- Product description
- Main functions
- Basic Parameters
Fire doors play a critical role in protecting lives and property by compartmentalizing fire and smoke, providing safe escape routes, and allowing time for emergency response. Understanding where fire doors are mandated is essential for architects, builders, facility managers, and business owners to ensure compliance with building and fire safety codes. While specific regulations vary by country and local jurisdiction, the following areas generally require the installation of certified fire-rated doors.
Commercial Fire Doors Material 
Wooden Fire Doors: Use high-quality timber or fire-resistant panels treated with flame retardants. Door frames, door leaf skeletons, and filler materials must all be fire-treated.
Steel Fire Doors: Door frames and leaf panels are made of cold-rolled steel sheets, filled with non-toxic, harmless fire-resistant and thermal insulating materials (e.g., perlite boards, rock wool).
Commercial Fire Doors Hardware
Fire Lock: Must use fire-rated locks, typically requiring a fire resistance time matching the door leaf. Fire doors on escape routes should be equipped with panic bar (or push-pad) type fire exit hardware, allowing egress from inside with a single action (push or pressure) without a key or tool.
Fire Hinges: Must use fire-rated hinges. The quantity is configured based on door leaf size and weight (usually no less than 3), with load-bearing capacity ensuring the leaf does not deform or detach during a fire.
Fire Door Closer: Normally closed fire doors must be equipped with automatic closers, ensuring the door leaf closes automatically and reliably to a sealed state after being opened. Special areas (e.g., hospital corridors) may use coordinated closers.
Door Coordinator: Used for pairs of doors or multi-leaf fire doors to ensure leaves close in the correct sequence for proper sealing.
Fire Seal (Intumescent Strip): Fire-rated intumescent seals must be installed in the gaps between the door frame and leaf. Upon exposure to high heat in a fire, the seal expands rapidly (multiple times its size) to block gaps and prevent smoke penetration.
Commercial Fire Doors Common Application Locations (Reference)
Class A Fire Doors: Used for openings in fire walls between compartments, doors to stairwells and lobbies, doors to critical equipment rooms (e.g., fire pump rooms, electrical rooms, boiler rooms).
Class B Fire Doors: Used for doors from corridors leading to lobbies or stairwells, entrance doors to high-rise residential units (if required), access doors for vertical shafts (e.g., cable/pipeline shafts) providing compartmentation between floors.
Class C Fire Doors: Mainly used for inspection doors on vertical pipe shafts (e.g., for utilities, ducts) to prevent vertical flame spread.
Commercial Fire Doors Routine Maintenance
Fire doors and their components (closers, hinges, seals, etc.) must not be damaged, removed, or altered.
No ordinary bolts, locks, or other devices impeding closure should be added to the door leaf.
No thresholds, steps, or stored items should obstruct passage or closure in the doorway area.
Regular inspections should ensure closers function correctly, doors close smoothly, and sealing is effective.
Fire doors are critical facilities for fire compartmentation in buildings. Their fundamental requirements encompass fire integrity thermal insulation sealing performance opening/closing functionality and signage management.
Fire doors are classified into three grades based on their fire resistance rating which must be tested by nationally certified testing institutions:
Class A Fire Door: Fire resistance limit ≥ 1.50 hours
Class B Fire Door: Fire resistance limit ≥ 1.00 hours
Class C Fire Door: Fire resistance limit ≥ 0.50 hours
