Technical Specifications for Fireproof Doors

Fire doors include steel fire doors, glass fire doors, stainless steel fire doors, and wooden fire doors, categorized into Class A, Class B, and Class C.

The interior filling material of fire-resistant doors is non-combustible or flame-retardant lightweight fire-resistant profiles, usually filled with perlite boards.

The fire door leaf steel thickness is not less than 0.8mm, the door frame steel thickness is not less than 1.2mm, with the specific thickness depending on the fire door grade.

Fire doors must pass inspection and be certified by the "National Supervision and Inspection Center for Quality of Fixed Fire Extinguishing Systems and Fire-Resistant Components."