
Quality requirements for fusion welding of metallic materials - Part 4: Elementary quality requirements (ISO 3834-4:2005)
出版:Standardiserings-Kommissionen I Sverige

专家解读视频
Quality requirements for fusion welding of metallic materials - Part 4: Elementary quality requirements (ISO 3834-4:2005)
出版:Standardiserings-Kommissionen I Sverige
专家解读视频