High pressure braided hose, is widely used in aspects of the comprehensive mechanization of coal mining, mining machinery, metallurgical hydraulichose. Although this market demand is great, but in twentieth Century 60 years ago, the domestic factory is far cannot satisfy market demand. At that time, braided hose at home and abroad all adopt cored knitting technology,technology of the high cost and low efficiency, which can make manyfactories committed. In order to get out of this situation, the expansion of production, Shenyang factory of the fourth rubber to take the lead in developing a new technology, has become the first domestic uses non core braided hose manufacturers of new technology. Its advanced technology,popularized in large area in China; and the hose, has been the State Development Planning Commission awarded the "national quality productsSilver Award in 1980".

In 1970, faced with a large number of market demand, technician, chief engineer Zong Bingchen and factory in Shenyang factory of the fourth rubber workers and cadres in together, decided in the procedure and process together on her efforts, strive to figure out a solution to thepractical problem to. Then, after researching and exploring repeatedly, the factory workers in more than a year, through the two main processes were carried out thousands of experiments, finally developed a unique function of"die". This cap the size of mouth, unexpectedly successful instead of tons ofsteel core and the service life of rubber, plastic Co., a large number of core wheel, thereby achieving a revolutionary high pressure hose production technology -- no core process was born. With this process, the length of single hose from the original two meters, five meters, all of a sudden become tens of meters, hundreds of meters, the cost is greatly reduced, but also has the advantages of short flow, low energy consumption, small occupied area, good quality advantage, meet the market demand for large length of hose.