Steel fire door is an important safety equipment in the building, choose a good quality steel fire door for the fire safety of the building is of great significance. So how to judge the quality of steel fire door? The following aspects will be analyzed from the appearance, material, structure and performance.
First of all, appearance is a barrier to judge the quality of steel fire doors. Observe whether the surface of the door is flat and smooth, whether the color is uniform, and whether there are obvious defects such as depressions, scratches or bubbles. Whether the edge of the door is straight and no obvious welding marks, whether the door frame is installed firmly.
Secondly, the material is one of the important factors to determine the quality of steel fire door. Good steel fire door should be made of high quality steel, commonly used materials include cold rolled steel, stainless steel and copper alloy. The thickness of the plate of the door should be appropriate, the general requirement is not less than 0.6mm. the surface of the steel can be protected by anti-corrosion coating to increase its durability and corrosion resistance.
Third, the structure is the key to determine the quality of steel fire doors. A good fire door should have a solid structure and stable performance. The door frame should be firmly installed, and the door should have good sealing and fireproof performance. Door hinges, door locks and door sucks and other parts should be fixed and reliable, flexible and easy to use, without loosening or jamming. The door frame and the wall should be tightly fitted without obvious gaps to ensure its effect of smoke and fire prevention.
, Performance is the key index to judge the quality of steel fire doors. The performance of fire doors mainly includes fire prevention time, smoke prevention performance, fire temperature rise and sound insulation performance. The fire prevention time of steel fire doors usually has 30 minutes, 60 minutes and 90 minutes levels, which are selected according to different building requirements. Smokeproof performance refers to the airtightness of the door. A good fire door should have a good smokeproof effect, which can effectively block the spread of fire smoke. Fire doors should be able to withstand a certain temperature in the fire, without deformation, discoloration and other phenomena. At the same time, the fire door should have good sound insulation performance, in order to effectively block the noise, to protect the indoor quiet.
In addition to the above points, there are some small details can also help determine the quality of steel fire doors. For example, the service life of the door, open and close the flexible and smooth, can be opened and closed many times to test; the quality and stability of the door lock, whether it is easy to be damaged by external forces; the anti-theft performance of the door, whether it has anti-prying, anti-destructive structural design and so on.
In short, to determine the quality of steel fire doors need to consider the appearance, materials, structure and performance and other factors. Choosing a good quality steel fire door can improve the fire safety of the building and protect the lives and properties of people. Therefore, you should pay attention to the above points when purchasing steel fire doors, consult with professionals and choose the right brand and model of fire doors.
