預負載用高強度結構螺栓連接副,第4部分:HV系統 - 六角螺栓
High-Strength Structural Bolting Assemblies for Preloading - Part 4: System HV - Hexagon Bolts
預負載用高強度結構螺栓連接副,第4部分:HV系統 - 六角螺栓
High-Strength Structural Bolting Assemblies for Preloading - Part 4: System HV - Hexagon Bolts