Mine Used Hose: Diameter:1.5",1.75",2",2.5", 3", ... :10Bar,14Bar,17Bar,21Bar,28Bar The mine used hose refers to the chloroprene rubber hoses used for coal mine fire prevention, draining ... demands of special performance compared to other lining fire hose. Commonly used for indoor fire prevention, industrial effluent, agricultural irrigation, industrial and ... /20,17/250 30/450,42/600,51/750 Mine Used Hose