What is the standard for fire doors?

According to the Chinese national standard GB12955-2008 fire door heating test results, if the insulation fire door test specimen meets the following conditions (a) to (v), it can be regarded as meeting the requirements of type A (heat-resisting) fire doors. Only when the following conditions (a) to (iv) are met, it can be regarded as complying with the B (non-heat-resisting) fire door regulations.

1. Insulation fire doors do not produce changes that are considered to be harmful to fire, such as deformation, destruction, exfoliation, and peeling.

2. Insulation fire doors do not produce flames that reach the non-heated surface of the test specimen and cracks or holes that are harmful to the fire.

3. Insulation fire door heating test In any part of the test specimen perimeter (door leaf), the reflex or deflection does not exceed half of the thickness of the door leaf.

Fourth, heat insulation fire door heating test non-heating surface of the test did not produce a combustion flame.

Fifth, heat insulation fire door heating test in the highest non-heating surface temperature does not exceed 960 °C.

In a word, within a certain period of time, including thermal insulation and fireproof doors, door sills and hardware fittings, they can meet the complete fire resistance, flame resistance, and thermal insulation integrity of the door group, that is, relatively stable in the fire field. , do not allow the penetration of fire smoke and heat insulation source conduction and other basic properties, in order to control the fire in the fire zone dash, do not delay the burning or ignite another fire, the door with this basic performance can be called "insulated fire door All materials must be tested by the designated laboratories of the Ministry of Economic Affairs.

What is the classification of fire doors?

Fire safety facilities that prevent fires or underground fires from spreading and control winds are usually designed as steel insulated fire doors or wooden fire doors.

Class A Class A insulation fire door, fire resistance limit 1.5 hours

Class B insulation fire door, fire resistance 1.0 hours

Class C insulation fire doors, fire resistance limit 0.5 hours