The hottest plastic pipe has a broad market

Plastic pipe market is broad

in recent years, new environmental protection plastic pipe has developed rapidly. Because of its advantages of small water loss, energy saving, material saving, ecological protection, convenient construction and so on, it is widely used in the fields of building water supply and drainage, urban water supply and drainage, gas pipeline and so on, and has become the main force of urban construction pipe in the new century

1 the application of plastic pipes is accelerating

since the mid-20th century, plastic pipes have been widely used in countries all over the world to replace traditional pipes, and have maintained a high growth rate. The growth rate of the plastic pipe market is about four times the average growth rate of the pipe market, which has been well developed and successfully applied in developed countries, especially in Europe

in the past two years, plastic pipes have set off one investment boom after another in China's pipeline industry, such as aluminum-plastic pipes, cross-linked pipes, PP-R pipes, PP-B (block copolymer polypropylene) pipes, PE gas pipes, PE water supply pipes, drainage and sewage pipes, etc., creating opportunities for the development of China's pipe industry to take off again and again. The amount of resin used in pipes in China has increased year by year. In recent years, the growth rate of plastic pipes has reached more than 20%, ranking first in the world

with the rapid development of housing industrialization in China, according to the prediction of relevant departments of the Ministry of construction, 80% of new residential buildings in China will use plastic pipes in 2010, and 50% of urban water supply will use plastic pipes. By 2015, 85% of the drainage pipes in new residential buildings nationwide will be plastic pipes, and the traditional cast iron pipes will be basically eliminated. 85% of the building water supply pipes, hot water supply and heating pipes will be plastic pipes. Galvanized steel pipes are basically eliminated from urban water supply pipelines. 80% of the water supply pipelines with a diameter of less than 400mm use plastic pipes, and 90% of the water supply pipelines in villages and towns use plastic pipes

some far sighted processing manufacturers have set their sights on Municipal Engineering and introduced advanced pipe processing production lines, making the number of such pipe processing lines in China reach 50, of which Anhui Guotong has 10 production lines with an annual processing capacity of 100000 tons, and Henan Ancai birch forest also has a processing capacity of 50000 tons/year. At the same time, some end users have also realized the advantages of plastic sewage pipes, abandoning the traditional cement pipes and cast iron pipes and choosing plastic pipes. For example, Jiangsu Yancheng Chemical Industry Park passed the bidding, and Yangzi Petrochemical Research Institute provided pipes and installation services, and built a 10 kilometer long plastic sewage pipe

with the acceleration of technological progress, the emerging new technologies, new materials and new processes make the advantages of plastic pipes more and more prominent compared with traditional materials. Compared with traditional metal pipe and cement pipe, plastic pipe has light weight (generally only 1//10 of metal pipe), good corrosion resistance, impact resistance and tensile strength. The inner surface of plastic pipe is much smoother than cast iron pipe, with small friction coefficient and fluid resistance, which can reduce the water transmission energy consumption by more than 5%. The comprehensive energy saving is good, and the manufacturing energy consumption can be reduced by 75%. It is convenient to transport, easy to install and has a service life of up to years. Polyethylene pipes have developed rapidly in the world in the past 10 years. Developed countries have an absolute advantage in the application of polyethylene pipes in the field of water supply and gas. Polyethylene pipes are not only widely used to replace traditional steel pipes and cast iron pipes, but also to replace PVC pipes. The reason lies in the technological innovation of polyethylene pipes in the past 10 years

2 plastic pipes have broad application prospects

plastic pipes are becoming more and more popular in today's life and industrial fields because of their corrosion resistance, aging resistance, environmental protection and safety. Especially in the construction industry, new plastic pipes can not only replace traditional building materials such as steel and wood, but also have the advantages of energy conservation, material conservation, ecological protection, improving the living environment, improving the function and quality of buildings, reducing the self weight of buildings, making work convenient and so on, The application field of plastic pipes is increasingly expanded. In addition to the continuous growth of construction, municipal water supply and agricultural (water supply, irrigation and drainage) pipelines, the application proportion of municipal sewage, communication, electricity, gas, heating, medical and other industries is also increasing significantly

2.1 urban sewage and water supply field

at present, the most used field of plastic pipes in China is urban water supply and drainage system. In recent years, the sales of water supply and drainage pipes, mainly polyethylene pipe (PE), polypropylene pipe (PP), polybutylene pipe (PB) and aluminum plastic composite pipe (Pap), have increased rapidly. In 2003, the domestic consumption of plastic pipes in this field has reached 300000 tons, and a complete industrial chain of special materials for pipes, pipe processing and municipal engineering application has been formed. Many plastic pipe manufacturers have begun to favor municipal engineering

up to now, the urban sewage discharge pipes in China are mainly cement pipes. However, the cement pipe joint is difficult to seal, resulting in sewage overflow. People began to call for safer and environmentally friendly sewage pipelines. With the deepening of scientific research and development of plastic pipe special materials and the increasingly mature processing technology, a variety of plastic special materials that can be used in the construction of urban sewage pipes have been developed. According to experts, this kind of sewage discharge pipe has good processability, convenient installation, corrosion resistance, service life of more than 50 years, and can be completely sealed, which can fundamentally avoid sewage pollution of groundwater, and become the first choice of sewage discharge pipe substitutes. At present, the underground pipes in the old urban area have reached the time of renewal. Coupled with the construction of emerging cities, its potential demand for plastic sewage pipes is self-evident. Manual fixtures are different

according to the total market demand of China's municipal pipelines and the national development plan for chemical building materials and plastic pipe industry, the average annual growth of plastic water supply pipes for Municipal Engineering in China during the Tenth Five Year Plan period is about 15000 kilometers, of which about 80% are dn400 millimeter pipes. The average length of newly added pipes of drainage pipes is about 10000 kilometers every year, and 20% of them are plastic pipes. By 2005, the market share of plastic pipelines in all kinds of pipelines in the country will reach more than 50%. Among them, 50% of urban water supply pipelines, 60% of rural water supply pipelines, 20% of urban drainage pipelines, and 50% of urban gas pipelines (medium and low pressure pipes) adopt plastic pipes. In 2015, the utilization rate of plastic pipes in new projects across the country will reach more than 85%. In recent years, the application practice of pipes in developed countries shows that the growth rate of polyolefin pipes is much faster than that of PVC pipes, both for water supply pipes and drainage pipes. It can be predicted that polyolefins, especially polyethylene pipes, will gradually dominate

2.2 building water supply and heating pipelines

with the development of science and technology and the improvement of people's living standards, "health" and "safety" have become the two most critical topics for modern people, and they are 2D molding problems. Therefore, plastic pipes, known as green pipes, have attracted more and more attention of modern urbanites who pursue health and fashionable life. In recent ten years, some developed countries have successively legislated or established industrial regulations to prohibit the use of galvanized steel pipes as drinking water delivery pipes, and proposed the comprehensive use of high-quality green pipes with plastic pipes as the main body, which are rust free, corrosion free, leakage free and scaling free. With the gradual increase in the use of new plastic pipes, on the basis of continuous understanding of their good performance, the popularity of this kind of products is greatly improving. According to the prediction of relevant departments of the Ministry of construction, by 2015, 85% of the drainage pipes in new residential buildings nationwide will be plastic pipes, and the traditional cast iron pipes will be basically eliminated. 85% of the building water supply pipes, hot water supply and heating pipes will be plastic pipes. Galvanized steel pipes are basically eliminated from urban water supply pipelines. 80% of the water supply pipelines with a diameter of less than 400mm use plastic pipes, and 90% of the water supply pipelines in villages and towns use plastic pipes

2.3 gas pipe

China's energy structure is changing in the 21st century, and natural gas will become the first choice of China's energy. According to the national development plan, China will start to build four major natural gas pipelines in the first 20 years of this century. At present, large-diameter and high-strength plastic coated steel pipes are still used in the high-pressure trunk line for natural gas transmission, and PE medium pressure gas pipes for distribution to users will be laid after natural gas enters the city. Take the 2.3 interface and program controlled West to east gas transmission project as an example. If the use of steel pipes in the trunk line is 1.72 million tons, PE gas pipes that have not been laid in various cities need nearly 2million tons of PE pipes

2.4 optical cable sheath

the information industry is the fastest growing industry in the 21st century, and optical cable is the fastest and safest channel in information transmission. The upsurge of global optical cable network construction has brought historical opportunities for the development of plastic optical cable sheath. China's post and telecommunications industry has developed very rapidly, and has crossed the historical stage from cable communication to optical fiber communication. The development of plastic optical cable sheath in China has also exceeded people's previous assumptions. China's plastic optical cable sheath started in 1995 and soon spread to all fields. It is estimated that by 2005, the annual consumption of optical cable sheath can be increased from the originally estimated 60000-80000 tons to more than 100000 tons

2.5 buried power pipes

another major landmark plan for urban construction in the 21st century in China is to bury all the power and communication lines standing on both sides of the urban road. At present, cement asbestos pipes are widely used as power protection pipes in China, and PVC or PE solid wall pipes or corrugated pipes are used as crossing conduits in a few occasions. The construction and maintenance period is long, and the road closure and large excavation cause great pressure on the traffic. In recent years, a new type of CPVC power protection sleeve has been widely used in the reconstruction of urban power cables by the Ministry of construction and the Ministry of electric power due to its excellent performance of high strength, high temperature resistance, flame retardant effect, high insulation, aging resistance, chemical corrosion resistance, and no corrosion by residual chlorine in water, and its convenient construction

3 popular plastic pipes

with the continuous expansion of the application field of plastic pipes, the varieties of plastic pipes are also increasing. In addition to the early developed PVC pipes for supply and drainage, chemical pipes, farmland drainage and irrigation pipes, and polyethylene pipes for gas, PVC core foaming pipes, PVC, PE double wall corrugated pipes, aluminum plastic composite pipes, plastic steel composite pipes, polyethylene silicone pipes, etc. have been added in recent years. At present, many new materials and technologies are being studied or tried out. It is certain that the technological progress of plastic pipes in the next 10 years will promote the rapid development and wider application of plastic pipes

3.1 polyvinyl chloride pipe (PVC)

among many pipe varieties, the consumption of PVC pipe is absolutely dominant. However, in recent years, the application practice of pipes in developed countries has shown that the development speed of polyolefin pipes is much faster than that of PVC pipes, whether in water supply pipes or drainage pipes. It can be predicted that polyolefins, especially polyethylene pipes, will gradually dominate

at the beginning of 2003, the first 10000 ton PVC pipe production enterprise in Tianjin invested and constructed by Tianjin Zhongke Plastic Industry Co., Ltd. was completed and put into operation, with a production capacity of 25000 tons, becoming the largest 10000 ton PVC plastic pipe production base in North China. Tianjin Zhongke Plastic Industry Co., Ltd. is the first enterprise in Tianjin to step into the top 30 domestic pipes. At present, it has cooperated with Tianjin University, Tianjin chemical plant (National PVC Research Center) and relevant design institutes to jointly build a technology research and development center integrating "industry, University and research", carry out the link between scientific research achievements transformation and industrialization, and develop new building materials that save energy, replace ecological resources, and are conducive to environmental protection

Fujian Hengtong Plastic Pipe Co., Ltd. developed rigid polyethylene (PVC-U) double wall corrugated pipes for buried drainage and sewage. Fujian Hengtong Plastic Pipe Co., Ltd. is the first high-tech enterprise in Fujian Province specializing in the development and production of large-diameter rigid polyethylene (PVC-U) double wall corrugated pipes for underground drainage and sewage.