Commonly Used Electric Wrenches For Bridges

Recently, customers often inquire about the types of electric wrenches dedicated to bridges?

According to the customer's description, the commonly used bolt types in bridge construction are M20, M24, M30, etc., so what are the commonly used wrenches?

In bridge construction, tightening bolts have strict requirements on the torque value. Due to the technical requirements of bridges, many high-strength bolts used in bridges must be carried out in two steps. First, the initial tightening is performed: the initial tightening is tightened to 60% to 80% of the standard axial force of the bolt (ie, the design pretension), and the torque value of the initial tightening must not be Less than 30% of the final tightening torque value; and then the final tightening: in order to make all bolts in the bolt group evenly stressed, the initial tightening and final tightening should be carried out in a certain order, so it is necessary to use a digital display type bridge special electric wrench .

Shandong Hanpu's bridge special electric wrenches PN-7 and TN-12 are the initial and final tightening wrenches specially used to fasten high-strength bolts. The specific parameters are as follows:

We also have any other hot sale models for tightening bolts, welcome your inquiry！

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