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How to choose high-quality fire doors
Fire doors are particularly important as the first level of fire protection in the home, but when you buy inferior fire doors, the fire doors are no longer fireproof. What should you do?
The fire department of our city investigated and destroyed a batch of inferior fire doors with honeycomb paper instead of fire-proof filling materials. Here, firefighters introduce the tips for purchasing high-quality fire doors. According to regulations, steel and wooden fire doors can be divided into three categories according to their fire resistance limits: Class A, Class B, and Class C. The requirements for fire resistance are 90 minutes, 60 minutes, and 30 minutes, and the wood used to make wooden fire doors needs to be processed. Dry and flame-retardant treatment, the hardware accessories used must also be fire-resistant hardware accessories.
Five tips for purchasing high-quality fire doors:
The first measure is to check the appearance. The high-quality steel\fireproof door is welded firmly, and the solder joints are evenly distributed; the outer surface is sprayed smoothly; there should be a product mark, a quality inspection mark and a quality certification (approval) at the specified position Sign. The qualified wooden fire door should have a complete appearance, no damage, clean surface, no planing marks, burrs and hammer marks; cut corners and joints should be tight and flat.
The second trick is the number. The external dimensions of qualified products should be less than or equal to the external dimensions in the sample description, the thickness of the door leaf should be greater than or equal to the thickness of the door leaf in the sample description, and the width of the side wall of the door frame should be greater than or equal to the door frame side in the sample description. The wall width, the outer dimension of the fireproof glass should be less than or equal to the outer dimension of the fireproof glass in the sample description, and the thickness of the fireproof glass should be greater than or equal to the thickness of the fireproof glass in the sample description.
The third trick is to look at the seals. Qualified steel and wooden fire doors should be equipped with fire-proof sealing strips. The sealing strips should be straight, without arches, and have a qualified inspection report issued by a national-level inspection agency.
The fourth trick is to estimate the weight. The fire doors with qualified quality are generally heavier, and those with very light fire doors must be products of inferior quality.
The fifth trick is to check the certificate. The fire door is a product that is included in the type approval system. The product needs to be type tested before it is sold. The general type inspection report describes the sample size, composition, material and product in detail. For photos, etc., you need to obtain a type inspection report from the manufacturer when you actually purchase it.
When the building does not have a reasonable configuration of fire doors, a small fire may cause a major accident. Fire doors play an extremely important role in preventing fires. What needs to be reminded here is that the fire door market is mixed, and you must choose qualified and capable manufacturers when choosing.