Technical specifications for fire-resistant 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 fire-resistant door is filled with non-combustible or flame-retardant lightweight fire-resistant materials, commonly using perlite board as the filling.
Fire door leaf steel plate thickness is not less than 0.8mm, frame steel plate thickness is not less than 1.2mm, with the specific thickness depending on the fire door grade.
Fire-resistant doors must pass inspection by the "National Fixed Fire Extinguishing System and Fire-Resistant Component Quality Supervision and Inspection Center."
