On the Concept and Function of Fire Doors

Fire doors refer to doors that can meet the requirements of fire resistance stability, integrity, and thermal insulation within a certain period of time. It is a fire-resistant partition located in fire compartments, evacuation staircases, vertical shafts, etc.
In building construction, dedicated doors are used to isolate fire sources and play a huge role in firefighting work. In the event of a fire, people can use fire doors to obtain escape opportunities.
Fire doors not only have the function of ordinary doors, but also have the function of preventing the spread of fire and smoke, which can prevent the spread of fire for a certain period of time and ensure personnel evacuation.
The fire prevention time of fire doors is mainly determined by the fire prevention board. In this regard, the fire prevention board used for Class A fire doors generally has better performance than the fire prevention board used for Class B fire doors, so the overall performance is stronger than that of Class B fire doors. In addition, Class A fireproof doors are particularly suitable for occasions that require fine grinding before electroplating, excellent vibration, mirror polishing of hand tools, mirror polishing of electric heating tubes, etc., such as vibration polishing of various furniture hardware accessories, cutting polishing of hand tools, surface vibration polishing of daily products, and self painted accessories.
Materials with door frame function in Class A fire doors can be flexibly customized according to customer needs due to their door frame specifications, making door opening size design more convenient, labor-saving, and time-saving.