What is the specific working principle of composite fire-resistant ductwork?

One, its inner layer is made of stainless steel. This material does not release toxic gases at high temperatures, thereby effectively preventing the spread of fire. Additionally, stainless steel boasts excellent corrosion resistance, preventing rust and corrosion, ensuring a long service life.

The middle layer is the important insulation layer in the composite fire-resistant duct. Made of glass fiber, this layer boasts excellent insulation properties, effectively separating high-temperature smoke and air, preventing the air from being contaminated by the smoke and experiencing heat loss. Consequently, even in the event of a fire, it can prevent the spread of flames for a certain period of time, allowing for more time to extinguish the fire.

The fire protection layer is the outer layer of the composite fire-resistant duct, akin to a film coating. This coating can spontaneously expand at high temperatures, forming a sealed fire protection layer that effectively isolates the heat source from the environment, thereby safeguarding the equipment or materials inside the duct.