Fire door frames and door leaf panels should be made of steel materials with performance not lower than that of cold-rolled thin steel plates, and cold-rolled thin steel plates should meet the requirements of GB/T708.
The reinforcement used for fire doors can be made of steel materials whose performance is not lower than that of hot-rolled steel. The thickness of hot-rolled steel shall meet the requirements of GB/T709.
Material thickness of 0.8mm door panel and 1.2mm door frame material, width within 1250mm, 1000mm, 1200mm, 1250mm are more common
