预负载用高强度结构螺栓连接副,第4部分:HV系统 - 六角螺栓
High-Strength Structural Bolting Assemblies for Preloading - Part 4: System HV - Hexagon Bolts
预负载用高强度结构螺栓连接副,第4部分:HV系统 - 六角螺栓
High-strength Structural Bolting Assemblies for Preloading - Part 4: System HV - Hexagon bolts