Hebei PPR pipe manufacturer

Advantages of r: 1. Sanitary and non-toxic: This product is a green product and can be used in pure water drinking pipeline systems. Second, it has good heat resistance: the working water temperature is ℃, and the short-term use temperature can reach ℃. It can be used continuously for a long time under the conditions of temperature of ℃ and working pressure of . Third, corrosion resistance and non-scaling: It has no chemical effect on most ions in the water and chemical substances in the building, and will not rust, corrode, or breed bacteria. It can avoid the worries of pipe scale and blockage and yellow spots and rust on basins and bathtubs. Fourth, light weight, high strength and good toughness: the density is ./3, which is only one-ninth of the steel pipe and one-tenth of the copper pipe. The pressure test strength can reach more than ./per square centimeter. Good toughness and impact resistance. . Fifth, thermal insulation and energy saving: The thermal conductivity at ℃ is .3/, which is only 1/200 of that of metal pipes than steel pipes (3-/) and copper pipes (3/). It is used for thermal insulation and energy saving of hot water pipes. The effect is excellent. Sixth, the pipeline resistance is small: the inner wall of the pipe is smooth and will not scale. The roughness coefficient of the inner wall is only ., which is much lower than that of metal pipes. Seventh, installation is convenient and reliable: Because polypropylene has good thermal welding properties, hot-melt connection connects pipes and pipe fittings made of the same material into a whole. No threading is required, and a joint connection can be completed in a few seconds. The connection with metal pipes and water dispensers uses high-quality nickel-plated copper inserts, which is safe and reliable and eliminates the hidden danger of water leakage. Eighth, beautiful appearance: The inner and outer walls of the product are smooth, the water flow resistance is small, the color is soft, and the shape is beautiful. Ninth, long service life: the pipeline system has a service life of - one year under normal use. Disadvantages of r connection method: R pipe installation mainly uses hot-melt pipe fittings. The welding time and pressure are difficult to control, and the process is highly random. During the hot-melt pushing process, it is easy to produce piles, thereby reducing the diameter and making the weld joint It becomes an irregular defect area, causing stress concentration, which affects the long-term performance of the R pipe system. For the electrofusion connection of R pipes, since the electric fuse mainly uses copper that promotes the degradation of R, it will accelerate the aging of R. ? Rapid stress cracking resistance: If cracks crack at defects or material unevenness and develop unstable under certain conditions, there is a risk of rapid cracking. Rapid cracking of pipelines means that when a pipeline cracks accidentally, the cracks grow rapidly at a speed of several hundred meters per second, causing a major accident in which tens of meters or even thousands of meters of pipeline are damaged in an instant. Since the microstructure of R determines its poor resistance to rapid cracking, R pipes are prohibited from being used for gas supply in Europe. Thermal expansion coefficient: The expansion coefficient of the R pipeline is relatively large, about ./·℃, which means that when the external temperature (such as winter and summer) or the internal water temperature (cold or hot water) changes, there will be a large amount of deformation. Because the R pipe is Rigid straight pipes cannot absorb deformation, so they can easily cause bending, deformation or even leakage of the piping system. High and low temperature resistance: R tube is resistant to low temperature differences. R is cold brittle (brittle point is -°C), so special care is required during construction in winter (below°C). Aging resistance: R tube has poor aging resistance. The R molecular chain structure - (-)- contains a large number of unstable tertiary carbon atoms, which is more susceptible to aging due to the effects of light, oxygen, and impurities (such as copper and iron ions). Therefore, R product instructions generally stipulate that the open-air stacking time should not exceed half a year. Hebei Shentong Plastic Industry Co., Ltd. specializes in the production of: R pipe fittings, aluminum-plastic R pipes, R steel-plastic pipes, water supply pipes, water supply and drainage pipes, electrical casings, pipe docking machines, R hot melt machines, and R pipe models. *.3R cold water pipe, *.R cold water pipe, 3*3.R cold water pipe, *.R hot water pipe, *3.R hot water pipe, 3*.R hot water pipe, R cold water pipe, R cold water pipe , 3R cold water pipe, R hot water pipe, R hot water pipe, 3R hot water pipe, Shijiazhuang R hot water pipe, Shijiazhuang R pipe, Hebei national standard R pipe, Hebei national standard R pipe, Hebei aluminum plastic pipe, aluminum plastic composite pipe, Shijiazhuang aluminum-plastic composite pipe, solar aluminum-plastic composite pipe, Hebei aluminum-plastic pipe manufacturer, Hebei aluminum-plastic composite pipe manufacturer, Shijiazhuang aluminum-plastic pipe factory price, aluminum-plastic pipe factory price, solar aluminum-plastic pipe factory price, R pipe factory price , Hebei R pipe factory price, Hebei water supply pipe, Hebei pipe docking machine model, Hebei pipe docking machine price, Hebei threading pipe, Hebei electrical casing, Hebei line pipe, Hebei sheathing pipe, Shijiazhuang line pipe, Shijiazhuang threading pipe, Shijiazhuang electrical protection pipe, Shijiazhuang drainage pipe, Shijiazhuang drainage pipe, Shijiazhuang downwater pipe, Shijiazhuang downwater pipe, Shijiazhuang R floor heating pipe, Hebei R floor heating pipe, Hebei floor heating pipe, Hebei floor heating pipe manufacturer, Shijiazhuang R floor heating pipe manufacturer, Shijiazhuang R Floor heating pipe factory price, North China R floor heating pipe, Shijiazhuang aluminum plastic pipe factory, Shijiazhuang R pipe factory, Shijiazhuang R floor heating pipe factory, Shijiazhuang R factory. Hebei Shentong Plastic Industry Co., Ltd.??