功能：初紧扭剪型高强螺栓、初紧大六角高强螺栓、终紧大六角高强螺栓
Function: initial tightening torsional shear high-strength bolt, initial tightening large hexagon high-strength bolt, final tightening large hexagon high-strength bolt
应用：高强螺栓连接是钢结构连接的主要连接形式之一，具有受力性能好、连接强度高、耐疲劳、抗震性能好、安装快速等优点，被广泛利用。
Application: high strength bolt connection is one of the main connection forms of steel structure connection. It has the advantages of good mechanical performance, high connection strength, fatigue resistance, good seismic performance, fast installation and so on.
越来越多的钢结构安装都需要大六角高强螺栓，终紧紧固大六角高强螺栓必须用定扭矩电动扳手。
More and more steel structures need large hexagon high-strength bolts for installation. Constant torque electric wrench must be used for final tightening of large hexagon high-strength bolts.
10.9级大六角高强度螺栓必须先初紧，后终紧。初紧可以选择手动扳手、冲击扳手、定扭矩扳手，而终紧必须选择使用定扭矩电动扳手。
Grade 10.9 large hexagon high-strength bolts must be tightened initially and then finally. Manual wrench, impact wrench and constant torque wrench can be selected for initial tightening, while constant torque electric wrench must be selected for final tightening.
初紧扭矩值是大扭矩值的50%-60%都行，而终紧扭矩值必须要严格精确，所以必须使用可以设定扭矩值的扭矩扳手。
The initial tightening torque value is 50% - 60% of the large torque value, while the final tightening torque value must be strict and accurate, so a torque wrench that can set the torque value must be used.
定扭矩电动扳手是钢结构安装高强螺栓施工专用电动扳手，专门紧固大六角高强螺栓。
Constant torque electric wrench is a special electric wrench for steel structure installation and high-strength bolt construction, which is specially used to fasten large hexagon high-strength bolts.
产品广泛应用于电力建设、高层建筑、桥梁建设、化工、厂房、冶金、铁路施工等钢结构安装工程。
Products are widely used in power construction, high-rise buildings, bridge construction, chemical industry, plant, metallurgy, railway construction and other steel structure installation projects.
