Friction-type high strength bolts: suitable for steel frame beam, column connection, real abdomen Liang Lian connection, heavy crane girder connected to industrial plant, braking system and important structure of bearing dynamic loads.
Compressive strength bolts: can be used to allow a small number of sliding static structures or indirectly subjected to dynamic loads of the shear connections in the components.
Tensile strength bolts: When the bolt is pulled, the fatigue strength is lower, its bearing capacity is not easy to exceed 0.6P (p for the permissible axial force of the bolt), so it is only applicable to the Yu Jing load, such as the flange butt of the pressed rod and the T-joints.