shine plastic: P.E behaviour and purpose

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	P.E behaviour and purpose
	P.E can devided into high pressure, medium pressure and low pressure . high pressure polyethylene texture is soft , low pressure polyethylene texture is strong and good texture in tolerance to cold,even can keep soft in -70 degree.it is good in chemical stability,it can resistance acid base and organic flux.it also has the special Electrical performance and excellent corrosive resistance.but the defect is not very strong in mechanics,also the temperature is not very high in thermal collapse. （≤80℃）,so it can not bear the heavy weight. Polyethylene is the good material to process corrosive resistance lining, tubing, valve, bushing ,which can replace copper and stainless steel.