Technical Specifications for Fireproof Doors

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

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

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

Fire doors must pass inspection and be certified by the "National Fixed Fire Extinguishing System and Fire-Resistant Component Quality Supervision and Inspection Center."