Pvc duct pipe made from Nylon cloth coated PVC, reinforced 65# carbon steel wire, Size from 50 to 1500mm Pvc duct pipe made from Nylon cloth coated PVC, reinforced steel wire, Size from 50 to 1500mm.Used as heating, cooling, Venlitation, Air condition, Exhaust and Dust Exhraction.Working temperature: -20 to 100 degree CWind pressure: 5 BarStandand Length is 5m, 10m, can make 1m to 100m