
High-strength Structural Bolting Assemblies For Preloading - Part 7: System Hr - Countersunk Head Bolt And Nut Assemblies
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
High-strength Structural Bolting Assemblies For Preloading - Part 7: System Hr - Countersunk Head Bolt And Nut Assemblies
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻