
SPECIFICATION AND QUALIFICATION OF WELDING PROCEDURES FOR METALLIC MATERIALS - WELDING PROCEDURE SPECIFICATION - PART 1: ARC WELDING
出版:German Institute for Standardisation (Deutsches Institut für Normung)

专家解读视频
SPECIFICATION AND QUALIFICATION OF WELDING PROCEDURES FOR METALLIC MATERIALS - WELDING PROCEDURE SPECIFICATION - PART 1: ARC WELDING
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频