
Pren 10297-1 - Seamless Steel Tubes For Mechanical And Engineering Purposes - Technical Delivery Conditions - Part 1: Non-alloy And Alloy Steel Tubes
出版:British Standards Institution

專家解讀視頻
Pren 10297-1 - Seamless Steel Tubes For Mechanical And Engineering Purposes - Technical Delivery Conditions - Part 1: Non-alloy And Alloy Steel Tubes
出版:British Standards Institution
專家解讀視頻