Functions such as kitchen need to set fire doors between the kitchen of the building and other functional areas that do not belong to the residential building. Fire doors can prevent fire and smoke because they are made of refractory materials.
The kitchen fire door should be designed as a horizontal door that opens in the evacuation direction, and can be manually opened from any side after closing.
In terms of materials, there are steel, wood, stainless steel and so on. , and the most common is the steel fire door. If there is no fire partition involved, Class B fire doors are generally adopted.