The total output of air conditioners in China has exceeded 10 million units, 26 million units in 2001 and 30 million units in 2002, and the current production capacity in China is about 40 million units. In order to adapt to the development of the air-conditioning industry, by the end of 2000, the production capacity of copper coils and air-conditioning pipes in China had increased to 280,000 tons, an increase of about 4 times compared with 1990. Due to the stable performance, good uniformity, high blanking time and high yield of copper coils, most air conditioner manufacturers use copper coils with a coil weight of 100-200 kg. In order to further improve the thermal efficiency and energy-saving level, and manufacture high-efficiency, energy-saving and environment-friendly air conditioners, it is necessary to use internally threaded copper coil tubes. Compared with bare tubes, the inner surface area has increased by 2 to 3 times.

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In addition, because the internal thread makes the medium form a turbulent flow and speed up its flow rate, the thermal conductivity is greatly enhanced compared with the smooth pipe of the same specification, which increases the thermal efficiency by 20%-30% and saves energy by 15%. By the end of 2002, the usage of internally threaded copper tubes by air conditioner manufacturers had reached 50% of the total usage of copper coils, and it was estimated to exceed 60% in 2003 (the usage of internally threaded tubes by major air conditioner manufacturers in 2003 could reach 70%), and will reach 80% by 2005. That is to say, in 2001, 2002 and 2005, the total demand for copper coils of air conditioners was 60,000 tons, 80,000 tons and 150,000 tons respectively, of which the total demand for copper coils with internal threads will reach 30,000 tons, 50,000 tons and 120,000 tons. Entering overseas markets has become a choice for enterprise development. At present, from the perspective of market supply and demand, the supply of copper coil pipes in China has exceeded demand.

The year 2002 was the most competitive year in the history of China's copper pipe coil market. On the one hand, the continuous development of China's air-conditioning industry has driven the continuous growth of China's copper tube consumption, providing a huge market space and development opportunities for copper coil tubes; The quality and technical requirements of copper pipes are getting higher and higher, and the market pattern of oversupply promotes the competition in the copper pipe market to escalate day by day, forcing all production companies to continuously improve the level of technical equipment and find a way out in terms of industrial scale and product quality. The market has become the configuration of China. The main body of copper pipe production factors. Experts predict that in the next 10 years, while the output is increasing rapidly, there will be corresponding changes in the varieties, production technology and equipment of copper pipes in China.

Among them, the air-conditioning refrigeration heat dissipation pipes will gradually realize all internal threads, and develop in the direction of small diameter, complex tooth shape, high heat dissipation, and high cleanliness. breakthrough progress. At the same time, the technology and equipment level of China's copper pipe production will also be comprehensively improved, that is, the horizontal casting-planetary rolling-disc drawing and upward cold processing methods will attract the attention of more enterprises. Floor heating pipe refers to a pipe used as a low-temperature hot water circulation carrier in a low-temperature hot water ground radiation heating system (referred to as floor heating).