PVC plastic pipe stiffness than the cast iron pipe, plus the expansion coefficient, therefore we must choose suitable support.
On the vertical pipe PVC pipe of each layer should be a firm fixation, fixation can control for PVC piping tract expansion direction, sharing riser weight, also make tube and a horizontal door pipe connected with the tube head from an over pressurized upright, caused by pipeline leakage, and vertical tube bottom should also supporting pier or hanger fixing measures.
In outdoor construction, PVC pipe is particularly vulnerable to damage. In the PVC and outdoor integrated pipeline crossing construction, artificial, machinery and equipment to cause varying degrees of damage to the, even pure powder, fracture caused by line impassability.
When the pipe is filled, the PVC pipe is often damaged due to the pressure of the pipe section overhead or larger hard object. Therefore, the buried PVC pipe requires a solid base after the tube, the tube below the 100mm, the top of the pipe 300mm backfill sand, and the total depth of not less than 900mm
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