HDPE pipe material is non-toxic, non-corrosive, non-scaling, can effectively improve the water quality of the pipe network. HDPE pipe’s weight per unit length only one-eighth the weight of steel, making the handling, transportation, installation more convenient, and can reduce labor intensity, it also has strong aging resistance, not easy to aging in 50 years. Whether on the ground erection, or can be buried underground. When installed either welded or flanged connections can be safe, reliable, convenient, no corrosion, saving labor, which fully reflects the superiority "energy, environmental, economic and efficient" of ultra high molecular weight polyethylene pipe.