When fire doors must be installed:
1. The equipment room attached to the fixed fire extinguishing device in the high-rise civil building, such as the steel cylinder room, foam station, etc., and the partition door of ventilation, air conditioning room, etc. must be equipped with fire doors;
2. All equipment rooms in the basement and electrical equipment rooms on the ground must be equipped with fire doors;
3. Fire doors must be installed in enclosed stairwells, smoke proof stairwells and their antechambers, and fire elevator antechambers;
4. The distribution room, fire control room and some residential doors are also required to be equipped with fire doors;
5. Fire door must be installed in equipment tube well.