB-422, a procedure qualification shall be made for each P‐Number Group Number combination of base metals, even though procedure qualification tests have been made for each of the two base metals welded to itself. If, however, two or more qualification records have the same essential and supplementary essential variables, except that the base metals are assigned to different Group Numbers within the same P‐Number, then the combination of base metals is also qualified. In addition, when base metals of two different Group Numbers within the same P-Number are qualified using a single test coupon, that coupon qualifies the welding of those two Group Numbers within the same P-Number to themselves as well as to each other using the variables qualified. This variable does not apply when toughness testing of the heat‐affected zone is not required by other Sections.  



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With Regards

Udaya bahaskar.D

+919676270121

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