With the development of economy, the use of central air-conditioning has increased year by year, and the quality of exhaust and supply air supporting products has been continuously improved. Spiral air ducts are first used in some foreign-funded and joint ventures. The characteristics of spiral air duct, such as no welding, no air leakage, no water leakage, low noise, small ventilation resistance, low cost, firmness and beauty, are gradually recognized by Chinese customers.

The aluminum alloy pipes of composite central air-conditioning also have relatively low requirements for installation accuracy, which can improve the installation speed of central air-conditioning ventilation pipes. Ventilation duct system is a kind of facility established for air circulation and reducing harmful substances. The plates and other materials used for the fabrication and installation of the air duct shall comply with the design and the current national standards.

Aluminum alloy pipeline purification system supply and return air pipe, central air conditioning ventilation pipe, mining gas drainage pipe, industrial air supply and exhaust ventilation pipe, environmental protection system suction and exhaust pipe, mining rubber coated cloth air duct, etc. It is mainly used in the heat dissipation and dust removal of factory buildings, the purification system of pharmaceutical and food workshops, and the air supply of central air conditioners in shopping malls, hospitals and office buildings.

The aluminum alloy pipes of composite central air-conditioning are generally constructed by hand and do not require special processing equipment. Therefore, they are particularly suitable for small site construction such as household central air-conditioning. It is also very convenient to use composite materials to make large and small pipes, elbows and other accessories on site, so the construction speed is fast and the requirements for construction personnel are relatively reduced. In addition,