WPS according to AWS D1.1

[nguyen duc thien Phuc]

Dear all experts, 

I have some queries for WPS making according to AWS D1.1. Hope experts can help me to explain it. Thanks so much!

- group number: In PQR if I weld material between group 1 to group 2 . (for example pipe (ASTM 106 gr.b or ASTM A500gr.C) to plate  ASTM A572 gr.50). What is the range of qualified mater group in WPS. We use GMAW process for 5F position . I can not found it in table 6.8. Just qualified gr.1 to gr.2 or can include gr.1 to gr.1 also or....

-  Is SS400 unlisted material or can be put it as group I or group II like to ASTM A36

- Fillet weld plate to plate in PQR can be qualified to fillet in pipe with all diameter in WPS and apply for T joint only (clause 6)? 

- Fillet weld pipe to plate in PQR can be qualified to fillet in pipe with limited diameter in WPS and can apply for T , Y, K joint(clause 10)? 

Thank you very much!