钢结构用高强度大六角螺栓
GB /T 1228-91( 代替 GB1228-84 )
High strength bolts with large hexagon head for steel structures
钢结构用高强度大六角头螺栓
GB /T 3632-1995( 代替 GB3632-83 )
Sets of torshear tye high strength bolt hexagon nut and lain washer for steel structures
钢结构用扭剪型高强度螺栓连接副
常用标准
GB /T 1230-91( 代替 GB1230-84 )
High strength lain washers for steel structures
钢结构用高强度垫圈