
En 10217-3 Welded Steel Tubes For Pressure Purposes - Technical Delivery Conditions - Part 3: Non-alloy And Alloy Fine Grain Steel Tubes
出版:British Standards Institution

专家解读视频
En 10217-3 Welded Steel Tubes For Pressure Purposes - Technical Delivery Conditions - Part 3: Non-alloy And Alloy Fine Grain Steel Tubes
出版:British Standards Institution
专家解读视频