What is a Fireproof Air Duct? Safety Protection Solutions for HVAC Systems
In designing ventilation and air conditioning systems (HVAC), fire safety is a factor that cannot be ignored, especially in high-rise buildings, commercial centers or factories. In particular, fireproof ducts are an important component that helps prevent fire and smoke from spreading along the duct system when a fire or explosion occurs.
So what is a fireproof duct, what is it made of, and how does it work? Join Eusteel to find out the details right below.
1. What is a fireproof air duct?
Fireproof ducts are air ducts specifically designed to withstand high temperatures for long periods of time, helping to prevent the spread of fire and smoke through the duct system when a fire occurs.
This type of pipe is often installed at:
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Areas with high requirements for fire safety (corridors, basements, technical rooms…)
- Location through floors, through walls between floors
- Corridor smoke extraction system, basement smoke extraction system
2. Structure and materials of fireproof air ducts
Depending on design requirements, fireproof ducts can come in many different forms, but generally include:
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Galvanized or stainless steel corrugated iron layer: Is the shell that bears the force and shapes the pipe.
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Outer layer of fireproof material: Usually ceramic wool, mineral wool, or special coating material with heat resistance from 250°C to over 1000°C.
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Outer layer made of steel mesh or heat-resistant fabric: Increases aesthetics and holds the insulation tightly.
3. The main function of fireproof air ducts
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Prevents fire from spreading through the duct system in case of fire
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Block toxic smoke from entering other areas
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Extend escape time and support rescue work
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Comply with fire protection standards according to regulations of the Ministry of Construction and the Fire Police
4. Classification of fireproof air ducts
🔹According to fire resistance time:
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Air ducts are fireproof for 60 minutes
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Air ducts are fireproof for 90 minutes
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Fireproof air duct for 120 minutes(Depending on the construction level and installation location, the fire resistance time is selected accordingly)
🔹 According to the shape of the air duct:
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Square air duct
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Round air duct
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Fireproof soft air duct (soft air duct with special insulation layer)
5. Technical standards need to be noted
When selecting and installing fireproof air ducts, it is necessary to ensure the following standards:
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TCVN 5687:2010 – Ventilation – Air conditioning – Design regulations
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QCVN 06:2022/BXD – National technical regulations on fire safety
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Fire resistance testing certificate from a unit licensed by the Ministry of Public Security
6. Eusteel fireproof air duct – Safe for all projects
At Eusteel, we provide fireproof air ducts that meet inspection standards, ensuring construction and operation quality. Products are diverse in size, type, and heat resistance, suitable for all types of projects: high-rise buildings, hospitals, factories, shopping centers…
