PVC flexible ventilation ducting vent tube for Mine and Tunnel Uses: Suitable for suction and discharge of solid (dust, fiber) and gas (water vapor, smoke), etc. It is an ideal ventilation hose for factories, mines and agriculture. PVC flexible ventilation ducting vent tube for Mine and Tunnel Mine and Tunnel Ventilation Tube material Must be flame-retardant, tear-resistant, wear-resistant, strong in tension, good in toughness, and able to withstand a certain pressure. At present, most of the market choose knife scraper cloth and coated cloth. The blade cloth� Flexible Mining Ventilation Fabric� is made of high-quality plastic coated material, which is 100% waterproof and wear-resistant. Its base fabric is woven with industrial filaments, which has stronger tensile strength, more tear resistance, more wear resistance, and better use. The coated cloth series canvas tarpaulin, of course,� Flexible ventilation ducting� also has many functions such as windproof and waterproof, breathable, strong tensile and tear resistance, which is worth recommending. Flexible Ventilation Ducting for Tunnel� Uses: Suitable for suction and discharge of solid (dust, fiber) and gas (water vapor, smoke), etc. It is an ideal ventilation hose for factories, mines and agriculture. Forced-air ventilating ducts tarpaulin material� Performance characteristics: beautiful appearance, light weight, small bending radius, acid and alkali resistance, chemical resistance, bending resistance, good stretch and rebound ability.