300mm Portable Ventilation Blower with 20m long Flexible duct

The framework of the flexible duct is made of steel wire, the body is wrapped with the saffron plastics cloth, for it can fix the flexible duct expediently, there is a metal ring every one meter, for it can connect the ventilator discretionarily, the both two sides are bunched with the rope.

The flexible duct is able to endure the high temperature, the acid, the alkali, the oleic acid and burning, it is easliy to turn, connect and schlep. it has been extensively used in maintaining underground cable, engine room, crypt, tunnel municipal conduit engineering, machine shipbuilding engineering, fire fight rescue and other construction in the bad air enviroment.