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The actual operation of the three kinds of material mixed com., after processing and make the steel pipe anticorrosion layer is firmly combined to form excellent. The processing method is generally divided winding and - coated type two. For 3PE anti-corrosion uses coverage is very broad, which is suitable for coal mine water supply and drainage, underground shotcrete, positive and negative pressure ventilation, drainage, fire sprinkler pipe network. Process water, thermal power plant waste water pipeline. With superior applicability for water supply pipeline fire sprinkler, sprinkler system. Electric power, communication, highway and other cable protective sleeve. Application of high-rise building water supply, heating, water supply, gas supply engineering, underground water pipeline. Process piping the oil pipeline, chemical pharmaceutical, printing and dyeing industries to transport corrosive medium. Sewage discharge pipe, sewage pipe and anticorrosion engineering of biological pool. Agricultural irrigation pipe, deep tube, drainage pipe network and so on, can be said to 3PE anti-corrosion steel pipe is essential in the current construction, and believe that through scientific and technological extension, the future still more brilliant achievements.