PE pipe and ppr pipe are two kinds of water pipes that are relatively common at present. PE pipe is made of polyethylene material, while PPR water pipe is a kind of polymeric material pipe, and the material is random copolymer polypropylene. What is the difference between pe pipe and ppr pipe? pe pipe and ppr pipe have their own advantages and disadvantages in terms of heat resistance, welding method, welding temperature, low temperature impact strength, and pipe size.
First, the introduction of PE pipe
PE pipe is a pipe made of polyethylene material through processing technology. According to different polymerization conditions such as temperature, resins of different densities can be obtained, so there are high-density polyethylene, medium-density polyethylene and low-density poly-Zene. point.
Second, the introduction of PPR tube
PPR water pipe is a polymeric material pipe. PPR is the abbreviation of English random copolymer polypropylene (Polypropylene-Random). Commonly known as three-type polypropylene. PPR pipe is an updated product of UPVC water supply pipe, aluminum plastic pipe, PE pipe, PE-X pipe and PE-RT pipe. Because it uses random copolymerization technology, the strength and high temperature resistance of polypropylene are well guaranteed, thus becoming the main force of water pipe materials.
Third, the advantages of PE pipe
1. The connection is reliable, the connection part of the sleeve pipe fitting or the locking pipe fitting is firm, and there will be no leakage.
2. Polyethylene has good low temperature impact resistance, low low temperature embrittlement temperature, and can be used in the temperature range of 60 ° C. In winter construction, due to the good impact resistance of the material, tube brittleness will not occur.
3. Good stress cracking resistance, small gap, high shear strength, good scratch resistance, and environmental stress cracking resistance are also very prominent.
4. Good chemical corrosion resistance, can withstand the corrosion of various chemical media, and the presence of chemical substances in the soil will not cause any degradation to the pipeline.
5. Good wear resistance, which means that the PE pipe has a longer service life and better economy.
6. Good elasticity, the dexterity of the pipeline makes it easy to bend, and the project can change the direction of obstacles around the pipeline. In many cases, the dexterity of the pipeline can reduce the number of pipe fittings and reduce installation costs.
7. The PE pipeline has small flow resistance, stable performance and no adhesion, which ensures that the PE pipeline has a higher conveying capacity than the traditional pipeline, and also reduces the pressure loss of the pipeline and the energy consumption of water.
8. It can be coiled into a thin circle, which is simple and convenient to install, use and recycle, and can be used repeatedly.
Fourth, the advantages of PPR tube
1. The PPR pipe has good corrosion resistance, does not form scale, and does not breed bacteria.
2. PPR pipes have been strictly tested and fully meet the requirements of national drinking water standards, and can be used in drinking water and food industry pipeline systems.
3. The softening temperature of the PPR pipe is 131.5 degrees. Under the long-term continuous working pressure, it can transport hot water with a water temperature of up to 95 degrees. Also has good thermal insulation
The thermal conductivity is about 1/200 of that of the metal pipe, which reduces the heat loss in the process of transporting hot water.
4. The inner wall of the PPR pipe is smooth, the water flow resistance is small, and the flow is large. Compared with the metal of the same inner diameter, the flow volume can be increased by more than 30%.
5. PPR pipe has good toughness, impact resistance and high mechanical strength, especially in low temperature and high temperature environment.
6. The weight of PPR pipe at 20°C is only one-ninth of that of steel pipe and one-tenth of that of copper pipe. The weight of the product is light, which greatly reduces the construction strength.
Finally, which one is better, pe pipe or ppr pipe
1. Heat resistance
The maximum stable temperature of the PE water pipe is 70°C, and the minimum temperature is minus 30°C. The maximum stable temperature of the PPR pipe is 70°C, and the minimum temperature is minus 10°C. It can be seen that the PE water pipe and the PPR water pipe have the same high temperature resistance performance, but the low temperature performance of the PE pipe is better than that of the PPR pipe.
2. Welding method
There are similarities and differences in the welding methods of pipes. Both kinds of pipes can be connected together by hot melt welding, but the ppr pipe is relatively simple in the construction process, and its edge is relatively smooth. The pe pipeline is irregular, used for a long time, easy to block.
3. Soldering temperature
The welding temperature of ppr pipe can reach 260 degrees, but the pe pipe can only reach 230 degrees, which is lower than that of ppr pipe.
4. Low temperature impact strength
Why ppr pipes are preferred for water pipes is precisely because ppr pipes are stronger than pe pipes and can resist the impact of water pressure. The PE water pipe is more flexible than the PPR water pipe.
5. Pipe size
The size of pe pipe can reach dn1000, so it is often used for drainage pipes. The size of the ppr pipe is dn160, so it is often used as a water supply pipe.
