Introduction:

“SL” Positive ventilation hose has four types: Lay Flat type, Framework type, Spiral type and Special-

Shaped type and can be customized for every section (Length from 3 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℃ ~ 80 ℃
Diameter: 0.3m, 0.4m, 0.6m, 0.8m, 1m, 1.2m, 1.4m, 1.6m, 1.8m, 2m, 2.2m
Standard Length: 10m
Standard color: Yellow, Black, Green
Connection: Zipper connection, Coiled connection