Base Material – ASTM A 494 Gr. CU5MCUC.
Location to weld – Seat ring Area (Valve Seat ring).
Alloy 625 + Sttellite.
Base materials thickness – 15 mm
Welding Process - PTA Process (Plasma transferred arc welding).
Please let me know for P No, A No, F No. welding rod, and let me know any guidance on ASTM A 494 Gr. CU5MCUC qualification and requirements and sample WPS and PQR.