... u-pvc rigid drainage/u-pvc water-proof pipe 2,Material :U-PVC 3,ISO,IEC,GB Standard 5,Size:16mm-200mm Discription:PVC drainage ... .1-2006,ISO4422-1996 standard,GB StandardAdvantage:A. PVC-U is a rigid unplasticized material with good surface rigidity and tensile resistance ... cen be adopted, easy to handle and install.Photos White rigid pvc water perforated plastic U-PVC hdpe perforated drainage pipe