Tunnel hose with class B flame retardant PVC for pipe shaft, fabric soft, high strength tear resistance to acid and alkali, corrosion resistance, cold resistance, waterproof, flame retardant, connect freedom, small and lightly, easy to carry .

Environmental protection products is non-toxic, no smell, no dust, no fiber. seamless tube , with no air leakage, wear-resistant, low wind resistance, compressive strength, etc.

Temperature: -15 ℃ to +80 ℃ (cold resistance or high temperature hose optional)

Flexible duct diameter Ф4〃 -Ф59 〃（100mm─1500mm） usual length 5m or 10m, can be available.

The cloth thickness 0.4mm-0.65mm, the main color is orange. Other colors: gray, white, blue, red, black, green, etc.

tunnel and mining duct is suitable for high power strong ventilation fan which has been used in digging and coal mines with high gas content. In order to improve the ventilation facilities and ensure the safety of production. It is one of the most effective measurements to reduce manufacturing cost and enhance work efficiency.