Technical Specifications of Fireproof Doors
Fire-resistant doors are available in steel, glass, stainless steel, and wooden types, categorized into Class A, Class B, and Class C.
The fire door interior is filled with non-combustible or flame-retardant lightweight fire-resistant materials, commonly using perlite board as the filling.
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 by the "National Fixed Fire Extinguishing System and Fire-Resistant Component Quality Supervision and Inspection Center."
