The development of plastic hoses in China

Plastic hose has the characteristics of light weight, corrosion resistance, low water loss, and convenient installation. It is favored by the pipeline engineering community. At the same time, compared with traditional metal pipes, plastic hoses consume less energy in production (generally less than 1: 4 ), the environmental pollution is small, and the government and related departments are paying more and more attention. In foreign countries, plastic hoses are continuously replacing metal or other traditional material pipes, and their development is very rapid. In the ten years from 1980 to 1990, except for plastic hoses, the total growth rate of other pipe materials was less than 2%, but the growth rate of plastic hoses was 4 times the total growth rate of other pipes, reaching 8%. In the 1990s, the demand for plastic hoses is still increasing at an annual rate of 4.2%, and its output value is increasing at an annual rate of about 8%. my country began to produce plastic hoses in the 1970s, and began to popularize and apply them in engineering construction in the early 1980s. In the past two decades, plastic hoses have been greatly developed, not only in quantity, but also in varieties and specifications. By the end of 1999, there were about 2,000 plastic hose production lines nationwide, of which about 15% were imported equipment. In 1999, the production capacity of various plastic hoses in my country reached 1.65 million tons, and the actual output was about 1 million tons. Among them, PVC-U pipe is 500,000 tons, accounting for 50%; PE pipe is 360,000 tons, accounting for 36%. In recent years, as the construction industry has become an important pillar industry of the national economy and the rapid development of the housing industry, building indoor plastic hoses have developed rapidly and have now become a hot spot for investment. The development of plastic hoses is currently mainly based on UPVC pipes and PE pipes, and vigorously develops new composite and modified plastic hoses. In 2010, the main products of plastic hoses and food plastic hoses must meet market requirements. The market has a complete range of products, and the quality, grade and supporting level have been significantly improved, and the overall level is close to the international advanced level. In new construction, reconstruction and expansion projects across the country, 80% of building drainage pipes use plastic hoses; 80% of building water supply, hot water supply and heating pipes use plastic hoses; 90% of wire sheathing pipes use plastic hoses; construction rainwater drainage 70% of pipes use plastic hoses; 70% of urban water supply pipes (below DN400Inm) use plastic hoses, 70% of rural water supply pipes use plastic hoses; 50% of urban drainage pipes use plastic hoses; urban gas pipelines (medium and low pressure pipes) 60% use plastic hose.