Double steel fire doors are usually used in shopping malls, hotels, hospitals, commercial buildings and other corridors. It not only meets the needs of daily switch, but also ensures the fire proof. There are usually two types of common double fire door in our daily life:
Normally closed fire door: it is usually closed and needs to be pushed open when someone passes by. It is suitable for installation in places with low flow of people, and is usually installed in staircases for emergency evacuation. Because if the door is opened and closed frequently, it violates the original intention of its design, causing damage to the door and affecting the fire protection effect.
Normally open fire rated double door: usually open, it will close automatically in case of fire. It is suitable for installation in the place with more people passing through, and it is also conducive to ventilation and lighting, especially in shopping malls. It is recommended to use such double fire doors.
The parameters of asico double steel fire door are as follows:
Asico Production Line