As a vital fire prevention facility in a building, fire doors have extremely strict technical requirements, which are related to the safety of people's lives and property and the effective implementation of rescue when a fire occurs.
In terms of material selection, fire doors should be made of non-combustible or flame-retardant materials, such as steel, steel-wood composite, aluminum-magnesium alloy, etc. are common choices. Fire door panels must use fireproof glass or fireproof coatings, of which the fire resistance limit of fireproof glass is not less than 1 hour, and the fireproof coating must also meet the corresponding requirements. In addition, door frames, door leaves, sealing strips and other components must also use non-combustible or flame-retardant materials to ensure the overall fireproof performance of the fire door system.
In terms of structure, fire doors must have sufficient strength and rigidity to withstand a certain impact force and pressure, and ensure that they will not be easily deformed in a high temperature environment of a fire. It should also be equipped with accessories such as door closers and locks, which can automatically close when a fire occurs to prevent the spread of the fire. At the same time, a safe escape route is provided to facilitate the rapid evacuation of personnel, and the fireproof sealing strip is an important line of defense to prevent the penetration and spread of flames and smoke.
In terms of performance requirements, fire doors must have good performance. Its fire resistance limit is divided into three levels: Class A, Class B, and Class C. Class A is not less than 1.5 hours, Class B is not less than 1 hour, and Class C is not less than 0.5 hours. It must also have good smoke isolation performance, and the smoke isolation performance of fireproof glass must meet the standards. At the same time, it must have certain waterproof and corrosion resistance to extend the service life.
Fire doors must also clearly mark the fire rating, production date, manufacturer and other information on the outer surface, and be equipped with certificates, inspection reports and other documents to ensure that the product meets national standards. During installation, it must be carried out strictly in accordance with the product manual to ensure firmness and complete and consistent components. After installation, functional testing must be carried out. Only when all aspects meet the requirements can fire doors play their due role in the event of a fire and protect people's lives and property safety.