... Standard 5,Size:16mm-200mm Discription:PVC drainage pipe,water-proof pipe,50mm GB drainage pipe,white drainage pipe1,Size:Any size are available, ... of linear expansion of , thermal expansion of pvc-u pipe is less than polyolefin by , low thermal conductivity ... pipe and fittings cen be adopted, easy to handle and install.Photos White rigid pvc water perforated plastic U-PVC hdpe perforated drainage pipe ...