Selection of various ventilation ducts

Ventilation ducts are used to deliver air (delivery and return air systems) and to eliminate harmful gases (exhaust systems). The following is a few ventilation duct material analysis:

Ordinary cold-rolled steel: cheap, easy to corrosion, the general ventilation with air, return air, fresh air, exhaust, smoke exhaust system.

Galvanized steel: Corrosion resistance compared to just run, but in the process of metal temperature and humidity requirements of the high return air system, ultra-clean system in the efficiency of filtration, easy to fall off, the paint is not easy attachment To the high efficiency filter between the air supply system.

Aluminum plate: can not afford to dust, expensive, 30 purification system after the high efficiency filter air supply system.

Hard PVC plate: smooth surface, can not afford to dust corrosion-resistant, more expensive, easy to aging, high efficiency filter after the air duct, surface treatment workshop exhaust system.