With the introduction of the Twelfth Five-Year Plan, my country’s urbanization process will accelerate year by year. Every 1% increase in urbanization will require 3.2 billion cubic meters of urban water consumption. Therefore, the output of plastic pipes is still expected to maintain an average annual rate of 15%. Compound growth rate of about %.

China’s plastic pipes have developed into an important category of plastic products. Chemical building materials are the fourth type of new building materials emerging in contemporary times after steel, wood, and cement. Plastic pipes, plastic profiles, doors and windows are the two main types of chemical building materials that are used more frequently. Since 1994, the Chinese government has been jointly organized by the Ministry of Construction, the former Ministry of Chemical Industry, the former China National Light Industry Council, the National Building Materials Bureau, and the former China Petrochemical Corporation to jointly organize the “National Chemical Building Materials Coordination Leading Group” to formulate and publish relevant efforts. The development of chemical building materials targets, plans, policies, standards, etc. In just a few years, China’s plastic pipes, profiles, doors and windows have achieved rapid development. The national production capacity of plastic pipes in 1994 was 240,000 tons, and the output was 150,000 In 2000, the capacity was 1.64 million tons, and the output was 1 million tons (of which the output of PVC-U pipes was about 500,000 tons), the pipe production line has reached more than 2,000, and the large-scale production scale of hard polyvinyl chloride pipes is more than 10,000 tons. There are more than 30 enterprises nationwide.

Traditional pipe networks are mainly steel pipes, cast iron pipes, cement pipes and clay pipes. Traditional pipe materials generally have the characteristics of high energy consumption and environmental pollution. At the same time, the pipe network also has the following shortcomings: ① Short service life, generally 5-10 years; ②Poor chemical resistance and corrosion resistance; ③Poor hydraulic performance; ④High construction cost, long period; ⑤Poor pipeline integrity, easy to leak, etc. Since the middle of the 20th century, countries around the world, especially developed countries, have been developing special materials for plastic pipes and using plastic pipes.

In the past ten years, plastic pipes have developed rapidly. Plastic pipes are becoming more and more popular for their environmental protection and safety in daily life and industrial applications, and they play an important and irreplaceable role. Especially in the construction industry, plastic pipes can not only replace steel, wood, and traditional building materials in a large amount, but also have the advantages of energy saving, material saving, ecological protection, improvement of the living environment, improvement of building function and quality, reduction of building weight, and convenient completion. , Widely used in building water supply and drainage, urban water supply and drainage, gas pipes and other fields; the growth rate of plastic pipes is about 4 times the average growth rate of pipes, which is much higher than the growth rate of the national economy of various countries. Replacing cast iron pipes and galvanized steel pipes with environmentally-friendly green plastic pipes has become the trend of development in the new century. Plastic pipes have been successfully developed and widely used in developed countries, especially in Europe; the development in my country has been relatively lagging, but in recent years, with the enhancement of my country’s comprehensive national strength and the improvement of people’s living standards, plastic pipes have made rapid progress. development of.

Varieties and applications of plastic pipes have developed rapidly in the past few years. At present, my country’s plastic pipes have developed into a building materials industry with a relatively complete variety and large-scale production capacity. The main types of plastic pipes are: UPVC pipes, CPVC pipes, and PE pipes. , PAP pipe, PE-X pipe, PP-B pipe, PP-R pipe, PB pipe, ABS pipe, steel-plastic composite pipe, glass fiber reinforced pipe, etc. It is widely used in water supply pipes and drainage pipes for construction, urban buried water supply pipes, drainage pipes, gas pipes, water supply and drainage pipes for rural areas, irrigation pipes, and industrial sewage and chemical fluid transportation, etc., meeting the needs of various fields of the national economy. Different needs of pipes. We should develop and produce a certain type of plastic pipe according to the characteristics and application of various pipes.