
Thread rolling screws for ISO metric thread Part 1: Technical delivery conditions for case hardened and tempered screws
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
Thread rolling screws for ISO metric thread Part 1: Technical delivery conditions for case hardened and tempered screws
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻