1. Where is the steel fire exit door usually installed?
Steel fire doors are usually installed in evacuation stairwells, front rooms, duct wells, electrical rooms, equipment rooms, evacuation passages and other places.
2. Where is the normally open fire rated door installed?
Normally open fire doors are usually installed in places with a large flow of people, such as schools, large office buildings, shopping malls, hospitals and other areas. The crowds in these areas are very concentrated and need to be evacuated in time in the event of a fire. Therefore, a normally open fire door should be installed, which will automatically close when a fire occurs to isolate the spread of fire and smoke.
3. Where is the normally closed fire door installed?
Normally closed fire doors are generally installed in places with a small number of people. For example, the evacuation stairwells of high-rise residential buildings are rarely used by people at ordinary times, so the fire doors of the stairwells will be set to be normally closed. Even if people pass through, the door closers and sequencers (double-leaf doors) can be opened by themselves. closure.
