For conveying gas, liquid, paste or granular materials, a class of tubular rubber products. Layer and inner and outer layers of the skeleton, the skeleton material layer is available cotton fibers, various synthetic fibers, carbon fibers or asbestos, such as steel. General hose inside and outside layer material made of natural rubber, styrene-butadiene rubber or butadiene rubber; oil hose neoprene, nitrile rubber; acid, high temperature hose using ethylene-propylene rubber, fluorine rubber or silicone rubber hose has used in domestic production in many areas, the use of induction conditions, common pipe class includes: pipes, hot water pipes, steam pipes, pipe sea, food and beverage pipes, air pipes, welded pipes, gas pipes, ventilation pipes, pipe materials , pipelines, chemical pipe, pressure pipe and so on.