Fire-rated Duct Board
Fire Ducts · Verified Fire Resistance
Fire-rated duct boards are specialized magnesium inorganic fire boards used to build smoke-exhaust ducts and fire-resistant duct encasement. They meet building fire-code requirements for the fire resistance of smoke control systems — a critical material for tunnels, underground spaces and public-building fire engineering.
Standards
Specifications
| Item | Value |
|---|---|
| Reaction to fire | A1 non-combustible[GB 8624-2012] |
| Fire resistance | Per duct-system fire resistance test report[GB 55037-2022][Class A1 Non-combustible Fire Test Report] |
| Applicable systems | Smoke-control ducts; fire encasement of ventilation ducts |
| Thickness | Selected per fire resistance; typically 9–20mm |
| System support | Flange, stud and installation details provided |
Applications
Testing & Certifications
Class A1 Non-combustible Fire Test Report
Nationally accredited fire-building-materials testing body
Certificate number and scan will display once company credentials are uploaded; stamped copies available on contract.
Fire Protection Product Certification
Fire product conformity assessment body
Certificate number and scan will display once company credentials are uploaded; stamped copies available on contract.
FAQ
What is the fire resistance duration of the duct board?+
Fire resistance depends on board thickness, assembly and installation details, and must be verified by full duct-system fire tests. Provide your project's required fire resistance duration and we will supply the matching assembly details and test documentation.
Why must fire ducts use Class A1 boards?+
Smoke-control systems are life-saving egress paths during fires. GB 55037-2022 sets strict requirements for duct material reaction to fire. Class A1 materials contribute no fuel and no flame spread, preserving duct integrity in a fire.
Do you provide installation details?+
Yes — we provide detail drawings for duct fabrication, flange connections, stud fixing and penetration sealing, plus on-site technical support for first-section mock-up acceptance.
Can it be used in tunnel projects?+
Yes. Tunnel fire ventilation demands high fire resistance and moisture performance; magnesium duct boards are Class A1 and moisture-proof, used in underground spaces and tunnels. Technical consultation is available per project.
How is fire-rated duct board priced?+
Pricing is based on thickness, quantity and region. Submit a project inquiry with the required fire resistance and quantities — we provide both material pricing and system recommendations.
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