When installing plastic pipes, the influence of ambient temperature on the installation quality should be considered. Generally, when the temperature is higher than 40℃ or lower than 0℃, installation is not suitable; due to the large linear expansion coefficient of plastic pipes, it is generally about 8 times that of steel. Thermal compensation should be considered. Generally, spontaneous combustion compensation is the main method. Teflon corrugated expansion joints or rubber compensators can also be used for compensation; for overhead pipelines, pipe supports should be used. Pipe supports can be angle steel or cross-sectioned steel pipes. Material, so that the pipeline can be freely expanded and contracted on the trusteeship; for buried pipelines, the buried depth is generally less than 0.7 meters, and should not be affected by ground traffic. The trenches dug should be flat, with stones on the bottom and both sides of the trench. , Broken bricks, glass and other hard objects are clear and clean. Use high-quality backfill soil for the re-soil, and compact the soil around the pipe without mixing it with gravel.
