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What are the classifications of high strength bolts?

- Nov 13, 2017 -

What is the classification of high strength bolts? The following are classified according to the stress of his condition and construction situation, so that we can understand more detailed classification of high strength bolt.

High strength bolts according to the stress state is divided into: friction type and bearing type

Is actually the design calculation methods are different, the friction type high strength bolt with interlayer sliding plate as the limit state of bearing capacity; bearing type high strength bolt with interlayer sliding plate as the serviceability limit state, and to connect the damage as the limit state of bearing capacity.

High strength bolts according to the construction process is divided into: torshear type high strength bolt and six angle high-strength bolts

High strength grade six angle high-strength bolts belong to ordinary screw, and torshear type high strength bolt is improved while the big six angle bolts, in order to better construction. The construction of high strength bolts must first screw after final screw, high strength bolt with tighteningtightening impact type electric wrench or adjustable torque electric wrench and screw end bolts; there are strict requirements, the final twist of torshear type high strength bolt must use torshear type electric wrench, screw end torque type high strength bolt must use torque type electric wrench.


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