Technical parameters of fire door
The fire door specification specifies the production requirements of the product, and the production parameters give detailed figures. The fire door manufacturer must carry out production and processing in accordance with the specification to meet the requirements of qualified products. Here we will make statistics on some important technical parameters. Help to some fire door buyers.
Thickness of fire door leaf: The thickness of wooden fire door A must not be less than 5cm, Class B 4.5, and C not less than 4cm; the door frame is 10cm; the thickness of steel fire door is the same as that of wooden door, and the door frame is 13cm, 12cm and 11cm.
Thickness of fire door plate: The thickness of the steel door leaf must not be less than 0.8mm, and the door frame is 1.2mm and 1.5mm according to different positions, and the reinforcement is 3.0mm;
Fire door fire resistance limit time: Class A fire door 90 minutes, Class B fire door 60 minutes, Class C fire door 30 minutes; reach the insulation performance within the specified fire resistance limit, the temperature of the back fire can not exceed 140 ℃.
Fire-resistant door and window glass must use Class A thermal insulation composite fire-resistant glass, and its thickness is generally greater than 25mm. The glass area is not more than 15% of the door area.
The hardware of the fire door configuration has a melting of not less than 950 degrees, and the normally open fire door must be equipped with a fire self-closing system.
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