Introduction of steel plastic composite pipe: 　　The steel plastic composite pipe, which mainly used for water supply and drainage, base pipe with inner and outer plastic coated according to different corrosion requirements, by a special process to make plastic layer and the inner and outer wall of steel sintering in high temperature. Technical Parameters of Steel-plastic composite: 　　　1, High wear resistance: molecular weight of UHMW-PE pipe up to 250 million or more, wear resistance is 4 --- 6 times of the ordinary steel pipe 　　　2, High impact resistance: according to GB1843 standard Izod impact test without damage 　　　3, Corrosion resistance: UHMW-PE pipe is saturated molecules structure, can be resistant to erosion of potent chemical substances 　　　4, Good self-lubricating: UHMW-PE pipe containing a waxy substance, the friction coefficient is only 0.219MN / m 　　　5, The unique low temperature resistance: In the working environment temperature -269 ℃ -80 ℃, UHMW-PE pipe’s impact resistance, wear resistance unchanged 　　　6, Difficult to scale:  UHMW-PE pipe is low friction coefficient, pipe finish, with good surface of non- adhesion 　　　7, Long Life: UHMW-PE pipe fatigue strength is more than 50 million times, more than 2 times of PE100 　　　8, Easy installation: UHMW-PE pipe use flange connection, quick and easy, greatly reducing the cost of installing the pipeline construction.