The function and application field of fire - proof steel door

    Fireproof steel door is a door that can meet the requirements of fire stability, integrity and heat insulation within a certain time. It is located in the fire zone, the evacuation stairwell, vertical shaft and so on have certain fire resistance fire separation.

    In addition to the ordinary door, fire door has the effect of preventing the spread of fire and the diffusion of smoke. It can prevent the spread of fire and ensure the evacuation of people.

    Fire door is one of the measures of building fire separation, usually used on fire walls, stairway entrance or pipe well openings, requirements can be separated smoke, fire. Fire door is very important to prevent the spread of smoke and fire and to reduce the loss.

    Fire doors are divided into open fire doors and open fire doors according to the open state. The normally closed fire door is normally closed under the action of a closed door. Thus, when a fire breaks out, it can prevent the fire from spreading. Normally open fire door is in the open state under the action of door closers. When a fire occurs, the automatic release switch is automatic, and the fire shutter is closed under the effect of the door closers and the shunter.

    Fire passages are squeezed: some become "storeroom" and some even become dog rings.

    Recently, a high-rise residential building in the provincial capital, kaixuan city, suffered a fire, which caused the residents to escape from the fire. And it happened time interval is not long, qiaodong zhangjiakou shengshi Minneapolis district high-rise fire, because fire channel random parked vehicles, furniture, and a serious escape difficult to residents in the building.

    Fortunately, these two fires were small, and the firefighters arrived in time without causing any casualties, but it was a wake-up call. Recently, many residents also reported to this newspaper, in the high-rise residential buildings where they live, there is also a widespread phenomenon of fire escape routes. In this regard, the author conducted a survey.

    Old tables, broken benches, strollers, electric cars, cabbages, green Onions... And Berlin in the capital of the Chinese street south road jiaokou incense courtyard Lin village, the author in the residential property management personnel led next visit, found the village more than 10 high-rise building, all exist in different degrees stair heap put sundry phenomena, stair is a "flea market + market". "Fire escapes can't be used in a fire, and some of the debris is flammable." "Said the property manager.

    The situation in a resettlement community near huai 'an road, yuhua district, the provincial capital, is even more shocking. There are nearly 30 tall buildings in the neighborhood, and almost all of them are blocked. The toy car blocks the stairs, the broken furniture across the stairs, pets in the stairwell... Surnamed li residents of guidance, the author came to the building of 7 and 8 layers, and the two floors of the fire door are rusty lock firmly lock, can put something inside, want to break into the house really need. What's more, in one of the buildings, the fireproof door was blocked by the broken table and chairs. The author pushed open a gap and saw that the stairway was transformed into a dog ring and kept two big dogs. When people come, they growl, jump up and down...

    "Blocking the fire exits in the building is equivalent to blocking the only 'life channel'; Lock the fire door, it is equal to lock the biggest escape hope!" A head of the provincial fire brigade told me that this kind of behavior reflects the public's unreasonable encroachment on public resources. The public housing area of high-rise residential buildings is relatively large, some residents feel that they have suffered from psychological problems, and then they have to expand their space to public areas, but they neglect the extremely important public safety.