Technical requirements for fire door

Wooden fireproof door is a kind of door with certain fire resistance performance, which is made of fire-resistant wood or fire-resistant wood products as door frame, door leaf framework and door leaf panel. If the door leaf is filled with materials, it will be filled with fire insulation materials that are non-toxic and harmless to human body, and equipped with fire hardware accessories.

The overlapping size of door leaf and door frame shall not be less than 12mm; The fit clearance between the door leaf and the hinge side of the door frame shall not be greater than the dimensional tolerance specified in the design drawings; The fit clearance between the door leaf and the locked side of the door frame shall not be greater than the dimensional tolerance specified in the design drawings; The clearance between the door leaf and the upper frame shall not be greater than 3mm; The gap between two or more door leaves shall not be greater than 3mm; The movable clearance between the door leaf and the lower frame or ground shall not be greater than 9mm; The gap between the door leaf and the door frame binding surface: the gap between the door leaf and the binding surface of the door frame on the hinge side, the lock side and the upper frame shall not be greater than 3mm; The plane height difference between the door leaf and the door frame: On the opening surface of the fire door, the plane height difference between the door frame and the door leaf of Tianjin Telescopic Barcode Reader should not be greater than 1mm.

Wooden fireproof door refers to the door frame, door leaf framework and door leaf panel made of wood or wood products, and the fire resistance limit of the door reaches the specified value. Some small deviations between wooden fireproof doors cannot be wrong. Maybe it is a small detail problem that may fail to meet the standard.

Materials used

First of all, compare the materials used. The fireproof door is simple in structure and mainly consists of four parts: door closer, door panel materials (including 06 and 08), door frame materials and fireproof panels. Grade A fireproof door is generally made of 08 material with good quality. Its normal service life is 5-8 years. The iron material of the door panel is thick. For the fireproof door with the same thickness, the weight of Grade A fireproof door is greater than that of Grade B.

Fire prevention time

The fire prevention time of fire doors is mainly determined by fire boards. In this regard, the performance of fire boards used for Class A fire doors is generally better than that of fire boards used for Class B fire doors, so the overall performance is better than that of Class B fire doors. In addition, Class A fireproof doors are especially suitable for those occasions that require fine grinding before electroplating, excellent vibration, mirror polishing of hand tools, mirror polishing of electric heating tubes, etc., such as the vibration of various furniture hardware fittings, cutting and polishing of hand tools, surface vibration of daily products, self painted accessories, etc.

It is also worth noting that the materials with door frame function in Class A fireproof doors can be flexibly customized according to the customer's needs, so it is more convenient, labor-saving and time-saving to design the door opening size.

Usage cost

Although in terms of purchase cost, Grade A fireproof door is higher than Grade B fireproof door, but in terms of comprehensive use cost, Grade A fireproof door is better than Grade B fireproof door in many aspects. However, Grade B fire doors are also cheap and occupy a part of the low-end market.

It is difficult for a skillful woman to make a meal without rice. There are good rice and bad rice. Manufacturers refuse to use "good rice", so they cannot produce reliable fire doors naturally. This is worth thinking about by Chinese enterprises.