Class A fire door

1, the highest level of fire separation (firewall, fire compartment, etc.)

2. Doors of crowded places (cinemas, auditoriums, etc.)

3, important warehouse doors (confidential room, archive room, etc.)

4, fire related equipment door (transformer room, power distribution room, etc.)

5, non-fire related important equipment door (air conditioning room, freezer room, etc.)

Class B fire door

1, the safety exit door (closed stairwell, smoke-proof stairwell and front room, etc.)

2, entertainment building hall, room door (KTV, entertainment hall, etc.)

3. Rooms or places with high risk of fire (kitchens in public buildings, warehouses attached to civil buildings, etc.)

4. Doors of rooms (places) used by vulnerable groups (operating rooms, delivery rooms, etc.)

5, the same function control scale partition (hospital nursing units, etc.)

6, equipment room (fire control room, etc.)

7, fire partition wall on both sides of the door and window spacing is insufficient, alternative measures

8, larger than 54m, less than 100m residential, each household has a room door of a refuge function room, and the outside window.

Class C fire door

1, shaft protection (pipe shaft door, etc.)

2, the internal communication door and the door of some equipment rooms open to the outside (transformer and distribution room, etc.)