The fire-resistant and heat-insulating insulation material is wrapped on the galvanized steel plate, covered with a layer of water-resistant and flame-retardant aluminum foil veneer FFR, and then the insulation material is fixed with welding nails. The joints are connected with the same aluminum foil tape to ensure sealing, thus forming a wrapped smoke exhaust duct.
Yingsheng smoke control and exhaust system can meet different fire resistance requirements, reduce fire safety hazards, and is widely used in smoke control and exhaust systems of various buildings.