1. The standards of the two are different. The standard for PE water supply pipe is GB/T13663-2018 and the standard for PVC water supply pipe is GB/T10002.1-2006. The standards have different requirements for the wall thickness and performance indicators of the two.
2. The strength of PVC is better than that of PE, and the toughness (impact resistance) of PE is better than that of PVC. PE can be used at minus 20 degrees (the internal fluid cannot freeze and remain flowing).
3. PE pipes can be connected by hot melt, which is safe and reliable with high strength; PVC pipes are bonded with adhesives or elastic sealing rings, which is convenient and fast.
4. The cost of PVC water supply pipes is lower than that of PE, and the cost of engineering materials is low.
5. The formula of PVC water supply pipes is more complicated and has more additives. Various additives used for drinking water must be safe and non-toxic. PE pipes have fewer additives and generally have higher hygienic properties than PVC.
6. PE pipes are softer and small-diameter pipes can be made into coils, while PVC pipes are harder and cannot be made into coils.