
Welded Steel Tubes For Pressure Purposes - Technical Delivery Conditions - Part 1: Non-alloy Steels With Specified Room Temperature Properties
出版:Comite Europeen de Normalisation

专家解读视频
Welded Steel Tubes For Pressure Purposes - Technical Delivery Conditions - Part 1: Non-alloy Steels With Specified Room Temperature Properties
出版:Comite Europeen de Normalisation
专家解读视频