钢结构用扭剪型高强度螺栓连接副
Sets of torshear type high strength bolt hexagon nut andplain washer for steel structures
Sets of torshear type high strength bolt hexagon nut andplain washer for steel structures
Metallic materials-Vickers hardness test-nPart 1:Test method
Mechanical properties of fasteners-Bolts ,screws and studs
General purpose metric screw threads-Tolerances
Specifications of high strength bolts with large hexagon headlarge hexagon nuts,plain washers for steel structures
Bonded abrasive products-Hardness grade measurement
Bonded abrasive products-Permissible unbalances of grinding wheels asdelivered--Testing
Bonded abrasive products-Test method of appearance, dimensions andgeometrical tolerancing
Rotation test of grinding wheel strength
Compacted strand ropes