The development of plastic pipes in China
The plastic pipe has the advantages of light weight, corrosion resistance, water loss, easy installation, the pipeline by the engineering of all ages, at the same time because plastic pipe compared with traditional metal tube, the production of low energy consumption (less than 1:4), small environmental pollution, are increasingly affected by the government and relevant departments.
In foreign countries, plastic pipes are constantly replacing pipes with metal or other traditional materials, and the development of plastic pipes is very rapid. From 1980-1990 years to ten years in the plastic pipe, various materials tube growth rate sum is less than 2% and 4 times, but the growth rate of other plastic pipe is the sum of all kinds of tube growth rate reached 8%, in 90s the demand of plastic pipe is still at an annual rate of 4.2% growth, its output at a rate of about 8% annual increase.
China began to produce plastic pipes since 70s and began to be applied in the construction of Engineering in the early 80s. In the past twenty years, plastic pipes have been greatly developed, not only in quantity but also in variety and specification. By the end of 1999, there were about 2000 plastic pipe production lines nationwide, of which about 15% of the imported equipment were introduced. In 1999, the production capacity of various plastic pipes in China has reached 1 million 650 thousand tons, and the actual production is about 1 million tons. The PVC - U pipe 500 thousand tons, accounting for 50%; PE pipe 360 thousand tons, accounting for 36%. In recent years, with the rapid development of construction industry as an important pillar industry of national economy and housing industry, the development of indoor plastic pipe has been developing rapidly, and has become a hot topic of investment nowadays.
The development of plastic pipe, the main pipe and PE pipe based on UPVC, and vigorously develop new and modified composite plastic pipe. In 2010, the main products of plastic pipes should meet the needs of the market, the market products are complete, the quality, grade and matching level have been significantly improved, and the overall level is close to the international advanced level. In the new construction, renovation and expansion project, the construction of drainage pipe with 80% plastic pipe; building water supply, water supply and heating pipe 80% using plastic pipe; wire sleeve of 90% plastic pipe; building rainwater drainage pipe using 70% plastic pipe; city water supply pipe (DN400Inm) with 70% plastic pipe, water supply pipe 70% the use of plastic pipe; city drainage pipe 50% plastic pipe; city gas pipeline (low pressure pipe in plastic pipe by 60%).