ppr hot and cold water pipes S5, S4, S3.2, S2.5, S2 represent five models, and the bearing pressure of each model is different. ppr is a kind of hot and cold water pipes, which are divided into five series: S5, S4, S3.2, S2.5, and S2. The pressures of these five series are 1.25MPA, 1.6MPA, 2MPA, 2.5MPA and 3.2MPA respectively. , the larger the value, the better the pressure bearing capacity. In the current construction process, PPR pipes have begun to be widely used, because compared with traditional cast iron pipes or cement pipes, PPR is more energy-saving and environmentally friendly, and has corrosion resistance, which greatly increases the service life. In addition, the inner wall of the PPR hot and cold water pipes It is not easy to accumulate drains, and it is very convenient to clean and maintain, so it is more popular than traditional water pipes.
However, there are also some requirements for the production and installation of PPR hot water pipes. It is composed of PP-R pipes and pipe fittings. These pipe fittings must meet the hygienic requirements of GB/T17219 standard to achieve complete five poisons. When the material is selected, its pH value should be controlled between 1 and 14, and the acid and alkali should be resistant to corrosion. Secondly, the pipes of the PPR hot and cold water pipes must be uniform and smooth, because the uneven pipe wall will increase the water flow resistance, so that the water channels will accumulate on the inner wall of the pipe, and the smoother the inner wall is, the less the vibration and noise of the water pipe will be. Finally, the installation of the PPR pipeline cannot be exposed outside the house structure, because the temperature of the inner wall of the pipeline is uniform, and the external exposure can easily cause the pipeline to rupture.
S is the symbol of the tube series, the smaller the number followed by the S, the greater the wall thickness. Because of these advantages, PPR pipes are widely used in major buildings. The invention of this kind of pipes provides great convenience for the fields of building drainage, urban gas and industrial fluid transportation.