PVC flexible duct Flexible duct is made of fire-retardant PVC material, spring steel ring , rope and metal ring , can be used for extracting dust and supply fresh air in equipment room, basement, tunnel , mining and shipbuilding engineering. The features of products: unable to endure high temperature, acid and alkali-resistance, small ventilation resistance, small ventilation noise, easy installation, high leak tightness.,1)Material: PVC tarpaulin 2)Thickness: 0.35mm~0.60mm 3)Calibre: PE bag and carton. 4) Packing: PE bag and carton. 5) MOQ: 10 pieces per specification

PVC flexible duct