Technical specifications for fire-resistant doors

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

The fire-resistant door is filled with non-combustible or flame-retardant lightweight fire-resistant profiles, commonly filled with perlite boards.

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

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