Electric wrench is a tool for tightening bolts, mainly used for tightening pipeline flange bolts and connecting high-strength bolts in steel structures. The initial tightening of high-strength bolts with torsion shear can be achieved using an impact electric wrench or a fixed torque electric wrench, while the final tightening must be achieved using an electric torsion shear wrench. Both the initial and final tightening of large hexagonal high-strength bolts must be achieved using a fixed torque electric wrench.

电动扭剪扳手和定扭矩电动扳手都属于电动扳手的一种。其中，电动扭剪扳手主要用于扭剪型高强螺栓的终紧，其使用方法是对准螺栓扳动电源开关，直到扭剪型高强度螺栓的梅花头打断为止；定扭矩电动扳手可用于高强螺栓的初紧和终紧，它的使用是先调节扭矩，再紧固螺栓。

Both electric shear wrenches and fixed torque electric wrenches belong to the category of electric wrenches. Among them, the electric torsion wrench is mainly used for the final tightening of torsion shear high-strength bolts. Its use method is to align the bolt and pull the power switch until the plum blossom head of the torsion shear high-strength bolt is broken; A fixed torque electric wrench can be used for the initial and final tightening of high-strength bolts. Its use is to adjust the torque first and then tighten the bolts.

定扭矩电动扳手也称为力矩扳手，是一种电动扳手，它的主要特点是可以设置扭矩，并且可以调节扭矩，主要用于钢结构安装行业，专门从事钢结构高强度螺栓的安装。

Fixed torque electric wrench, also known as torque wrench, is a type of electric wrench that can set and adjust torque. It is mainly used in the steel structure installation industry and specializes in the installation of high-strength bolts in steel structures.

电动扭矩扳手可以称之为电动精控扭矩扳手，区别就主要体现在“精控”二字上，通过精控程序控制，结合了快速预紧和反力臂迅速定位而精密设计的高速齿轮变速箱，让扭矩的精确度可以达到±3-±5%。对于扭矩精确度要求高、速度要求快的使用客户，可以替代液压扳手作为螺栓拆装工具。

Electric torque wrenches can be referred to as electric precision control torque wrenches, with the main difference reflected in the word "precision control". Through precision control program control, combined with rapid pre tightening and rapid positioning of the reaction arm, a high-speed gear transmission is designed with precision, allowing the accuracy of torque to reach ± 3- ± 5%. For customers who require high torque accuracy and fast speed, they can replace hydraulic wrenches as bolt disassembly tools.

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