Extra-large Fireproof Door

Extra-large fireproof doors refer to fireproof doors with a width exceeding 2.1 meters and a height over 2.3 meters. They are made of thickened steel plates and have built - in steel dragon skeletons, which make the door body more solid and less prone to deformation. They use new - type heat - insulating and flame - retardant materials and fireproof boards, and are inlaid with fire - expanding strips. In the event of a fire, they can effectively curb the spread speed and scope of the fire and seal the gaps where smoke spreads, providing valuable time for the evacuation of people in the fire scene and rescue work.

Extra-large fireproof doors can be selected in different specifications according to the size of the door opening. They are mainly used in large - scale hotels, convention and exhibition centers, water conservancy and hydropower stations, commercial centers, exhibition halls, large - scale industrial workshops, high - rise buildings, etc. Extra-large standard fireproof doors have strict manufacturing regulations and equipment standards. Currently, only steel fireproof doors are allowed to be produced in extra - large sizes in terms of product materials, and other composite products cannot be made. The products are equipped with special fireproof hardware for extra - large fire doors, which are sturdy, durable and have stable performance. Overall, they meet the requirements of the GB_12955 - 2008 Fireproof Door Specification.