1, HDPE pipes must be under pressure, usually using large molecular weight, good mechanical properties of PE resins, such as HDPE resin, strength that of ordinary polyethylene pipes (PE pipes) 9 times;
2, in the all engineering plastics, the wear resistance of HDPE plastic Crown, high molecular weight material, the more wear-resistant, even more than many metals (such as carbon steel, stainless steel, bronze, etc), General PE does not have this feature;
3, HDPE pipes are traditional steel pipe, PVC tubes for drinking water products, General PE tubes can't.