High-strength bolts apply pre-tension and transmit external force by friction
High-strength bolts are high-strength bolts and are a standard part. High-strength bolts are mainly used in steel structure engineering to connect the joints of steel structural steel plates. A very important feature of high-strength bolts is that the construction of single-use high-strength bolts must be tightened immediately after initial tightening. The first-time high-strength bolts need to use impact-type electric wrenches or torque-regulated electric wrenches; and the final high-strength bolts are strict. It is required that the torsion-shear type electric wrench must be used for the final tight-twist type high-strength bolt. The torque-type electric wrench must be used for the final tightening type high-strength bolt. The construction of the high-strength bolt must be tightened first and then tightened. Electric wrench or torque adjustable electric wrench; and the final tight high-strength bolt has strict requirements. The torsion-shear type electric wrench must be used for t...