The many advantages of steel fire doors make them occupy a larger market share in public buildings. The steel fire door frame should be filled with non-combustible materials, and the melting temperature of hardware accessories such as door locks, hinges, and latches should not be lower than 950 °C.

ZHTdoors fire doors, 31 years of production experience in fire doors and Windows. The main UL fire doors, EN fire doors,  BS EN fire doors, etc.,.We have certification.ZHTdoors support OEM and free design.Our advantages:good quality, factory price, good service.Welcome to consult us.