1.Good mechanical properties: the pipe has good hydraulic strength, external pressure strength and impact strength.

2.Small flow resistance: the inner wall of pvc-u pipe is smooth with small flow resistance and the roughness rate is 0.008 ~ 0.009. The water carrying capacity is 25% higher than that of cast iron pipe and 50% higher than that of concrete pipe.

3.Corrosion resistance, long service life: pvc-u pipe has good corrosion resistance, not affected by moisture and soil acidity, not conductive, not sensitive to dielectric corrosion, pipe laying without any corrosion treatment, service life of more than 50 years.