
Pipe Classes For Process Plants - Part 6: Technical Delivery Conditions For Tube Parts - Flanges For Machine Prefabrication
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
Pipe Classes For Process Plants - Part 6: Technical Delivery Conditions For Tube Parts - Flanges For Machine Prefabrication
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻