Feb. 20, 2017
Selection of highway corrugated steel pipe must follow the application, the principle of safety and economy.
1, culvert assembly completed, with a constant torque electric wrench, according to preload torque tighten all bolts fastening bolt bottom marked with red paint.
2, in order to ensure the requirements of the bolt torque, with the fixed torque wrench, the pre tightening torque for sampling test.
3, to meet the requirements for preload torque of corrugated steel culvert ring joint, used epoxy resin mortar filling, with anti corrugation plate junction leakage.
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