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First, the new plastic pipe water resistance is small, the new plastic pipe than other pipes, the inner wall is more smooth, not easy to scale, so the friction between the water flow and the pipe is small, so the resistance of the water flow is small, more suitable for water supply and drainage projects. Secondly, the new plastic pipe is lighter than other pipes, and the connection is easy to be installed in various ways, which can accept greater strength of water flow. Third, the new plastic pipe is cheaper than other pipes, which can save more cost. Fourth, the new plastic pipe is more environmentally friendly, stronger corrosion resistance. Metal material long-term under the action of water flow will be oxidised by the oxides in the water, the water quality will generally be contaminated, the pipeline will be gradually corroded and become loose, and ultimately lose efficacy. The plastic pipe is not easy to corrode, so it will not cause water pollution.

Application of more plastic pipes are as follows: (1) rigid polyvinyl chloride pipe (UPVC) is the most widely used plastic pipes in water supply and drainage pipes, UPVC corrosion resistance, good flexibility, hygiene and non-toxicity, mainly used for municipal water supply and drainage pipes as well as other building water supply and drainage pipes; (2) aluminium-plastic composite pipe (PAP) is a composite pipe, in the middle of the aluminium pipe playing a role as a skeleton, inside and outside the polyethylene (PE) plastic, PAP, PAP, PAP is a composite pipe, in the middle of the aluminium pipe, inside and outside the polyethylene (PE) plastic, PAP, PAP, PAP, PAP. PE plastic, PAP has the advantages of saving energy, improving the home environment, reducing the weight of the building, convenient construction, etc., mainly used in indoor hot and cold water pipelines; (3) glass fiber reinforced plastic with sand pipe (RPM) is a flexible non-metallic composite pipe, mainly made of resin, glass fibers, quartz sand curing and become, has the advantages of lightweight, high strength, corrosion resistance, etc., mainly used in large-calibre municipal water supply and drainage pipelines as well as Sewage engineering; (4) polyethylene (PE) pipe can be divided into high, medium and low density polyethylene pipe according to the density, low-density PE flexibility, impact resistance is superior, mainly used for agricultural drainage and irrigation, high and medium-density PE is mainly used for indoor and outdoor water supply pipelines; (5) crosslinked polyethylene pipe (PE-X) smaller calibre, mostly used for indoor hot and cold water supply; (6) acrylonitrile-butadiene-styrene (ABS) Plastic pipe corrosion resistance, high temperature resistance, and a wide range of temperatures, high price, mainly used for anti-corrosion pipeline; (7) steel-plastic composite pipe (SP) both the mechanical strength of the metal pipe and plastic pipe corrosion resistance, mainly used in water supply pipelines.