- Product description
- Main functions
- Basic Parameters
fire doors commercial Core Performance Requirements
Fire Resistance Performance (The Most Critical Requirement)
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
fire doors commercial Key Component Requirements
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.
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.
Fire Integrity: Prevents collapse, penetrating cracks, or holes during a fire, stopping flame penetration.
Thermal Insulation: The average temperature rise on the unexposed face does not exceed 140°C, and the maximum point temperature rise does not exceed 180°C, preventing heat transfer from igniting materials on the other side.
ire 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
