PVC pipe has strong corrosion resistance, easy bonding, low price and hard texture. However, due to the leakage of PVC monomer and additives, it is only applicable to the water supply system where the delivery temperature is not more than 45 ℃. Plastic pipes are used for drainage, waste water, chemicals, heating and cooling liquids, food, ultra pure liquids, mud, gas, compressed air and vacuum systems.Performance test: curing time, shrinkage, splitting strength, tensile strength, peel strength, thermal stability, shelf life, release of harmful substances.