Fire protection facilities in public places are indispensable. For example, stairway passages are usually equipped with fire doors, which can play a role in preventing the spread of fire. The fire doors are also used in home decoration. So, what is the difference between a Class A fire door and a Class B fire door ? How to buy a fire door? The following editor will take you to understand.
Difference between Class A fire door and Class B fire door
1. The difference between Class A fire door and Class B fire door-fire resistance limit
Fire doors are generally used in the entrances and exits of stairwells or the openings of tube wells, and their function is to isolate smoke and fire. Fire doors can be divided into Class A fire doors and Class B fire doors. The fire resistance of Class A fire doors is between 1.50 and 2.00h, while the fire resistance of Class B fire doors is between 0.50 and 1.50h. According to China's fire protection standards, the fire protection time of Class A fire doors is not less than one and a half hours, and the fire vision of Class B fire doors is not less than one hour.
2. The difference between Class A fire door and Class B fire door-material
Fire doors are mainly composed of four types of door closers, door panel materials, door frame materials, and fire panels. Class A fire doors use 08 materials of relatively good quality. Its service life is generally between 5 years and 8 years. Its door plate iron is thicker and heavier than Class B fire doors of the same thickness. .
3. The difference between Class A fire door and Class B fire door-use location
Class A fire doors are usually used in more important places, such as private room doors, power distribution room doors, etc. Class B fire doors are generally used in aisles and other places.
Selection skills of fire doors
1. The purchase skills of fire doors-appearance
When choosing a fire door, it is preferred to check its appearance. The steel fire of the better fire door is very strong, and the welding points are evenly distributed. Its outer surface is sprayed flat and lubricated, and the product mark and the mark of qualified quality inspection are marked at the specified position.
2. The purchase skills of fire doors-on the number
The external dimensions of the qualified fire door are less than or equal to the external dimensions described in the sample, and the thickness of the door leaf is greater than or equal to the thickness of the sample door, and the width of the side wall of the door frame is also greater than or equal to Equal to the width of the side wall of the door frame of the sample.
Summary of the article: The above is the relevant content about the difference between Class A fire door and Class B fire door and the purchase skills of fire door, I hope to help you. Fire doors are distinguished according to their fire resistance vision, and the fireproof materials contained in them are generally perlite. For more related knowledge, please continue to pay attention to this website.
What, the decoration still uses his own money? ! The Qi family is decorated in installments, with an ultra-low annual interest rate of 3.55% and a maximum loan of 1 million. Apply now to enjoy the discount
If you are interested in brand cooperation, content cooperation, and advertising of this website, please send an email to :.
Walk-in Bathtub
Walk-in Bathtub,vintage clawfoot tub,square freestanding bath,delta freestanding tub,round freestanding tub
Guangzhou Aijingsi Sanitary Products Co.,Ltd , https://www.comoxvalleyhottubs.com