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Fire-resistant duct
Fire-resistant ducts, also known as fire-rated ductwork or smoke extraction ducts, are critical components in building services and industrial ventilation systems designed to maintain structural integrity and prevent the spread of fire, smoke, and hot gases through HVAC pathways. These ducts are constructed from specialized materials such as gal...
Fire-resistant ducts, also known as fire-rated ductwork or smoke extraction ducts, are critical components in building services and industrial ventilation systems designed to maintain structural integrity and prevent the spread of fire, smoke, and hot gases through HVAC pathways. These ducts are constructed from specialized materials such as galvanized steel with intumescent coatings, calcium silicate boards, or composite panels that provide passive fire protection. Key technical parameters include fire resistance ratings (e.g., EI 30, EI 60, EI 120, EI 180) indicating the duration (in minutes) the duct can withstand fire exposure while maintaining insulation and integrity, temperature classes (e.g., 400°C, 600°C, 1000°C), pressure classes (e.g., P1, P2, P3), and leakage classes (e.g., L1, L2, L3). They are available in circular or rectangular cross-sections, with diameters ranging from 100 mm to 2000 mm or custom dimensions, and wall thicknesses from 0.6 mm to 2.0 mm depending on the rating. Accessories include fire dampers, support brackets, sealing gaskets, and expansion joints. These ducts are essential for compliance with international standards such as EN 1366-1, EN 13501-4, and BS 476 Part 24, ensuring safe evacuation routes and protecting critical infrastructure.
Fire-resistant ducts are primarily installed in commercial buildings, industrial facilities, tunnels, parking garages, hospitals, data centers, and high-rise residential structures. They are used in smoke control systems, stairwell pressurization, kitchen exhaust systems, and ventilation for emergency generators or chemical storage areas. In industrial settings, they serve in oil and gas plants, chemical processing units, and power generation stations where fire hazards are elevated. The ducts integrate with fire alarm and sprinkler systems to maintain compartmentation and prevent fire propagation through ductwork, which is a common failure point in building fires.
Our catalog includes several subcategories of fire-resistant ducts: circular fire-resistant ducts (e.g., model FRD-C-100 to FRD-C-2000), rectangular fire-resistant ducts (e.g., model FRD-R-200x200 to FRD-R-2000x2000), and pre-insulated fire-rated ducts (e.g., model FRD-PI-100 to FRD-PI-2000). The article codes typically follow a pattern: FRD-[Shape]-[Dimension]-[Fire Rating], where Shape is C for circular or R for rectangular, Dimension is the nominal diameter or width in mm, and Fire Rating is the EI class (e.g., EI60, EI120). For example, FRD-C-500-EI60 indicates a circular duct of 500 mm diameter with a 60-minute fire resistance. We also stock fire dampers (e.g., model FD-100 to FD-2000) and support systems (e.g., model FDS-100 to FDS-2000) to complete the installation.
Partnering with Electric Automation Network ensures access to a comprehensive range of fire-resistant ducts with real-time pricing and global express shipping. Our team of specialized engineers provides technical support for product selection, system design, and compliance with local fire safety regulations. We offer detailed technical documentation, including installation manuals and test certificates, for every article. Whether you need a single duct section for a retrofit or a full system for a new build, we deliver with speed and precision, backed by decades of industrial automation expertise.
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