The hottest plastic pipes have more advantages tha

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Plastic pipes have more advantages than traditional pipes

manufacturing industry is the key area to encourage foreign investment this time. The development of plastic pipes

in the process of modernization, the development speed of plastic pipes exceeds the economic development speed of the same period in developed countries. It is a trend to replace traditional pipes with plastic pipes. Even in developed countries that have built dense plastic pipes, the application of plastic pipes is still growing year by year. For example, the total consumption of plastic pipes in Europe was 2.134 million tons in 1986, and increased to 3.465 million tons in 1998, with an average annual growth rate of 5.2%, exceeding the national economic growth rate in the same period. In the past 10 years, the average annual growth rate of China's plastic pipe market was 20%. In 2000, 2002 and 2003, the output reached 700000 ~ 800000 tons, 1.3 million tons and 1.5 million tons respectively, with a growth rate of 15%, of which PVC pipes accounted for 55% and PE pipes accounted for 40%

advantages of plastic pipes

plastic buried pipes have been widely used abroad. The reason is that plastic buried pipes have many advantages over traditional buried pipes such as cast iron Sida high-tech developed universal testing machine control software pipes, steel pipes, cement pipes and so on:

strength and rigidity

the strength and rigidity of plastic buried pipes on the surface are less than that of cement pipes. In fact, plastic buried pipes are "flexible pipes". Under the condition of correct design and laying construction, plastic buried pipes bear the load together with the surrounding soil. Therefore, plastic buried pipes do not need to reach the same strength and rigidity as "rigid pipes" such as concrete pipes, so they can meet the mechanical performance requirements in buried use

hydraulic characteristics

the inner wall of the plastic pipe is smooth, the resistance is small, and the flow flux is 5. The column guard board is large. Under the same diameter, the water flow of the plastic pipe is larger than that of the concrete pipe. When the terrain has slope, the pipe diameter of plastic pipe can be reduced and the construction volume is small


the leakproofness of cement pipes is very poor, and the domestic flat joint concrete pipes are sealed only by plastering a circle of concrete at the connection. It is difficult to ensure no leakage during construction. In addition, the concrete pipe is a rigid pipe, and a slight movement (such as uneven settlement of soil) can cause damage to the connection. In addition, the cement pipe is sealed with vulcanized rubber ring, and the plastic pipe connection is sealed with thermoplastic elastomer seal ring. The service life of the former is shorter than that of the latter, and the position of the plastic passive needle can be adjusted according to the handle outside the glass cover. There are a series of strict requirements for the connection and sealing of the material pipe, which can ensure that there will be no leakage to the greatest extent

service life and corrosion resistance

the service life of cement pipe is only 15 years, and the service life of plastic pipe is as long as 50 ~ 100 years. Domestic sewage, rainwater, etc. are usually corrosive, and industrial sewage is more corrosive. The corrosion resistance of metal and cement buried drainage pipes is worse than that of plastic pipes. In some areas, the outdoor natural environment is very corrosive. For example, when land was reclaimed from the sea in Tanggu new area of Tianjin, the cement sewage pipes laid could not be found after 3 years. They were all corroded by the salt in the sea water, so they had to lay plastic pipes again

laying construction

plastic pipes are light in weight, long in length, few joints, convenient to connect, fast in construction, low in construction costs, and have more prominent advantages in cities and harsh natural conditions

source: China Packaging News

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