PP-R pipe system is built around hot and cold water piping system is an important one. Once appeared to promote domestic PP-R plastic pipe system of the boom, but unfortunately, the car with a hose supply, due to the interference of counterfeit products and substandard products, automotive hose outlets, PP-R pipe market has not been good sustainable development, on the contrary gave the market left a 'durable plastic pipe is not' bad impression, so many water piping system architects and developers and plastic pipes with party lost confidence. From a technical point of view, the car with a hose, the destruction of substandard products happen for many reasons. On the one hand there is no use of qualified raw materials, plastic pipe in the early stages of development, practitioners thorough enough understanding of raw materials for the long-term performance and strength evaluation method for understanding the raw materials also deep enough; the other is connected to the system is a problem later, because modulus PP-R pipe inside the plastic hose is relatively large, so joints prone to excessive stress, particularly steel-plastic transition fittings and hot water in the role for some time, there will be frequent bleeding leak situation. Users should use the hose in the hose quality specifications permitted temperature range. If the working ambient temperature exceeds this range, it will affect the life of the hose, automotive hose manufacturer, which will greatly reduce the ability to withstand pressure. Operating ambient temperature is too high or too low long-term system, recommended hose jacket. If you use special chemical compatibility of the hydraulic medium, the user should ensure that the choice of hose assembly inside the hose, the outer layer, joints and O-rings which are compatible with the media. Bending radius bending radius meanings: as right, R is the hose can be bent without damage or shorten the life of the inner circle of the (minimum) radius. For a hose, R value is certain. If the bend radius is less than when using the R value, the hose with textile reinforcement layer is kink may occur. Use a spiral wire hose will be better. Automotive hose manufacturer, SOUTH hose (certification), the car provided by the Yichang SOUTH Hose Belt Co. hose. Yichang SOUTH hose tape Limited (www.znjgjd.com) (www.1234.com) is Yichang, Hubei Province, the other leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customers needs. SOUTH hose in leadership with the staff warmly welcome all inquiries negotiations to create a better future SOUTH hose.