In winter, the weather is dry and cold, and various heating equipment are turned into turns. A small solar heater has a power of tens of kilowatts, not to mention a variety of electrical devices that work together. At this time, special attention must be paid to electricity safety. Today it is about fire prevention. Fire doors can play a role in fire prevention and isolation and protect personal safety. Especially in large supermarkets and buildings, fire doors must be installed. What is a fire door? What are the types of fire doors? basic concept Fire doors are doors that meet fire resistance stability, integrity, and insulation requirements over a period of time. Fire doors are doors that meet fire resistance stability, integrity, and insulation requirements over a period of time. It is a fireproof partition with certain fire resistance, such as fireproof partitions, evacuation stairs, rooms, and vertical shafts. Fire door type 1. According to the material divided into wooden fire doors, steel fire doors, steel wood fire doors, other fire doors, etc. Wooden fire doors: Use flame retardant wood or hardwood products as door frames, door leaf frames, door leaf panels. Steel fire doors: Doors, door leaf skeletons and door leaf panels are made of steel materials. If the door leaf is filled with material, it is filled with non-toxic and harmless fire-proof and heat-insulating materials, and it is equipped with fire-proof hardware fittings with a certain fire resistance. Performance of the door. Steel wood fire doors: Manufacture of door frames, door leaf skeletons, and door leaf panels from steel and flame-retardant wood materials or flame-retardant wood products. Fire doors for other materials: use of inorganic non-combustible materials other than steel, fire-resistant wood or flame-retardant wood products, or use of steel, flame-retardant wood, or flame-retardant wood products to make door frames, door leaf skeletons, or door leaf panels. The filling material is filled with fire-proof and heat-insulating material that is non-toxic and harmless to the human body, and is equipped with a door with certain fire-resisting performance composed of fireproof hardware fittings. 2. According to the use of functions, there are access control fire doors, indoor fire doors, explosion-proof fire doors, quick-lock fire doors, and quick fire doors in case of fire; 3. According to the technology, electronic fire doors, built-in fire door closers, multi-function fire doors, etc. 4. Insulation is divided into insulated fire doors (Type A), partially insulated fire doors (Type B) and non-insulated fire doors (Type C); Category A: Fire doors that can meet fire integrity and insulation requirements at the same time. Class B: Fire doors that meet fire resistance integrity and insulation requirements within 0.50 h Category C: Fire doors that meet fire integrity requirements within a specified period of time. Only installing the fire door is not enough. The installation position of the fire door is very important. Generally the fire door is installed in the corridor, safe passage and so on. And these places can not be stacked debris, so as not to block the safety exit, fire doors can not always open. Decoration material knowledge
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