Fire Resistant Ventilation Duct

We are offering fire resistant ventilation duct.
With class b flame retardant pvc、high strength and tear resistance of acid and alkali resistance, corrosion resistance, cold tolerance.
Dense flight lead, increase overstriking wire, take out and air supply, high negative pressure.
Temperature: -15 ℃ to +80 ℃ (cold resistance or high temperature hose optional)
with ventilation equipment widely used in: repairing, shipbuilding engineering, tunnels, mining ventilation equipment, pumping gas, room, municipal pipeline engineering, basement, underground work dust removal and transportation of fresh air, take out car exhaust; airport boarding supply or air exhaust, and fire smoke, and other heavy work environment of air supply and exhaust, addition to the use of smoke and dust.