→3000N.m high strength bolt hexagon nut and plain washer torsion testing machine, used to determine pretightening force, tightening axial force, yield tightening axial force, yield clamping force, limit clamping force, prove load, proof load, break load, limit tightening torque, torque coefficient, torsion angle for M39-M72 large hexagon bolt.
→Equipped with photograph system to record bolt torsion test process, image acquisition system and software control system in the real time.
→GB/T3632-2008 Sets of torshear type high strength bolt hexagon nut and plain washer for steel structure
→GB/T1231-2006 Specifications of high strength bolts with large hexagon head, large hexagon nuts, plain washer for steel structure
For details, please check the following links: