Hi all,
After looked back all our client welding procedures, I found that
- Their PQR using API 5L Gr.B (P No.: S No.1; P Group No.: S Group No.1)as Base Metal.
- and their WPS using base metal:
+ P No.: S No.1; P Group No.: S Group No.1; OR
+ API 5L Gr.B or equivalent;
Applied to our...