Are there specific specifications or detailed calibration methods for the calibration of high strength bolts and wrenches before and after the shift?
Class before and after class calibration is to control the torque value, such as today's first screw, pre class calibration value of 450N.m, then class calibration should be 450N.m.Specific torque values must be calculated.
First use the electric wrench and then check with the torque wrench to see if the torque value is up to the standard.
General electric wrench relatively save strength, but the construction should strictly control the torque value.
