1. Fiber fabric composite duct is also often called bag composite duct, fabric composite duct, fiber fabric composite duct, fiber fabric air distributor. At present, a new type of composite duct, a flexible air distribution system made of special fibers (Air Dispers replaces traditional composite duct, air valve, diffuser, insulation material, etc.) is a kind of air supply terminal system. The unique outlet mode of fiber penetration and jet can uniformly distribute the outlet end system of air supply. It has surface air outlet, large air volume, no sense of blowing; uniform distribution of overall air supply; condensation prevention; easy cleaning and maintenance, health and environmental protection; beautiful and high-grade, colorful, personalized prominent; light weight, roof load can be neglected; system operation is quiet, improve environmental quality; simple installation, shorten the project cycle; flexible installation, reusable; system cost-saving, cost-effective varieties. Advantages.
2. Galvanized sheet composite air duct: one of the earlier composite air ducts, which is made of galvanized sheet steel, is suitable for conveying general gas with low moisture content. It has the characteristics of easy rusting, no heat preservation and noise elimination, and long production and installation period.
3. Composite glass fibre board composite air duct: In recent years, the type of composite air duct is made of centrifugal glass fibre board as the base material, inner glass silk cloth, outer moisture-proof aluminium foil (imported plate is coated with thermosensitive black acrylic polymer, outer layer is thin grain cloth/aluminium foil/kraft paper) and dried with fire-proof adhesive, then cut, groove, bond and reinforcement, according to the cross-section ruler of composite air duct. The appropriate reinforcement measures should be adopted for the size of inch and wind pressure.
4. Inorganic FRP composite duct: The new type of composite duct is made of glass fiber reinforced inorganic material. It is non-flammable, corrosion resistant, heavy in weight, hard but brittle. It is easy to deform and crack under the influence of self-weight. It has no heat preservation and noise attenuation. It has a long production and installation period.