Hose structure is usually divided into: the inner layer, the outer layer and the the skeleton layer (or middle layer). The hose inner layer directly withstand the wear and tear of the transmission medium erosion; the hose outer layer to protect the hose body from the external environment damage and erosion; Hose skeleton layer is the layer of pressure hose, give the hose pipe body strength and stiffness. The working pressure of the hose vary depending on the material and structure of the skeletal layer. Hose has been applied to many other areas of life and production, common hose pipe class include: water pipes, hot water pipes, steam pipes, or water pipe, food and beverage tube, air pipe, welded pipe, gas pipe, vent pipe, material pipe, pipeline , chemical pipe, pressure pipe, and so on. www.jinshuruanguanchang.com