
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)

專家解讀視頻
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)
專家解讀視頻