Stainless steel fire door is to show in a certain period of time can meet the fire resistance stability, integrity and insulation requirements of the door, it is located in the fire partition, evacuation stairwell, vertical shaft and other fireproof partitions.
Stainless steel fire door to use stainless steel material to make door frame, door fan skeleton and door fan face plate, if the filling material inside the door fan, then fill the fire insulation material that is non-toxic and harmless to human body. And with fire hardware accessories composed of a certain fire-resistant performance of the door, stainless steel fire door in addition to the role of the ordinary door. Moreover, it can prevent the spread of fire and smoke from spreading, prevent the spread of fire within a certain time, and ensure the evacuation of personnel.
What is the difference in control? Which type of price is higher in the market? What are the application scenarios? Take these questions with you. Hebei Chitong doors and Windows Co., LTD. Takes you to understand the difference between stainless steel normally closed fire doors and stainless steel normally open fire doors in detail.
Stainless steel normally open fire doors and stainless steel normally closed fire doors main components:
Stainless steel normally open fire doors, literally, is usually open, only in the event of a fire will be automatically closed by the control system. Normally closed fire door is a more common fire door, usually the community with the door is usually closed fire door.
Control mode of normally open stainless steel fire doors and normally closed stainless steel fire doors:
Control mode of normally open stainless steel fire door: normally open stainless steel fire door is controlled by fire door release switch, which is usually installed on the wall or self-made support. The height is about 1.4m from the ground. Usually, the electromagnetic door is attracted by the working voltage of DC24V output by the control module of the fire control center or FMK controller, and the fire door is kept in the normal open state.
In case of fire, smoke or temperature detector will transmit the detected signal to the control switch, and DC24V power off. After the electromagnetic door loses power, release the door body, and the fire door is closed by the door closers. The double fire door is closed sequentially by controlling the delay and power off of the left and right doors and feedback the closing signal. The reset of normally open fire door must be pulled by on-site manpower. After the reset, the state signal of fire door will be fed back to the fire control room.
Stainless steel normally closed fire door control mode: normally closed fire door does not need to set up electric control device, normally closed, by mechanical door closure to maintain the automatic closure of the door, truly achieve people to close the door, the more common fire door is normally closed fire door.
Application scenarios of stainless steel normally open fire doors and stainless steel normally closed fire doors:
Often open fire door key application scenarios: often open fire door is generally installed on the evacuation passageway, open a door in the firewall, building an independent fire partition to another fire partition area fire doors, high-rise public building personnel in the sealed places such as shopping malls market, school buildings, hotels, apartments, etc.
The main application scenarios of stainless steel normally closed fire doors are as follows: fire doors of high-rise residential buildings, pipe Wells attached to the building interior, fire control room, fire pump room and other equipment. (Note: the flow of people or logistics of these buildings and parts is relatively fixed at ordinary times. In practical use, the function of normally closed fire doors can be guaranteed.)
Stainless steel normally open fire door and stainless steel normally closed fire door price comparison: normally open fire door, whether single fire door or the whole fire system, the price is higher than normally closed fire door.
