
Specification and approval of welding procedures for metallic materials Part 3: Welding procedure tests for the arc welding of steels; Amendment 1
出版:International Organization for Standardization

专家解读视频
Specification and approval of welding procedures for metallic materials Part 3: Welding procedure tests for the arc welding of steels; Amendment 1
出版:International Organization for Standardization
专家解读视频