Welding produre qualification for structural steel

We have a problem of Client’s comments PQR (AWS D1.1) and rejected. Because our PQR qualified on material ASTM A36, but WPS are intended to use for material S275JR.
Please advise the cause of rejection.

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Yes, EN 10025-2 S275/275JR fall in group of an unlisted material (refer table 3.1). So, any change material group in table 4.9 and para 4.8.3 shall be requalified WPS.
Follow para. 4.8.3, you may open the Technical Queries for discussion:
" The use of unlisted base metals shall be approved by the Engineer".

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AWS D1.1: Require new qualification for S275JR, due to different group number, refer table 3.1 & 4.9
ASME IX: ASTN A36 & EN 10025-2 S275JR are grouped in P-Number 1, refer table QW-422 & QW-424.

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The TQ should be submitted during bidding, We have did it in the RAPID project, It is very important to get approval by design engineering.

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S235JR is mentioned in P-number 1,but S275JR is not, correct me if am wrong…

Acc. to ASME section IX, EN 10025-2 S355 are P number 1.
Acc. to AWS D1.1, these material fall unlisted material.

So, welding procedure shall be required qualification under D1.1. ASME section IX covers P number 1.