The vent-pipe , used for ventilation, usually have round or square shapes
According to application ,
Ventilation duct is generally: purification system return duct, central air conditioning duct, industrial air supply and exhaust duct, environmental protection system suction and exhaust duct, mine gas drainage pipe, mine coated duct;Fire flue ventilation pipe, etc.
According to the shape points
Ventilation duct is generally: round, rectangular, spiral, corrugated and so on.
light weight, tasteless, flexible and compressible,high strength; Can be bent arbitrarily, no hard elbow, can reduce wind resistance; Integrated molding, small air leakage; Corrosive gases such as acid and alkali, Long service life, etc.