PVC－U Pipes for Buried Drainage and Sewerage Systems ◆Low fluid resistance non-block,high transportation efficiency ◆High compressive resistance ◆Light weight,convenient installation and maintenance,low construction cost. ◆Endurance,50 years life in normal use. ◆Discharge of various sanitary waste and sewage inside and outside the construction. ◆Municipal utilities drainage works ◆Industrial ventilation piping. ◆Telecommunication wire and cable jacket. Density ≤1.5g/cm3 Vicat softening temperature ≥79℃ Lognitudinal reversion rate ≤5% 20℃ TIR Falling weight impact test ≤10% Cycle inflexibility S25 ≥2kPa S20 ≥4kPa S16.7 ≥8kPa Loromethane immersion test No change on surface Connection seal test No leakage GB/T10002.3-1996 ln (mm) Nominal outside diameter Nominal wall thickness kPa Rigidity grade 2 4 8 110 　 3.2 3.2 125 3.2 3.2 3.7 160 3.2 4.0 4.7 200 3.9 4.9 5.9 250 4.9 6.2 7.3 315 6.2 7.7 9.2 400 7.8 9.8 11.7 500 9.8 12.3 14.6