
QUALIFICATION TESTING OF WELDERS - FUSION WELDING - PART 1: STEELS (ISO 9606-1:2012 INCLUDING COR 1:2012 AND COR 2:2013)
出版:German Institute for Standardisation (Deutsches Institut für Normung)

专家解读视频
QUALIFICATION TESTING OF WELDERS - FUSION WELDING - PART 1: STEELS (ISO 9606-1:2012 INCLUDING COR 1:2012 AND COR 2:2013)
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频