Industrial grade rubber hoses, whether the medium is water, gas, oil, chemicals or other, usually consists of internal glue, outer glue and intermediate layer. The intermediate layer is usually dominated by a woven component that enhances the strength of the hose. In addition, there are common in-line steel wires between the inner and outer rubber, which are suitable for vacuum negative pressure operation. There is also a conductive wire for working environments that prohibit sparks, such as fuel oil.
In order to adapt to the physical and chemical conditions of operation in various industries, industrial hoses usually have very strict implementation standards for the chemical raw materials and processes of the inner and outer colloids. Classified according to working conditions, common are:
Water hose. Used in irrigation, horticulture, construction, fire protection, equipment and tank cleaning, agricultural fertilizers, manure, industrial sewage drainage, etc. The inner rubber material is mostly PVC and EPDM.
Hot water and steam hoses. Used for cooling equipment cooling water, engine engine hot and cold water, food processing, especially for hot water and saturated steam in dairy plants. The inner rubber material is mostly EPDM.
Beverage food hose. For non-fat such as milk, carbonated, orange juice, beer, animal and vegetable oil, drinking water and so on. The inner rubber material is mostly NR or synthetic rubber. Standard qualifications such as food grade FDA, DVGWA grade, KTW or CE are usually required.
Air hose. Used in compressors, pneumatics, mining, construction, etc. The inner rubber material is mostly composed of NBR, PVC composite, PU and SBR. There are usually strict requirements for the applicable pressure.
Welding hose. Used for gas welding, cutting, etc. The inner rubber material is mostly NBR or synthetic rubber, and the outer rubber is usually made of red, blue, yellow, etc. to show a special gas.
Ventilation hose. Used in hot gas, dust, smoke, chemical gas emissions, etc. The inner rubber is mostly composed of thermoplastic materials and PVC. Usually the tube has a retractable design.
Material suction hose. It is used for gas and solid transportation of gas, mist, powder, granules, fiber, gravel, cement, fertilizer, coal dust, sand, concrete, gypsum and so on. The inner rubber material is mostly NR, NBR, SBR and PU. Generally, the outer rubber has high abrasion resistance.
Oil hose. Used in fuel, diesel, kerosene, petroleum, etc. The inner rubber material is mostly composed of NBR, PVC composite and SBR. Usually there are conductive wires between the inner and outer glue to prevent Mars.
Chemical hose. Used in acid, chemical solutions, etc. The inner rubber material is mostly EPDM. Often this requires custom materials and designs.