Three tips for choosing high-quality fire doors, the heat resistance limit of Class B fire doors

Fire doors are particularly important as the first step in home fire protection. However, nowadays, inferior fire doors are on the street. How to choose high-quality fire doors to protect the lives and property of the whole family when a fire strikes has become a top priority. heavy. Here, Tongxiao Industrial has compiled three tips for purchasing high-quality fire doors for you. Heat resistance limit of Class B fire doors
According to regulations, steel and wooden fire doors can be divided into three categories: Class A, Class B and Class C according to their fire resistance limits. The fire resistance limit requirements are minutes, minutes and minutes respectively, and are used for The wood used to make wooden fire doors needs to be dried and flame-retardant, and the hardware used must also be fire-proof.
There are three tips for choosing high-quality fire doors. The first is to check the appearance. High-quality steel fire doors are welded firmly and the solder joints are evenly distributed. The outer surface is spray-painted and smooth. The appearance of qualified wooden fire doors should be complete and without damage. It should be clean and smooth, without planing marks, burrs or hammer marks. Cut corners and seams should be tight and smooth. There should be product marks, quality inspection marks and quality certification (approval) marks at the specified positions.
The second step is to look at the seal. Qualified steel and wooden fire doors should be equipped with fire seals. The seals should be straight, without arches, and have a qualified test report issued by a national testing agency.
The third step is to match the numbers. The thickness of the door leaf of the qualified product should be greater than or equal to the thickness of the door leaf in the sample description. The width of the door frame side wall should be greater than or equal to the width of the door frame side wall in the sample description. The outer dimensions of the fireproof glass should be less than or equal to the sample. Fire-resistant glass dimensions in description.
Heat resistance limit of Class B fire doors
If you have any questions about fire doors, we will try our best to answer them. For more details, please visit the official website of Shenzhen Tongxiao Industrial Co., Ltd. or consult the relevant staff