Application Of Electric Wrench

The electric wrench is mainly used in the steel structure installation industry. It is specially installed with high -strength bolts in steel structures. High -strength bolts are used to connect steel structure contacts. Usually, they appear in the way of bolt groups. High -strength bolts can be divided into two types: twist -cut type and large hexagonal type. The national standard twist -cutting high -strength bolts are four types: M16, M20, M22, and M24. The non -national standard M27 and M30; , M22, M24, M27, M30 and other types. Generally, the tightness of the high -strength bolt must be tightened first and then tightened, and each step requires strict torque requirements. The initial tightness and final tightness of the large hexagonal bolt must be used to use a fixed torque wrench. Therefore, various electric wounds come from the needs of various fasteners.