Hose is an important part of modern industry, in many places will be used, common is the bathroom, although it is a common thing but many people do not know much about the specifications as well as the nature of the hose specifications? What are the main categories of raw materials for hose? The following is a brief introduction for you.

Introduction to the raw material classification of the hose:

PVC hose (sanitary plastic hose, plastic hose, plastic corrugated hose, sanitary hose, imported hose) had been widely used in water supply piping system and gas transmission piping system, but a few years PVC piping system in the field of gas transmission market share is nearly zero, the amount of water supply system has also slipped slightly. However, the use of PVC hose in non-pressurized piping systems such as drainage, sewerage and waste systems has enjoyed steady growth, mainly due to the fact that the production of PVC raw materials is not as dependent on crude oil as other thermoplastics, which makes its production costs relatively inexpensive.

Hoses (, plastic bellows, imported hoses) can be solid-walled or structural-walled in a variety of designs, and their connections are mainly made by solvent cementing. According to whether the use of plasticizers, can be divided into rigid polyvinyl chloride (corrosion resistance and high temperature resistance is relatively high, but also relatively high cost.

Although PE piping system does not have the cost advantage (the price of raw materials is relatively high), but it has been rapidly promoted and popularized. This is mainly due to the fast, convenient and reliable connection method of PE hose, i.e. the hot melt connection method. Teflon hose due to PE hose (sanitary plastic hose, plastic hose, polyethylene hose, sanitary hose, imported hose) melt temperature range and melt viscosity characteristics determine the PE hose has a very good melt welding, so that the strength of the PE hot melt connection joints to meet or even exceed the strength of the hose body. In addition, the use of PE electrofusion connecting fittings can also make the repair of PE piping systems easy and simple, thus improving the reliability of the piping.

PP hose (sanitary plastic hose, plastic hose, polypropylene hose, sanitary hose, imported hose) from the 1970s began to be used in the production of piping. According to the different polymer structure, PP materials can be divided into PP-H (homopolymer polypropylene), silicone hose PP-B (block copolymerization polypropylene) and PP-R (random copolymerization polypropylene) three categories.

PP-R piping system is an important member of the building with hot and cold water piping system. Domestic once appeared to promote the PP-R plastic piping system boom, but unfortunately, due to the interference of counterfeit and substandard products and substandard products, PP-R pipe market has not been a good and sustainable development, but on the contrary, the market has left a “plastic pipe is not durable,” the bad impression, so that a lot of water supply piping system of the architectural designers, as well as the developer and the party with the loss of confidence in the plastic piping. From a technical point of view, unqualified products are destroyed for various reasons. On the one hand, there is no use of qualified raw materials, in the early stage of development of plastic pipes, practitioners of raw materials for long-term performance and strength of the knowledge is not thorough enough, for the evaluation of raw materials is not a deep enough understanding of the method; on the other hand, the system is connected to the problem, because the modulus of the PP-R pipe in the plastic hose inside a relatively large, so the joints are prone to generate excess stress, especially steel-plastic transition Joints in the hot and cold water cycle after a period of time, there will be frequent leakage.