Wide application range of spiral duct fan

Spiral duct fan is a machine for producing spiral duct. Spiral air duct, also known as spiral slit thin-walled pipe, was first used in the military industry of western countries, such as warships, ship platoon (air supply) system, and later used in trains, subways, mines and other civil facilities. By 2000, according to statistics, 95.6% of the U.S. office buildings, shopping malls, subways, and 72.5% of the residential buildings in the United States have used spiral ducts for central air conditioning.

Air supply, including ventilation, such as fresh air supply and exhaust, has a wide range, such as the air in factories, workshops and production sites. Due to the generation of harmful gases, it needs to be discharged outdoors, and the outdoor air needs to be transported indoors. At this time, the use of large flow and low pressure air pipeline, spiral air duct is applicable, generally use galvanized iron pipe, corrosive and particularly humid places use stainless steel pipe.