A fixed torque electric wrench is a type of electric wrench that can automatically control torque. It is suitable for bridge structures, large steel towers, steel structure factories, metallurgical equipment frames, large crane frames, mine steel frames and other engineering projects that require high-strength bolt connections, as well as large diesel engines, power generation equipment, chemical equipment, etc. The bolts that require constant clamping force connections can also be tightened with a fixed torque wrench.