Sulong ventilation ducts can be used in many fields: Metro tunnel, Highway, Railway, Hydropower Station, Underground mine project, Immersed tube tunnel and so on. We are committed to work closely with customers and develop tailored optimizing ventilation solution. We believe that Sulong ventilation technology is a good choice for all kinds of infrastructure construction projects.
In April 2016, Sulong became the gold supplier of ventilation tubes for Guangzhou Metro construction projects. To ensure the Metro tunnel construction in safety, Sulong has already produced more environmental friendly and lower air leakage rate PVC Ventilation Ducts. This kind of ventilation tubes are light weight to reduce the labor costs, but also have the advantages of strong compressive and easy installation, and there are resistance against flame, anti-static, cold, UV-light, etc.
Sulong ventilation ducts have positive flow duct and negative flow duct. Positive flow duct includes lay flat duct, oval duct and flexible duct, its diameter can be made from 200mm to 3000mm and its length from 1m to 300m. Negative flow duct also called semi-rigid ventilation duct, its diameter can be made from 200mm to 2500mm, its length from 1m to 20m. Every two sections are connected with industrial zipper, steel ring or Velcro.