Ventilation ducts are metal and non-metallic pipes for ventilation and air conditioning works in industrial and civil buildings and are a municipal infrastructure for air circulation and reducing the concentration of harmful gases. [1] Duct manufacturing and installation of the plate, profiles and other major finished materials, should meet the design and related products, the existing national standards, and application of factory inspection certificate, the material approach should be based on the current national standards for acceptance.
Ventilation duct
Ventilation ducts are a municipal infrastructure that allows air to circulate and reduce the concentration of harmful gases. Ventilation pipe, duct production and installation of the plate, profiles and other major finished materials, should meet the design and related products, the existing national standards, and application of factory inspection certificate, the material approach should be based on the current national standards for acceptance. Ventilation pipe by material points: generally: steel duct (ordinary steel), galvanized sheet (white iron) duct, stainless steel ventilation pipe, FRP ventilation pipe, plastic ventilation pipe, composite ventilation pipe, color steel sandwich insulation board ventilation pipe , Double - sided aluminum foil insulation ventilation pipe, single - sided Caigang insulation duct, coated cloth ventilation pipe (such as mine hairdryer), mining plastic ventilation pipe, etc.