Sewers, ultra high molecular weight polyethylene pipe. The impact strength of the sewage pipes, low temperature resistance at the head of the existing plastic pipe, is far superior to PVC-U pipes, PP-R pipe, PB pipe, ABS pipe, etc., help to resist accidental impact and cold damage, and within the anti- compressive strength, resistance to environmental stress cracking resistance with crosslinked PE pipe, aluminum composite pipe comparable, and therefore safe, reliable, long life; because it can absorb impact energy, silencer when drainage is better than solid wall PVC-U pipes ; when used as a buried pipe, good flexibility, fluctuates formation [e.g. earthquake] not easily be destroyed; its use temperature is generally below 100 ℃, but because of very high molecular weight, molecular chain movement difficult, its thermal deformation temperature than normal PE is high, if there is no stress, lower than the melting point of 150-200 ℃ in the shape of the article is not changed, and thermal properties of crosslinked PE similar. Therefore, the construction of water pipes, drains, sewers, exhaust pipes, gas pipes, water pipes can be employed ultra high molecular weight polyethylene pipe. For example, indoor and outdoor cast iron pipes salinization in the workshop, mostly brine flow through the pipeline, or contain acid, alkali wastewater, groundwater coupled with erosion, life is usually only 3-4a; the coastal climate is humid, with a large number of halogen-containing humid air, making the residential of cast iron pipes rust stains. Therefore, corrosion resistance of sewers, ultra high molecular weight polyethylene pipe come in handy. It is predicted that in 2000 China's plastic pipe to the demand of 10 million -15 million t. By 2010, the country's new residential indoor drains 80% of the plastic pipe, basically eliminated the traditional cast iron pipe; indoor plumbing with flexible plastic tube proportion will reach 30%. This provides the conditions for promote sewers, ultra high molecular weight polyethylene pipe applications. Ultra high molecular weight polyethylene pipe applications: Metallurgical Mines: slurry transportation, backfill grouting; sewage pipes Power: fly ash transport; sewage pipeline dredge pumping sand: lake dredging slurry transportation, pumping sand pumping sand tube; sewage pipes oil, natural gas transportation; outfall pipe UHMWPE Projects: China National Gold Group Gold Mining tailings southwest Guizhou dragon pipeline project (1500m Φ159) Xianning high-strength Manganese Limited (1000m Φ159 ultra sediment tube) Nanyang sand stone factory flushing pipe project (500 meters Φ426 ultra sediment tube) Qinglong Manchu Autonomous County, Qinhuangdao Railway Co. Ka billion (1300 m Φ325)