Fire doors are metal doors and windows or special doors and windows?
Fire door is an active fire separation, in addition to the role of ordinary doors, in a certain period of time, together with the framework to meet the fire stability, integrity, with fire, smoke, blocking the special function of high temperature door
Types of special doors:
Fire doors.
Steel fire doors.
Steel waterproof open the door.
With substation to open the door.
Light steel anti-ray door.
Fire door is an active fire separation, which in addition to the role of ordinary doors, in a certain period of time, together with the framework to meet the fire stability, integrity, with fire, smoke, blocking the special function of high temperature door.
Should be special doors and windows, because the fire doors and wood and other materials
