The steel fire door is impact resistant, and the structural strength can withstand long-term collision without reducing fire protection, and can withstand the impact of fire hydrant. When the fire is open, the steel fire door can be freely opened for escape or closed for smoke evacuation and waiting for rescue.

https://ztfiredoor.com/23928.html

commercial steel door and frame,custom commercial metal doors,commercial hollow metal doors,commercial steel door frame,36 commercial steel door and frame,commercial steel door and frame,commercial exterior steel entry doors,custom commercial metal doors,36×80 commercial steel door,commercial steel door frame,commercial steel security doors,commercial steel door and frame,steel industrial doors,custom commercial metal doors,business metal doors,commercial steel door frame