... Capacity,Corrosion Resistant,Lower Installation Costs,Longevity,Environment-friendly pvc double wall spiral pipe -- plain end Name Dn (mm)En (mm ... )UnitLengthPvc Pipe (plain end) 322.0M4M, 6M or as ... Air Tightness Test: No Leakage Applications: Soil and waste discharge pipelines (low and high temperature) inside buildings.rainwater pipelines inside ...