UPVC pipe is a kind of plastic pipe which is made of polyvinyl chloride (PVC) resin and does not contain plasticizer. With the development of chemical industry technology, non-toxic grade pipes can now be produced, so it has the performance of general polyvinyl chloride, and some excellent properties are added, specifically, it has the advantages of corrosion resistance and good softness, so it is especially suitable for water supply pipe network. Because it is not conductive, it is not easy to have an electrochemical reaction with acids, bases and salts, and acids, bases and salts are difficult to corrodes it, so there is no need for external anti-corrosion coating and lining. And the softness is good, which overcomes the shortcomings of the brittleness of the plastic pipe in the past, and can produce yield under the action of load without breaking. Such an experiment has been done: put a DN50mm UPVC tube on the ground, and the Crown 3.0 car was driven on it, and the tube was only flat, but it did not break. Then we run a loaded Dongfeng car over the pipe, and again the pipe is deformed without breaking. In addition, the UPVC tube has a small elastic modulus, which can reduce the amplitude of the pressure shock and reduce the impact force of the water hammer. The inner wall of U-PVC pipe is smooth and the resistance is small (the resistance coefficient of UPVC pipe is 0.009, while the general galvanized pipe. The resistance coefficient of cast iron pipe is 0.012-0.013), so it is obvious that the hydraulic conditions are good. When the same diameter pipe is used to transport the same liquid, the resistance of UPVC pipe is about 30% less than that of galvanized pipe and cast iron pipe. When the head loss is the same, the water transfer capacity of UPVC pipe is more than 20% larger than that of cast iron pipe. Because the inner wall of the UPVC pipe is smooth, the liquid will not scale inside the flow, so its conveying capacity will not decrease with the increase of running time. This is also the insurmountable disadvantage of galvanized pipes and cast iron pipes. With the continuous in-depth development of reform and opening up, people's living standards continue to improve, and the quality of tap water is becoming more and more demanding. The water supply industry, in addition to ensuring that the outgoing water meets the standard for drinking water, must also make the water transported through the pipe network qualified. People have a strong reaction to the phenomenon of "yellow water" and "black water" in tap water, and the main reason for the poor water quality of the pipe network is the corrosion of the water supply pipe, especially the cold galvanized pipe, the coating on the inner wall of the pipe is unstable, and the pipe is not used for a long time, resulting in iron smell and color in the water, and the corrosion of the galvanized pipe buried in the ground is more serious. UPVC tubes are corrosion-resistant. No scaling, can inhibit bacterial growth, is conducive to protecting water quality from secondary pollution of the pipeline. Therefore, UPVC pipe has a wide range of application prospects, especially a large number of buried pipes in front of the user's water meter can be used.
 

1- Good tensile and compressive strength.
2- The wall of the pvc pipe is very smooth, so the resistance of the water flow is very small, and its water transmission capacity is 20% higher than that of the cast iron pipe of the same diameter, and the water transmission effect is very high.
3- PVC pipe corrosion resistance and drug resistance is also very good, with good acid resistance, alkali resistance, corrosion resistance, not affected by moisture and soil pH, long service life.
4- PVC pipe also has a good watertightness, this pipe regardless of the use of bonding or rubber ring connection, can maintain good watertightness.
5- PVC pipe has good tensile and thermal stability, can adapt to different environments, and has a wide range of use.
6- The hardness of pvc pipe is good, so it is used as a drain pipe, which can prevent the erosion of insects and ants and has a longer service life.

 

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