ICS 25.160.10 CCS C3311　　Group Standard　　T/DASIV 006—2024 (EN)　　Specification for shielded metal arc　　welding of heavy thickness P91 steel　　for nuclear engineering　　核工程用大厚度 P91钢管焊条电弧焊　　焊接工艺规范　　(English translation)　　Issue date:2024-05-15 Implementation date:2024-05-16　　Issued by Development Associatio...