Specification and qualification of welding procedures for metallic materials — Welding procedure test — Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys — Amendment 1
金属材料焊接工艺的规范和评定.焊接工艺试验.第1部分:钢的电弧焊和气焊以及镍和镍合金的电弧焊.修改件1