A fire door is a door that meets the requirements for fire resistance stability, integrity, and insulation for a certain period of time. It is a fireproof partition with certain fire resistance, such as in fire compartments, evacuation stairwells, vertical shafts.
In addition to the function of ordinary doors, fire doors have the function of preventing the spread of fire and the spread of smoke, which can prevent the spread of fire for a certain period of time and ensure the evacuation of personnel.
Fire doors are divided into: wooden fire doors, steel fire doors, steel fire doors, other fire doors, etc.;
Wooden fire doors: use fire-resistant wood or fire-resistant wood products for door frames, door leaf frames, and door leaf panels.
Steel fireproof door: The door frame, the door leaf frame and the door leaf panel are made of steel material. If the material is filled in the door leaf, it is filled with fireproof and heat-insulating material which is non-toxic and harmless to the human body, and is equipped with fireproof hardware fittings. The door to performance.
Steel wood fire doors: door frames, door leaf frames, door leaf panels are made of steel and flame retardant wood materials or flame retardant wood products.
Other material fire doors: use inorganic non-combustible materials other than steel, flame-retardant wood or flame-retardant wood products or partially use steel, flame-retardant wood, fire-resistant wood products to make door frames, door leaf frames, door leaf panels, if inside the door leaf The filling material is filled with fire-proof and heat-insulating materials which are non-toxic and harmless to the human body, and are equipped with fire-resistant hardware fittings with certain fire-resisting doors.
Divided by fire resistance and insulation performance:
Class A fire doors are not less than 1.5 hours;
Class B fire doors are not less than 1 hour;
Class C fire doors are not less than 0.5 hours.
According to the characteristics of opening and closing: normally closed fire doors; normally open fire doors.
Post time: Sep-15-2021