
Pipe Threads Where Pressure-tight Joints Are Not Made On The Threads - Part 1: Dimensions, Tolerances And Designation - Limits Of Size
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
Pipe Threads Where Pressure-tight Joints Are Not Made On The Threads - Part 1: Dimensions, Tolerances And Designation - Limits Of Size
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻