Pipes mainly include electrical bushings, drainpipes, rain pipes, cable tubes and spiral pipes with the specification range of φ16-φ250;pvc pipe,bushing. Electrical Bushing: -15°C seriesDemmThickness (heavy-sized pipe) Thickness (medium-sized pipe) Thickness (light-sized pipe) -5°C seriesThickness (medium-sized pipe) 161.71.41.11.2201.81.51.21.3251.91.71.31.4322.52.01.61.8402.52.01.82.0503.02.32.0633.22.3