Fire-resistant ductwork is a type of ventilation tube made from non-combustible and fire-resistant materials, capable of meeting certain fire resistance requirements. It is primarily used in buildings for systems related to smoke extraction, positive pressure air supply, and air conditioning supply to refuge areas, all for the purpose of life-saving and safety assurance. The materials commonly used for fire-resistant ductwork typically include:

Metal materials, such as galvanized sheet metal. Fire-resistant ducts made from this material offer excellent fire resistance and corrosion resistance, with a service life of over 30 years.

Non-metallic materials, such as rigid polyvinyl chloride (PVC) and glass fiber, which also possess excellent fire resistance and high-temperature resistance, are commonly used to manufacture the inner and outer protective layers of fire-resistant ducts.

The surface layer is made of non-flammable materials and the inner panel is insulated. This duct combines the advantages of non-flammable and insulating materials, offering excellent heat insulation and fire resistance.

Additionally, the materials used for fire-resistant ductwork include inorganic materials such as glass fiber reinforced plastic and ceramics, which also possess excellent fire resistance and high-temperature tolerance. The choice of materials should be based on the specific application environment and fire protection requirements to ensure that the ductwork can maintain normal operation for a certain period during a fire, thereby safeguarding personnel safety and minimizing property loss.