With the improvement of people's living standards, environmental protection awareness and health concerns, there is a green revolution in the area of water supple and drainage. In the past, most pipes are made of metal. According to the studies, the life span of the traditional pipe is less than 5 years and it will lead to a smell in the water, which annoys the people and results in a social problem too. By contrast, plastic pipe has much more advantages. It is very light, healthy and safe; it is good to resist corrosion, high pressure and it can save metal and energy. Therefore, the plastic pipe is mainly made of the engineering plastics and occupies a very important position in the engineering and its application has formed an irresistible trend of development.
First, it seems that the plastic pipe buried in the ground is less harder and stronger than the cement pipe, especially the reinforced concrete pipe. Actually, it is a kind of flexible pipe. In the right case, the plastic pipe burdens the pressure with the soil surrounding it. Therefore, it can satisfy the requirements of the mechanics without the same hardness with the engineering plastics.
Second, plastic pipe has better sealing performance than the traditional one. Usually, the cement pipe is sealed by wiping cement only, which will lead to leakage inevitably. What's worse, the traditional pipe is very hard, and the slight movement such as the uneven settlement of the soil will damage the connection. On average, the cement pipe can work for 15 years, while the plastic pipe for 50-100 years.
Third, the plastic pipe can resist corrosion better. Usually, the sewage, rainwater is corrosive and the water with industrial waste is more corrosive, so the traditional pipe especially the metal pipe is easy to be decayed In contrast, plastic pipe is better to survive.
Fourth, it is easy for workers to lay plastic pipe. As a matter of fact, it is light, long with fewer joints. And it can be connected very conveniently, constructed very easily. Besides, it asks lower requirement for the trench with less construction cost. Therefore, it is superior in the city or adverse natural conditions.
In the integrated aspect, the advantages of the plastic pipe are being recognized by more and more people. Though its price is slightly higher than cement pipe, the total project cost is not higher. All in all, it is inevitable for the rubber hose to replace the traditional one.
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