The steel fireproof door frame, door leaf panel and its reinforcement are made of cold-rolled sheet steel. The melting temperature of locks, hinges, bolts and other hardware fittings installed with steel fire doors shall not be lower than 950 ℃.

metal door,steel door frame,metal door frame,emergency door lock,fire rated door installation,exit door,

fire door factory,fire resistant doors for flats,metal door,exit door lock,exit door requirement,exit door,metal garage door,fire rated door installation,

exit door,fireproof door with glass,20 minute fire rated door,metal door,exit door price