Fires are terrible disaster. They cause irreparable damage to a person and his property. Fires can lead to human losses, which is a consequence of the impossibility of leaving the burning room. Entrance doors either burn or receive deformation under the influence of high temperatures. Fire steel doors relieve these problems during evacuation during fire.
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Fire -based doors are made from fireproof materials, they do not burn and do not allow fire to be spread through the building. The usual doors withstand ten minutes of exposure to the fire elements and lose their shape, after which it is difficult to open. Fire -based doors withstand 360 hours of high temperatures, they are not deformed, due to the use of fire materials in their production. Smoke and toxic substances do not pass through such doors, because they have a special filler, seal and heat insulator.
Fire doors are much more expensive than ordinary. They are a multi -layer design. The outer layers can be made of wood, aluminum and other metals. The inside consists of heat insulators that prevent the heating of the door. Basically, the heat insulator is mineral non -combustible cotton wool. The perimeter of the door is equipped with a special seal that prevents the ingress of smoke and combustion products into the room.