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Requirements for fire doors

Release time:

2019-12-31 09:13

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Requirements for fire doors
Requirements for fire doors
Wooden fire door is made of flame retardant wood or flame retardant wood products as door frame, door frame, door panel, if the door leaf is filled with material, it is filled with non-toxic and harmless fire insulation material to the human body, and it is equipped with fire hardware fittings.
The overlapping size of the door leaf and the door frame shall not be less than 12mm; the matching clearance between the hinge side of the door leaf and the door frame shall not be greater than the dimensional tolerance specified in the design drawing; the matching clearance between the locked side of the door leaf and the door frame shall not be greater than the dimensional tolerance specified in the design drawing; the matching clearance between the door leaf and the upper frame shall not be greater than 3mm; the gap between the double and multi-leaf doors shall not be greater than 3mm; the movable clearance between the door leaf and the lower frame or the ground shall not be greater than 9mm mm; Gap between the door leaf and the door frame: the gap between the hinge side, the lock side and the upper frame shall not be greater than 3mm mm; 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 of Tianjin telescopic bar code reader and the door leaf shall not be greater than 1mm.
Wood fire door refers to the use of wood or wood products to make the door frame, door frame, door panel, fire resistance limit to meet the national requirements of the door. Some small deviations between wooden fire doors can not be wrong, perhaps it is a small detail problem, it may not meet the national standards.
Use of materials
First of all, compare the use of materials, fire door structure is simple, mainly composed of four parts: door closer, door panel material (06 and 08, etc.), door frame material, fire board composition. Class A fire doors generally use good quality 08 material, the normal service life in 5-8 years, the door of the iron is thicker, the same thickness of the fire door, the weight of the class A fire door is greater than the class B fire door.
Fire prevention time
The fire time of the fire door is mainly determined by the fire board. In this regard, the fire board used in the fire door of Class A is generally better than the performance of the fire board used in the fire door of Class B, so the overall performance is stronger than that of the fire door of Class B. In addition, Class A fire doors are especially suitable for occasions that require fine grinding before electroplating, excellent vibration, mirror polishing of hand tools, mirror polishing of electric heating tubes, etc., such as vibration of various furniture hardware accessories, cutting and polishing of hand tools, daily products, surface vibration of self-painting accessories, etc.
Another point of concern is that the materials with door frame function in Class A fire doors are more convenient, labor-saving and time-saving when designing the door opening size because the specifications of the door frame can be flexibly customized according to the needs of customers.
Cost of use
Although in terms of procurement costs, Class A fire doors are higher than Class B fire doors, but in terms of comprehensive use costs, Class A fire doors are better than Class B fire doors in many ways. However, Class B fire doors also have the characteristics of low price, but also occupy a part of the low-end market.
A clever woman cannot cook without rice. Rice is also divided into good rice and bad rice. Manufacturers refuse to use "good rice" and naturally cannot produce fire doors with reliable quality. This is worth thinking about by Chinese enterprises.

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