... have a good quality. PVC Pipes: Material: PVC Standard: GB, ISO Advantages: High flow capacity, endurable, nontoxic,pressure-proof PVC pipes: Thickness* Dia.=mm ... 5meters, or 6 meters long per Main charactricstics 1. PVC-U is a rigid unplasticized material with good surface rigidity ... Low coefficient of linear expansion of , thermal expansion of pvc-u pipe is less than polyolefin by , low thermal ...