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How to choose a high-quality fire door
With the continuous development of my country's social economy, the number of various types of buildings is increasing, and the height of buildings is constantly increasing. High-rise buildings and large buildings have become the mainstream direction of urban construction. At the same time, the increase in building height and the expansion of building scale also put forward higher requirements for the fire protection performance of the building.
A fire door is a door that can meet the requirements of fire stability, integrity and heat insulation within a certain period of time. It is a fire partition with a certain degree of fire resistance, such as fire compartments, evacuation stairwells, vertical shafts, etc. In addition to the function of ordinary doors, fire doors have the function of preventing the spread of fire and smoke. It can be used for a certain period of time. Prevent the spread of the fire inside and ensure the evacuation of personnel.
How to buy high-quality fire doors
One: Check the appearance
The high-quality steel fire door is welded firmly and the solder joints are evenly distributed; the outer surface is sprayed smoothly and smoothly; there should be a product mark, a quality inspection mark and a quality certification (approval) mark at the specified position. Unqualified products look weak in welding, uneven distribution of solder joints; uneven and smooth spraying; no product mark, quality inspection pass mark and quality certification (approved) pass mark in the specified position.
Two: Pair the numbers
The external dimensions of the qualified product should be less than the external dimensions in the sample description, the thickness of the door leaf should be ≥ the thickness of the door leaf in the sample description, the width of the side wall of the door frame should be ≥ the width of the door frame in the sample description, and the external dimension of the fireproof glass should be less than the sample The outer dimensions of the fire-resistant glass in the description, and the thickness of the fire-resistant glass should be greater than the thickness of the fire-resistant glass in the sample description. The outer dimension of the unqualified product should be> the outer dimension in the sample description, the thickness of the door leaf should be
3: Look at the seal
Qualified steel fire doors and wooden fire doors should be equipped with fire-proof sealing strips, which should be straight, without arching, and have a qualified test report issued by a national inspection agency; unqualified products are not equipped with fire-proof seals The strip, or the sealing strip is not straight or arched, and there is no qualified inspection report issued by a national-level inspection agency.
Method 2 of buying high-quality fire doors
1: Fire resistance level of fire doors
Fire doors are divided into Class A, Class B, and Class C. This means the integrity of the fire door, which is the fire resistance time. The current standard in our country is that the fire resistance time of Class A is not less than 1.5 hours and Class B is not less than 1.0 Hours, Class C is not less than 0.5 hours. Class A is generally used in more important places, such as KTV private room doors and power distribution room doors. Class B is used in general places such as aisles, and Class C is generally used in pipeline wells.
2: Fire door material
Fire doors are usually divided into wooden fire doors, steel fire doors, stainless steel fire doors, fire glass doors and fire entry doors, whether wood, steel or other materials are divided into three grades: A, B, and C . Our actual practice is to use wooden fire doors for indoor use and steel fire doors for outdoor use. One is because the indoor wooden door is quieter when it is opened and closed, and there will be no collision sound of the steel door. The other is that the steel door is placed on the door. In addition to fire prevention outdoors, it can also play a better role in preventing theft and damage.
3: The style and direction of the fire door
The style mentioned here mainly refers to the door shape, single door, double door, double door, etc. In practice, we believe that the width of the door is within 1 meter to make a single door fire door, and the width of 1.2 meters can be used. Make a double or double door shape. The opening direction of the fire door mainly refers to whether the single door opens to the left or the right. In particular, all fire doors open to the outside and are not allowed to open inward. The opening direction of the fire door must be facing the direction of the evacuation channel. .
4: The surface of the wooden fire door
The wooden fire door is not like what we see on the Internet when it leaves the factory. It is the same color and pattern. The normal wooden fire door is all the original wood color when it leaves the factory, that is, the natural color of the wood. The colored ones we see on the Internet are specially made according to the needs of users, which can be used for paint and decorative panels.