Class A fire-resistant door

High-level fire separation (firewalls, fire partitions, etc.)

2. Doors in densely populated areas (cinemas, auditoriums, etc.)

3. Key storage room doors (secure rooms, archives, etc.)

Fire-related equipment room doors (transformer rooms, switchgear rooms, etc.)

5. Non-fire-related critical equipment rooms (such as air conditioning rooms, refrigeration rooms, etc.)

Section 2: Class B Fire Door

1. Emergency exit doors (enclosed staircases, smoke staircases, and vestibules, etc.)

2. Entertainment building room doors (KTV, amusement halls, etc.)

3. High-risk fire hazard rooms or areas (kitchens in public buildings, auxiliary storage rooms in residential buildings, etc.)

4. Rooms (locations) for vulnerable groups (birthrooms, etc.)

5. Same-function control scale partition (nursing unit sections, etc.)

6. Equipment Rooms (Fire Control Rooms, etc.)

7. Alternative measures when the spacing between doors and windows on either side of a fire-resistant partition wall is insufficient.

Units larger than 54m² and smaller than 100m² feature a door to a refuge room and an outward-opening window for each household.

Section 3: Grade C Fireproof Door

1. Wellhead Protection (Casing Doors, etc.)

2. Interior doors and doors leading to outdoor equipment rooms (transformer rooms, etc.)

Section 4: Installation Requirements for Fire Doors

1. Under normal circumstances, fire doors should open in the direction of evacuation, and fire doors should be manually opened from either side after closing.

2. Fire doors should be equipped with door closers, and sequential operators should be installed for double and multiple-leaf fire doors.

Ensure that fire doors are equipped with control, signal feedback devices, and on-site manual control devices that can automatically close the door leaf during a fire, in accordance with the product manual requirements.

Fire door electric control devices must be installed in accordance with design and product specifications.

Fire-rated latches should be installed on the fixed side of the door leaf on double-leaf or multi-leaf doors.

The fire-resistant seals installed in the gaps between the door frame and door leaf, as well as between door leaves, should be securely and intact.

Fire doors installed near expansion joints should be mounted on the side with more floors, and the door leaf should not cross the expansion joint when opened.

8. The steel fire door frame should be filled with cement mortar. The frame should be securely connected to the wall using pre-buried steel parts or expansion bolts, with the spacing between fixing points not exceeding 600mm.

The overlap size between the fire door leaf and frame should not be less than 12mm.

10. The gap between the door leaf and the door frame of the fire-resistant door should comply with the following specifications:

The gap between the door leaf and the door frame on the hinge side should not exceed the size tolerance specified in the design drawings.

The clearance between the door leaf and the door frame on the locking side should not exceed the size tolerance specified in the design drawings.

③ The gap between the door leaf and the top frame should not exceed 3mm.

④ The gaps between the panels of double-leaf or multi-leaf doors should not exceed 3mm.

⑤ The gap between the door leaf and the lower frame or the floor should not exceed 9mm.

⑥ The gap between the door leaf and door frame on the mating surface, as well as on the hinge side, lock side, and top frame mating surface, should not exceed 3mm.

Upon completion of the fire door installation, the door leaf should operate smoothly, without any rebound, warping, jamming, or poor closure.

In general, the opening force of fire door leaves should not exceed 80N, unless otherwise specified.

Fifth, the debugging requirements for fire doors.

1. Fire doors should automatically close when manually opened from either side. When equipped with a signal feedback device, the open/close status signal should be transmitted to the fire control room.

Ensure that fire doors are kept open. In the event of an alarm from any fire detector on either side, the door should automatically close and the closure signal should be fed back to the fire control room.

3. Fire doors should remain open. Upon receiving a manual closing command from the fire control room, they should automatically close and the closing signal should be fed back to the fire control room.