... for drainage,pvc irrigating pipe , pvc chemical pipe, pvc watersupply pipe,pvc electricity pipe pvc pipe and fittings Classification:1.UPVC ... drainage pipe1. Uniform wall thickness,stable sizes2. Smooth pipe wall, low liquid resistance, high transfer efficiency3. No ... incrustation, good beautification effects4. Easy to install, maintenance and repair, good seal effect5. light, durable (30~50 years ...