Flat bend for fire-resistant duct

Flat bends for fire-resistant ducts are specialized components designed to maintain the integrity of electrical cable pathways in fire-critical environments. These bends, typically fabricated from galvanized steel or stainless steel, ensure that the duct system can withstand high temperatures during a fire event, preserving circuit integrity for essential safety systems. Key technical parameters include material thickness (often 1.0-1.5 mm), bend radius (matching duct dimensions like 100x50 mm or 200x100 mm), and fire resistance rating (e.g., up to 90 minutes at 1000°C per EN 1366-1). They are used to change direction in duct runs without compromising the fire-resistant seal, often featuring flanged or interlocking connections for secure assembly.

These components are primarily installed in commercial, industrial, and infrastructure projects where fire safety regulations mandate the protection of emergency circuits. Typical applications include power supply routes for fire alarms, emergency lighting, smoke extraction systems, and sprinkler pumps. They are found in electrical rooms, riser shafts, and ceiling voids, integrated into fire-rated containment systems that must comply with standards like BS 8519 or IEC 61537. The bends ensure that the ductwork maintains its structural and thermal performance under fire conditions, preventing collapse or breach that could expose cables to flames.

Subcategories within this category include standard 90-degree bends, 45-degree bends, and custom angle bends for specific routing needs. Key article codes often follow a pattern like FDB-XXXX-YY, where XXXX denotes the duct width and YY the height in millimeters (e.g., FDB-100-50 for a 100x50 mm duct). Other variants include offset bends and saddle bends for complex installations. These codes are typically listed in manufacturer catalogs with detailed dimensional drawings and fire test certifications.

Electric Automation Network offers global express shipping for these critical components, ensuring fast delivery to project sites worldwide. Our engineering team provides personalized technical support, including selection guidance based on fire rating requirements, duct dimensions, and installation conditions. We supply detailed technical datasheets with each article, including material certifications and fire test reports, to support compliance with local regulations. Contact our specialists for assistance with your fire-resistant duct system design and procurement needs.