The hose structure usually divided into: the inner layer, outer layer and skeleton layer (or middle layer). Within the layer directly withstand the wear and tear of the transmission medium, erosion; outer layer protection hose damage and erosion of the body from the external environment; skeleton layer is a a hose layer of pressure, given the strength and stiffness of the tube. The working pressure of the hose depending on the material and structure of the skeleton layer. Skeleton layer is different from the common hose: the full rubber hose (no fabric material); fabric hose (skeleton layer fabric layer -); suction hose (fabric layer is a layer of metal spiral suitable under negative pressure conditions job); braided hose (skeleton layer of woven wire or fabric); winding hose (skeleton layer of wire or cord wound layer endurance are common in the 80 ~ 600MPa even higher pressure) suction hose. Knitted hose (skeleton layer knitted fabric); short fiber hose (short fibers and rubber blended pressure from) http://www.jinshuruanguanchang.com