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Chengdu Steel Structure Engineering Company controls a new place

Time：2020-07-08

Overview of the installation quality control of large hexagonal head bolts by Chengdu Steel Structure Engineering Company:

1. The torque coefficient of the large hexagonal head bolt and the fastening shaft force of the torsion-shear high-strength bolt must be tested.

2. The anti-slip coefficient of the friction surface of the bolted connection must be tested.

3. High-strength bolts must be carried out in the order of initial tightening and final tightening, and the exposed wire buckle is 2-3 buckles.

4. The contact surface of

frictional high-strength bolt connection should be flat, 75% of the surface is tight, the maximum gap of the edge is 0.8mm, when the gap between the contact surface is large, the higher side should be ground into a 1:10 slope, and the grinding direction should be perpendicular to the force direction.

The above four points are a simple summary of our Chengdu steel structure engineering company, and everyone should communicate with us.

Keywords： Chengdu Steel Structure Engineering Company controls a new place

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Chengdu Steel Structure Engineering Company controls a new place

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