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The difference between Class A fire door and Class B fire door
Release time:
2017-01-05
Before buying fire doors, everyone should know about relevant knowledge, which is more conducive to everyone's purchase,. In order to facilitate everyone's purchase, small make up to sort out the relevant information, today to briefly introduce the difference between class a fire door and class B fire door.
Before buying fire doors, everyone should know about relevant knowledge, which is more conducive to everyone's purchase,. In order to facilitate everyone's purchase, small make up to sort out the relevant information, today to briefly introduce the difference between class a fire door and class B fire door.
The difference between Class A fire door and Class B fire door
Different 1. fireproof materials
The fire door has a simple structure and is mainly composed of four parts: a door closer, a door panel material, a door frame material, and a fire board. Class A fire door and Class B fire door frame and door leaf steel plate thickness is the same, are the door frame steel plate thickness is 1.2mm, door leaf steel plate thickness of 0.8mm.
The difference in material lies in the thickness of the built-in fireproof pearl rock wool. The thickness of grade A fireproof door pearl rock wool is 52mm, and the thickness of grade B fireproof door pearl rock wool is 46mm. As a result, the thickness of grade A fireproof door leaf is 54mm, and the thickness of grade B fireproof door leaf is 48mm. Therefore, the weight of grade A fireproof door is greater than that of grade B fireproof door.
2. use of different locations
Class A fire doors are generally used in computer rooms, oil depots, warehouses and other important fire passages and flammable and explosive places. Class B fire doors are generally used in ordinary fire passages, so the use of Class B fire doors is more than that of Class A fire doors.
Different time limits of 3. fire prevention
Fire door is one of the measures of building fire separation, usually used in the stairwell entrance or tube well opening parts, requirements can be separated from smoke, fire. Steel fire doors play an important role in preventing the spread and spread of smoke and fire and reducing losses. Therefore, strict requirements must be imposed on them. At present, China's standard is that the fire prevention time of Class A is not less than 1.5 hours and Class B is not less than 1.0 hours.
Today, Xiao Bian will share the difference between Class A fire doors and Class B fire doors with everyone. If you need it, you can simply understand the relevant information through this article, so that you can better select the products you like.
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