Specification :

Construction: the hose consists of an innertube, reinforcement layer, Middle layerand rubber cover.
Feature: the hose body length decreased, the diameter increase and on the expansion state after hose enduring internal upright pressure.Under this conditions, the hose accomplishes the hole sealing function.
Appliation: 1.Apply to coal mine and clear dust.
2.Apply to engineering construction and leak prevention construction underground.
3.Apply to tunnel exploitation ang pour cast underground and underwate.