Fire Resistant Aluminum Flexible Air Duct

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Fire Resistant Aluminum Flexible Air Duct


This type of duct is made of reinforced aluminum foil coating.The inner part is filled with highly tensile spiral steel wires to support the duct.It is generally applied on low to medium air velocity with temperature variation system.This product has passed GB8624B1 fire resistant test.

Specification Description

Thickness of aluminum foil


Thickness of PET


Density of cotton


Thickness of cotton


Diameter of steel wire



hot melt adhesive /polyurethane







Technical Target    

Operating temperature range


Max air velocity


Max operating pressure


Meltingpoint of hot melt adhesive


Parametric Table

Number of plies

Max operating temperature


Single ply


single-ply aluminum foil and single-ply PET  film compound

Double plies


single-ply PET to place in double-ply  aluminum foil

Four plies


Doulble plies of single-ply aluminum foil

Six plies


Double plies of double-ply aluminum foil

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Production Flow


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