Civil air defense door is the door at the entrance and exit of civil air defense project. The classification of civil air defense doors is quite clear, including ordinary single and double doors to protect sealed doors and sealed doors, and also single and double doors to protect sealed doors and sealed doors.
Fire doors are any combination of fire doors, doors, hardware and other accessories, which can provide a certain degree of fire protection for openings.
2. Different functions
Civil air defense, also called civil air defense, is a common word in the world. It is an activity of the government to mobilize and organize the masses, take measures to prevent air strikes, resist disasters and provide relief, and implement disaster prevention, mitigation and rescue operations. Civil defense doors belong to civil defense protection equipment.
Fire door refers to the door that can meet the requirements of fire stability, integrity and heat insulation in a certain period of time. It is a fire zone with a certain fire resistance limit, located in fire zones, evacuation staircases, shafts and so on.
3. Different applications
The civil air defense door has simple structure, reliable operation and convenient maintenance, and is suitable for the entrances and exits of various civil air defense projects. However, because it has a threshold, it has been rarely used in projects where people and cars come and go frequently. For example, underground shopping malls that combine peacetime and wartime have been replaced by life threshold doors or landing doors with the same size and load level.
The fire door has the characteristics of smooth and flat surface, elegant appearance, flexible opening, firmness and durability, convenient use, safety and reliability. There are many specifications of fire doors, except the hole door size specified by the national unified modular system for doors, windows and holes (GB J2-73 Unified Modular System for Buildings), which can also be customized according to users' requirements.
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