
High-strength structural bolting assemblies for preloading - Part 7: System HR - Countersunk head bolt and nut assemblies; German version EN 14399-7:2018
出版:German Institute for Standardisation (Deutsches Institut für Normung)

专家解读视频
High-strength structural bolting assemblies for preloading - Part 7: System HR - Countersunk head bolt and nut assemblies; German version EN 14399-7:2018
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频