Mining Use New Style Ventilation Tubes

1.Uses: coal, tunnels, underground local fan machine positive pressure ventilation; 2.Structure and Dimensions: Ventilation tubesvarieties:Ventilation tubes by coated cloth material is divided into rubber coated cloth duct pressure, plastic coated fabrics and rubber coated cloth duct positive pressure air. 1--end loop 2--install wire rings 3--rings 4--opposite side 3.Ventilation tubes performance test reports: Diametermm100meters of air resistance(N·S 2 /M 8 )100meters of air leakage rate(%)300≤1728.0≤5.0400≤410.0≤5.0500≤134.0≤5.0600≤54.0≤5.0800≤13.0≤5.0