Subway fire door is an essential fire divider between underground traffic construction fire zones. The areas that use fire door in subway are mainly administrative districts, public areas and rail areas. Administrative and public area fire doors can be installed in accordance with the conventional way, and as a rail area fire door must be treated special, the problem lies in its special use environment.
Fire doors in subway and high-speed railway tunnels are fire isolation doors in rail running areas, installed on both sides of the track, used as fire isolation and personnel evacuation safe passages in the event of safety accidents, and can be used as tunnel maintenance entrances during breaks.