The trench excavation of conventional pipeline installa […]
The trench excavation of conventional pipeline installations only requires that the pipeline be placed in the trench and can be sealed. When the original soil layer is not loosened, it is not necessary to pressurize the cushion.
General PVC pipe branch fork can use tee or vertical stopcock split. During the construction, a saddle-shaped fitting half a two-in-three tees can be added and clamped with a U-bolt so that the wall of the tube is thickened, and then the teeth are drilled directly on the top and then the plastic parts are externally threaded. The test shows that after this construction, the pressure test acceptance after construction can fully meet the requirements of the specification.
In addition, in the position where the water flow in the pipe generates thrust, such as the elbow, the three-way pipe, and the end of the pipe, the thrust piers should be provided to withstand the thrust of the water flow.
As a new type of non-metallic pipe, the PVC pipe can not detect its specific location by using the existing metal pipe detection equipment. However, if the pipeline is buried in the installation time, a wire can be buried on the pipe to solve this problem.