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How to choose a high-quality fire door

by:CBM     2021-06-07
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.

Fire doors refer to doors 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.

Methods for purchasing high-quality fire-resistant doors

1: Check the appearance

The high-quality steel fire-resistant doors are firmly welded and the solder joints are distributed Uniform; the outer surface is sprayed smoothly and smoothly; there should be a product mark, a quality inspection pass mark and a quality certification (approval) pass 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: For the number

The external dimensions of qualified products should be ≤ 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, and the width of the side wall of the door frame should be ≥ the sample The width of the side wall of the door frame in the description, the outer dimension of the fireproof glass should be less than the outer dimension of the fireproof glass in the sample description, and the thickness of the fireproof glass should be greater than the thickness of the fireproof 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 in the sample description The outer dimensions of the fireproof glass and the thickness of the fireproof glass should be less than the thickness of the fireproof glass door in the sample description.

3: Look at the seals

Qualified steel fire doors and wooden fire doors should be equipped with fire-proof sealing strips, which should be straight, without arching, and have national-level inspections Qualified inspection report issued by the agency; unqualified products are not equipped with fireproof sealing strips, or the sealing strips are not straight or arched, and there is no qualified inspection report issued by a national-level testing agency.

Method 2 for purchasing high-quality fire doors

1: Fire resistance level of fire doors

Fire doors are divided into A, B, Class C is the third class, which means the integrity of fire resistance, that is, the fire resistance time. The current standards in my country are that the fire protection time of Class A is not less than 1.5 hours, Class B is not less than 1.0 hour, and 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 or steel Quality or other materials are divided into three levels: 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-opening door, double-opening door, sub-mother door, etc. It is recognized that a single-open fire door with a width of less than 1 meter can be made into a single-open fire door, and one with a width of 1.2 meters can be made into a double-opening or double-opening door. 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 fireproof door

When the wooden fireproof door leaves the factory, it does not look like what we see on the Internet. It has this color and that pattern. Normal wooden fireproof doors leave the factory. All the time is the original wood color, 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.

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