At present, China’s gas with polyethylene pipe fittings is still blank. In recent years, China’s inter-city natural gas pipeline laying volume is growing rapidly year by year, but the amount of plastic pipe is only 20%, the potential for market development is still huge. China’s upcoming launch of the “South-North Water Transfer”, the western development of the “West-East gas transmission”, the construction of natural gas transmission pipeline network through the country, urban and rural water and gas transmission project construction of plastic pipe will have a bright market prospects.
Outdoor water supply pipe: It is expected that by 2015, China’s urban and rural outdoor water supply pipe laying will reach 40,000 kilometers, 40% of which will be applied to plastic pipe, plus the amount of pipe lining method to repair old pipelines, the market demand for plastic pipe in this area is 300,000 tons, including 140,000 tons of polyethylene pipe, 140,000 tons of polyethylene pipe, glass fiber reinforced plastic pipe 20,000 tons.
The development of polyethylene pipe for gas and polyethylene pipe for water supply network will certainly promote each other. China’s energy structure to change to natural gas, west-east gas transmission, the construction of natural gas transmission network across the country, many areas are earthquake-prone areas, should use polyethylene pipe to transport gas. It is expected that by 2005, China’s laying will reach 20,000 kilometers, and 60% will apply polyethylene pipe.
Drainage, sewage pipe: in developed countries, drainage, sewage pipe is the field of plastic applications, the original more polyethylene pipe, in recent years the use of polyethylene pipe is increasing. China’s plastic buried drainage pipe work has just begun, but with the importance of environmental protection, there will be great development. It is expected that by 2005, the demand for polyethylene pipes in this field can reach 40,000 tons.
Communication cable casing: At present, the power cable and cable sheathing tube mainly with polyethylene pipe, while polyethylene pipe is mainly used for communication cable (fiber optic cable) sheathing tube. Now, China has a number of enterprises to produce double-walled corrugated pipe for sheathing, with an annual output of about 30,000 tons, of which about 30% is double-walled corrugated pipe of polyethylene. Fiber optic cable sheathing in a new product called “silicon core tube”, China has a large number of applications in the construction of communications. Every year to build, adjust a large number of highways, the annual amount of silicon core tube supporting this to more than 20,000 tons. It is expected that the market usage of polyethylene pipe in this field will reach 40,000 tons by 2005.
At present, the domestic investment in polyethylene pipe enterprises are still relatively few, have the strength of the enterprise even less, most or small and medium-sized, township enterprises. From the market demand, polyethylene pipe, pipe fittings market prospects, the need to develop a number of strong strength and technical advantages, production in more than 10,000 tons of large enterprises.
Polyethylene pipe fittings for gas have excellent performance, safety and reliability, easy installation, mature technology, no corrosion, long life and other characteristics, can be widely used in indoor and outdoor water supply and drainage, building water supply and drainage, sewage pipes and other broad areas. Especially MDPE/HDPE plastic pipe has many advantages such as heat resistance, aging resistance, high mechanical strength, environmental stress cracking resistance, good creep resistance and proper toughness and stiffness, etc. All its technical indexes can reach the international and relevant standard requirements, and the cost can be reduced by about 12% compared with the steel pipe used now, and the working life can reach 50 years (steel pipe is generally 20 years). Generally 20 years), and low maintenance costs. In China, a large number of residential buildings do not have hot water supply, after banning galvanized pipes, MDPE/HDPE building water supply with plastic pipe is very competitive advantage. In developed countries and regions abroad, it is the product of intercity buried gas transmission pipeline. The possession of plastic pipes in the road has reached more than 90%, mainly using MDPE or HDPE pipes. Foreign efforts are also being made to develop a special polyethylene for hot water pipes without cross-linking polyethylene, which has now achieved initial success for use in areas such as floor heating. In this way, cold water plastic pipes for construction will have a larger market share. There is also a large market for PE pipe in areas other than water supply.