What is the difference between PE RT tube and PP-R tube
1. PP-R pipe:
China management expert -- Weixing PPR national standard drafting unit!!!
PPR pipe is officially known as random copolymer polypropylene pipe, which is the most widely used water supply pipeline in home decoration engineering.
The interface of PPR pipe adopts the hot-melt technology, and the pipes are fully integrated together. Therefore, once the installation pressure test is passed, there will be no water leakage again, and the reliability is very high. However, this is not to say that PPR water pipe has no defects. Its high temperature resistance and pressure resistance are slightly poor, and the long-term working temperature can not exceed 70 ℃; the length of each section is limited, and it can not be bent. If the pipe laying distance is long or there are many corners, a large number of joints will be used in the construction; the pipe is cheap, but the price of accessories is relatively high. From the comprehensive performance point of view, PPR pipe is the current cost-effective pipe material, so it has become the preferred material for the reconstruction of domestic water pipe.
The PPR tubes sold on the market are mainly in two colors, white and gray. The dealer's answer is that the difference is caused by the different raw materials PPR particles.
In general, the original water pipe will be replaced in the water and electricity transformation. Home decoration companies and businesses recommend that the fitter should choose hot water pipe when installing PPR pipe, even if it flows through the cold water pipe. They said that because the technical parameters of hot water pipe are higher than that of cold water pipe, and the price difference is not big, so hot water pipe is used in waterway reconstruction. Another fact is that even if you want to buy cold water pipes, it is very difficult to buy them in the market, because cold water pipes only supply the tooling market, not the home decoration market.
The diameter of PPR pipe can be from 16mm to 160mm. There are mainly two kinds of pipes used in home decoration, which are 20 mm and 25 mm (commonly known as 4 pipes and 6 pipes respectively), of which 4 pipes are used more.
PP-R pipe, also known as type III polypropylene pipe, is extruded into pipe by random copolymerization polypropylene, and injection molded into pipe fitting. It is a new type of plastic pipe product developed and applied in Europe in the early 1990s. In the late 1980s, about 5% PE was randomly and uniformly polymerized (random copolymerization) in the molecular chain of PP by gas phase copolymerization process, which became a new generation of pipeline material. It has good impact resistance and long-term creep properties.