PE is polyethylene. PE has a wide range of uses, and is divided into high density, low density and linear PE, the most common daily application is to make a variety of plastic film and plastic cloth. PE pipe has medium density polyethylene pipe and high density polyethylene pipe. According to the wall thickness, they are divided into SDR11 and SDR17.6 series. The former is suitable for conveying gaseous artificial gas, natural gas, liquefied petroleum gas, and the latter is mainly used for conveying natural gas. Compared with the steel pipe, the construction process is simple, there is a certain degree of flexibility, and more importantly, it is not used as anti-corrosion treatment, which will save a lot of processes. Disadvantages on the instrumentation is not as good as steel pipe, the construction of special attention to the safety of thermal heating spacing, and can not be exposed to the air in the sun, and sensitive to chemicals to prevent the leakage of sewage pipeline caused by injury. PVC is polyvinyl chloride, a plastic product synthesized from 43% oil and 57% salt. Compared to other types of plastic products, PVC uses raw materials more efficiently and reduces oil consumption. At the same time, PVC manufacturing has low energy consumption. And in the late stage of the use of PVC products.
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