Fire doors generally located in the following parts. (1) closed staircases, leading to the walkway; between a closed elevator, the new national standard for fire doors fire resistance requirements through forward room and hallway leading to the door of the front room. (2) Cable wells, tube wells, flue, garbage Road and other inspection door vertical pipe wells. (3) into the fire district, district construction area of ??control established by the firewall and the fire wall of the door. When building a firewall or fire doors have difficulty, use fire shutter doors in place, while the water curtain must be protected. (4) specification (such as GB50045-95 "fire protection design of tall buildings") or special design requirements of fire and smoke in the household door wall. For example: set up within the senior civil construction of fixed fire extinguishing apparatus equipment chamber (cylinder chamber, foam stations, etc.), ventilation, air conditioning, etc. room partition door shall be Class A fire doors; people often stay or combustible more Basement room door on the wall should be used Class A fire doors; due to conditions, the fuel must be arranged in the high-rise buildings, gas boilers, fuel oil can power transformers, filled with an oil of high voltage capacitors and switches, Door on the room wall should use Class A fire door. There are special requirements for the design of household shall be fireproof doors, such as fire control command center, archive library, warehouses and other valuables household door, usually selected or Class B fire doors. Household door high-rise residential buildings, often using fire security door. GB12955-2008 for fire door fire doors fire resistance requirements of fire fighting equipment is an important part of society in an important part of fire prevention, fire doors should be installed fire door closers or set so that normally open fire doors in the event of a fire It will automatically close the doors of the door closing device (except for those with special parts, such as tube wells doors, etc.). That is in addition to some special parts, such as the need to install tube wells door closers, the other parts are required to install fire doors behind closed doors. 

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