Steel fire door refers to the use of steel materials to make the door frame, door skeleton and door panel, door if filled with materials, it is filled with non-toxic and harmless to the human body of the fireproof insulation materials, and with fire hardware fittings composed of a door with a specified fire resistance properties
1. Preventing the spread of fire and controlling the wind flow of the underground or building fire safety facilities with fire fighting requirements, usually divided into steel and wooden fire doors;
2. Class A fireproof door with fire resistance limit of 1.5 hours;
3. Class B fire doors, with fire-resistance limit of 1.0 hour;
4. Class C fire door, fire resistance limit 0.5 hours;
5. According to the material, there are wooden fire doors, glass fire doors, steel fire doors and so on;
6. according to the use of function: access control fire door, fire door, indoor fire door, explosion-proof fire door, quick lock fire door, fire door in case of fire, multi-functional fire door and so on;
7. By technology: there are electronic fire doors, etc;
8. According to the installation position of door closer: external fire door and built-in fire door.