Fire doors play an important role in life, and the opening direction of fire doors is very important. The "Code for Fire Protection Design of High-rise Buildings" has clearly stipulated that it should be opened in the direction of evacuation. For example, the stairwell should be opened in the direction of the front room of the staircase to facilitate evacuation. In addition, the front room is generally an evacuation place and an evacuation passage. When the fire occurs, the air should be supplied with positive pressure. If it is not installed in the above opening direction, the wind pressure may open the fire door , causing fire and smoke.
4.1 According to the number of door leaves, there are steel single-leaf fire doors and steel double-leaf fire doors.
4.2 According to the structure of the door leaf, there are steel fire-resistant doors with glass inlays, steel fire-resistant doors without glass inlays, steel fire doors with bright windows and steel fire doors without bright windows.
5. Technical requirements
5.1 Materials and accessories
5.1.1 The door frame, door leaf panel and its reinforcement are made of cold-rolled steel sheet. The door frame should be 1.2-1.5mm thick steel plate, the door leaf panel should be 0.8-1.2mm thick steel plate, and the reinforcement should be 1.2-1.5mm thick steel plate. If the reinforcement is provided with screw holes, the thickness of the steel plate should not be Below 3.0mm.
126.96.36.199 The filling materials of door leaf and door frame shall be filled with non-combustible materials.
188.8.131.52 The melting temperature of locks, hinges, latches and other hardware components installed on steel fire doors shall not be lower than 950 ° C.
184.108.40.206 For hinges installed on fire doors, two-way springs shall not be used, and single-door doors shall be provided with door closers.
220.127.116.11 There must be a cover seam between double doors, and door closers and sequencers must be installed.
18.104.22.168 The door frame should be provided with a sealing groove. Seals made of non-combustible material shall be embedded in the groove 避难间防火门可不做吗？ Previous: Can you not make fire door in refuge? Can the fire door in the shelter be dismantled?
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