What are the differences of fire door

The safety facilities to prevent the fire spreading and control of wind flow in underground or building with fire requirements are usually divided into steel and wooden fire doors.

Class a fire door, fire resistance limit is greater than 1.5 hours
Class B fire door, fire resistance limit is greater than 1.0 hours
Fire resistance limit of class C fire door is greater than 0.5 hours

There are many kinds of fire doors, such as wood fire doors, glass doors, steel fire doors, etc;
According to the function of use: there are door access fire doors, door entry doors, indoor fire doors, quick lock fire doors, fire doors, multi-function fire doors, electronic fire doors, etc. in case of fire; According to the installation position of door closer, the external fire door and the built-in fire door are divided into two parts;

difference:
The opening direction of fire door must be evacuation direction. It is important to open the direction《 The high regulations have clearly stipulated that the opening direction is to be opened in the direction of evacuation. For example, the stairwell should be opened in the front of the stairs to facilitate the evacuation of personnel. In addition, the front room is generally a refuge and evacuation passage. When a fire occurs, positive pressure air supply is required. If it is not installed in the above-mentioned opening direction, the air pressure may open the fire door and there will be a situation of fire and smoke.

Door closer: fire door is an important part of fire equipment and an important part of social fire protection. Therefore, the quality and use of fire door is the key to success or failure of fire prevention. Some customers have a good idea whether the fire door needs to be installed.

Door closer: fire door is an important part of fire equipment and an important part of fire protection. Therefore, the quality and use of fire door is the key to success or failure of fire prevention.