
Pren 10305-5 - Steel Tubes For Precision Applications - Technical Delivery Conditions - Part 5: Welded And Cold Sized Square And Rectangular Tubes
出版:British Standards Institution

专家解读视频
Pren 10305-5 - Steel Tubes For Precision Applications - Technical Delivery Conditions - Part 5: Welded And Cold Sized Square And Rectangular Tubes
出版:British Standards Institution
专家解读视频