钢结构栓连接用高强度大六角螺母
High-Strength Hexagon Nuts With Large Widths Across Flats For Structural Steel Bolting
钢结构栓连接用高强度大六角螺母
High-strength hexagon nuts with large widths across flats for structural steel bolting
预负载用高强度结构螺栓连接副,第4部分:HV系统 - 六角螺母
High-strength Structural Bolting Assemblies for Preloading - Part 4: System HV - Hexagon nuts