Selection and purchase method of fire door

Fire doors play a particularly important role in family fire prevention, but when you buy low-quality 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 fireproof filler materials. Here, the firefighters introduced some tips on how to select and purchase high-quality fire doors. According to the regulations, steel and wood fire doors can be divided into Class A, Class B and Class C according to the fire resistance limit. The fire resistance limit requirements are 90 minutes, 60 minutes and 30 minutes respectively. In addition, the wood used to make wood fire doors needs drying and flame retardant treatment, and the hardware used must also be fire hardware.

There are five ways to purchase high-quality fireproof doors:

The first move is to check the appearance. The high-quality steel fireproof door is firmly welded and the welding spots are evenly distributed; The external surface shall be sprayed flat and smooth; There shall be product mark, quality inspection mark and quality certification (approval) mark at the specified position. The qualified wooden fireproof door shall be intact without damage, and the surface shall be clean without plane marks, burrs and hammer marks; Corner cutting and butt joint shall be tight and flat.

The second way is to check the figures. The overall dimensions of qualified products should be less than or equal to the overall dimensions in the sample description, the door leaf thickness should be greater than or equal to the door leaf thickness in the sample description, the door frame sidewall width should be greater than or equal to the door frame sidewall width in the sample description, and the overall dimensions of fire-resistant glass should be less than or equal to the overall dimensions of fire-resistant glass in the sample description, The thickness of fireproof glass shall be equal to or greater than the thickness of fireproof glass in the sample description.

The third way is to look at the seals. Qualified steel and wood fire doors should be equipped with fire sealing strips, which should be straight without arching, and have a qualified test report issued by the testing agency.

The fourth way is to estimate the weight. Fire doors with qualified quality are generally heavier, while those with very light quality must be fake products.

Five tips are to check the certificate. Fire doors are products that are included in the type approval system. Type inspection is required before the products are sold. Generally, the type inspection report describes the specifications, dimensions, composition, materials and product photos of the samples in detail. In the actual purchase, the type inspection report should be obtained from the manufacturer.