Current situation and development trend of rubber hose industry in China

Hose industry production capacity and output in China

Hose industry in China has a history of 40 years, has become one of the main industries of China's rubber industry. In recent years, with China's automobile manufacturing, oil extraction, agricultural water conservancy, marine chemical industry and the rapid development of the construction industry on the hose demand is increasing. At the same time with the international standard close, which promotes the traditional hose technology, production methods, standards and structure of continuous improvement, the emergence of a number of advanced equipment, comprehensive strength of the hose backbone enterprises. According to statistics, as of the end of 1996, China's hose industry county and city level above the production plant has 148, in addition to a number of township hose enterprises, in about 300. If the township enterprises hose production is counted, the annual production capacity of more than 18,000,000 standard meters of hose. China's production of compressed air with rubber hose, water, general-purpose rubber hose, fabric-reinforced suction hose, welding with oxygen, acetylene rubber hose and lose dilute acid and alkali rubber hose manufacturers have 30, the total annual production of these hose production plant hose production of more than 60 million standard meters. China's annual output of hose in 1997 for 80 million standard meters, in 1998 for 98 million standard meters. At present, China's hose industry to steel wire, fiber braid or winding reinforced hose proportion has increased substantially, compared with the production of cloth hose, for 60% than 40%. Production capacity of more than 18,000,000 standard meters, basically to meet the domestic demand, and production capacity is larger, there are still a certain number of hose can be exported.

China's hose industry production status

China's hose industry in the last decade has made great progress in production, hose with elastomer, reinforced with steel wire and fiber varieties and quantities have also increased significantly. Currently used in the production of hose with dozens of rubber and elastomers, commonly used are: natural rubber, styrene butadiene rubber, EPDM, nitrile rubber, hydrogenated nitrile rubber, neoprene, chlorosulfonated polyethylene, chlorinated polyethylene and fluorine rubber. In addition certain thermoplastic elastomers such as ethylene-acrylic elastomers and polyacrylic elastomers have also found application. This shows a significant increase in the variety of hoses produced, as well as a wider choice of reinforcement materials for hoses. The grades of fibres and steel wires are basically sufficient for the production of hoses. In the production of air, water low-pressure hose still to artificial silk, polyester fibres as reinforcing materials, and in the production of high pressure hydraulic hose still steel wire as hose reinforcing materials, the steel wire selected, according to the production of hydraulic hose pressure and size of different, wire diameter from 0.20mm to 0.80mm ranging. In the production of large diameter hose, but also the choice of steel wire cord and flat steel wire as a reinforcing material, with high strength, dense and fatigue-resistant properties.

At present, from the hose industry, the molding process used with foreign countries, is also a hard core method, soft core method and no core method of three, with soft core method and no core method of production of hose more. From the vulcanization process, the vast majority still use the nylon water covering cloth after steam vulcanization. In the last ten years, nylon water wrapped cloth has replaced the cotton water wrapped cloth, with nylon cloth has been successful in many domestic hose manufacturers, which is a measure to improve the quality of the appearance of the hose. The appearance quality of the hose wrapped with nylon water wrapped cloth meets the requirements of HG2185-91 rubber hose appearance quality standard. With the increase in the amount of synthetic rubber, hydraulic hose, high pressure resin hose, oilfield hose, hose for the automotive industry, as well as large diameter, large length hose have been industrialized production to steel wire or fiber braided and wound structure of the proportion of a large increase in the advanced level of the hose industry with the world to shorten the gap greatly.

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