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