Hose is used to transport the gas, liquid, paste or granular materials, a class of tubular rubber products. Layer and the inner and outer layers of the skeleton, the skeleton material layer can be cotton fibers, various synthetic fibers, carbon fibers or asbestos, such as steel. Product details inside and outside hose layer hose is generally used to transport gas, liquid, paste or granular materials, a class of tubular rubber products. Layer and the inner and outer layers of the skeleton, the skeleton material layer can be cotton fibers, various synthetic fibers, carbon fibers or asbestos, such as steel. General hose inside and outside layer material used natural rubber, styrene or butadiene rubber; oil hose using neoprene, nitrile rubber; acid, high temperature hose using EPDM, Viton or silicone rubber. The tube hose directly to withstand transport medium wear, erosion, and to prevent leakage; steel skeleton row suction hose outer layer to protect against external skeleton layer damage and erosion; skeleton layer is confined layer hose, giving the tube strength and stiffness. Hose working pressure depends on the material and structure of the skeletal layer. Hose its skeleton layer materials and structures (see figure) can be divided into full plastic hose (no fabric material), fabric hose (skeleton layer of fabric layers, Figure a), to attract hose (outer fabric layer and a layer of metal spiral Figure b), braided hose (skeleton layer of woven wire or fabric, Figure c), winding hose (skeleton layer wire or cord winding layer, Figure d), knitted hose (skeleton layer for knitted fabrics, Figure e) Short fiber hose (short fiber and rubber blend pressure is made). Which attract working under negative pressure hose, steel wire braided hose or winding hose can withstand even higher pressure 80 ~ 600MPa.