PVC Pipes: Material: PVC Standard: GB, ISO Advantages: High flow capacity, endurable, nontoxic,pressure-proof 1. PVC-U is a rigid unplasticized material with good surface rigidity and tensile resistance, as well as high compressive rating and pipe safety factor2. PVC-U has good aging resistance with normal lifetime up to 50 years3. good chemical resistance including acids, alkalis, salts ...