How is steel structure constructed?

The construction of steel structural bolts must be initially tightened and then finally tightened. The initial tightening of steel structural bolts requires the use of an impact type electric wrench or a torque adjustable electric wrench; And there are strict requirements for final tightening of steel structural bolts. Final tightening of torsion shear type steel structural bolts must use torsion shear type electric wrenches, and final tightening of torque type steel structural bolts must use torque type electric wrenches.

The large hexagonal steel structural bolt consists of one bolt, one nut, and two washers.

Twist shear steel structural bolts consist of one bolt, one nut, and one washer.