标 准 编 号：JIS Z3421-1-2003 简体中文标题：金属材料焊接程序规范及认可.电弧焊接程序规范 繁体中文标题：金属材料焊接程序规范及认可.电弧焊接程序规范 English Name：Specification and approval of welding procedures for metallic materials -- Welding procedure specification for arc welding
