美利体育登录入口官网:JIS Z 3422-1:2022 金属材料焊接工艺规范和评定 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
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