pvc coated fabric ventilation ducting

Positive ventilation hose has four types: Standard type, Zipper type, Y-Shaped type and Special-Shaped and can be customized for every section (Length from 10 to 200m).
Every two sections are connected with industrial zipper or end coil.
For the purpose of tunnel driving safety, 180℃ horizontal double hook is used for ducting diameter more than 1.5m. 45 ℃ spiral processing technique applied to reinforce strength of anti-pressure and anti-tear.
Quality standard abides by GB/T9900-2008 etc.
Characters：
•Light weight and high strength
•High anti-flaming
•Long term Anti-static electricity
•Low air leakage
•Low air resistance
•Long service life
•Easy installation
•Easy repair
•Safe and Environmental protection
•Great value

Usage：
Positive Ventilation hose is also named as pushing type ventilation hose and widely used in underground project of coal mines, tunnels, subway and so on.

Description：
Working temperature: -20℃ ~ 70 ℃
Diameter: 0.3m、0.4m、0.6m、0.8m、1m、1.2m、1.4m、1.6m、1.8m、2m、2.4m
Standard Length: 10m
Standard color: Yellow, black
Connection: Zipper connection