
Stud Ends And Ports Of Fittings, Valves And Plug Screws - Part 21: Dimensions For Pipe Thread According To Din En Iso 228-1 And O-ring Sealing
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
Stud Ends And Ports Of Fittings, Valves And Plug Screws - Part 21: Dimensions For Pipe Thread According To Din En Iso 228-1 And O-ring Sealing
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻