
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)

专家解读视频
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)
专家解读视频