fire door standard

Compared with GB 12955-1991 and GB 14101-1993, the main changes of the new national standard for fire doors are as follows:

fire-proof door

——Increase the classification according to the function of fire doors, which are divided into normally open fire doors, normally closed fire doors, quick-open fire doors in case of fire, high temperature explosion-proof fire doors, quick-lock fire doors, movable fire doors, etc.; The method of installing door closers is classified into fire doors with external door closers and fire doors with built-in door closers;

——The classification of fire resistance performance of fire doors has been revised. Originally classified according to A, B and C, this edition is changed to "insulated fire doors (type A)", "partially insulated fire doors (type B)" and "Non-insulated fire doors (Category C)" classification;

——The requirements for materials used in fire doors are more comprehensive and specific. For materials other than metal materials, the relevant material combustion performance and

Requirements for material combustion smoke toxicity;

——Delete the wind pressure deformation resistance, air penetration resistance and rainwater penetration resistance of wooden fire doors used as exterior doors of buildings

Require;

- More specific performance requirements for fire locks;

- More specific performance requirements for fire-resistant hinges (hinge);

Class B fire door

——Electric control automatic release device is required to be installed for normally open fire doors;

- more specific requirements for fire-resistant glass;

- The quality requirements and test methods for the door leaf of fire doors are added;

——Increase the requirements and test methods for the curvature of the door leaf in the width direction;

- The requirements and test methods for the gap between the door leaf and the door frame are added;

- The requirements and test methods for flexibility of fire doors are added;

- Added the requirements and test methods for the reliability of fire doors;

——The test method for the twist degree of the door leaf of the fire door has been improved;

——Added the measurement method of the overlap size of the door leaf and the door frame;

——Added judgment criteria;

All kinds of fire doors

The new version of the standard introduces the concepts and requirements of partially insulated fire doors and non-insulated fire doors from international and foreign standards. Class), partially insulated fire doors (B) and non-insulated fire doors (C) are classified; at the same time, the fire resistance limits of the original A, B and C fire doors are adjusted to 1.5h, 1.0h and 0.5 h, enriches the types of fire door products in my country and increases the choice of practical applications. For applications that only require fire doors with partial thermal insulation or fire integrity requirements, partial thermal insulation or non-thermal insulation fire doors can be selected. . The new version of the standard also stipulates that if the door leaf is filled with materials, non-toxic and harmless fire and heat insulation materials should be used to reduce the impact on human health. These regulations not only make the setting of fire doors more reasonable, but also reduce the production cost and raw material consumption of fire doors. Meet the requirements of environmental protection and building a conservation-minded society. At the same time, the new version of the standard also increases the content and requirements of steel and wood thermal insulation fire doors and other materials, providing technical basis for the application of new materials, new technologies and the production and inspection of new fire doors, expanding the production of fire doors. Enterprise development space.

Class A

Also known as a fully insulated fire door, it can meet the requirements of fire-resistant insulation and fire-resistant integrity at the same time within the specified time. ) and 2.0h, 3.0h.

Class B

Also known as partial thermal insulation fire doors, the fire resistance and thermal insulation requirements are 0.5h, and the fire integrity grades are 1.0h, 1.5h, 2.0h, and 3.0h, respectively.

Class C

Also known as non-insulated fire doors, there is no requirement for its fire resistance and heat insulation. It only meets the requirements of fire integrity within the specified fire resistance time. The fire integrity levels are 1.0h, 1.5h, 2.0h, and 3.0h respectively. In the British BS standard, there is the content of non-insulated fire doors.

wooden fire door

The GB16809-2008 "Fireproof Windows" standard specifies the naming, classification and code, specifications and models, technical requirements, test methods, inspection rules, signs, packaging, transportation and storage of fireproof window products, which are suitable for lighting in buildings. The steel thermal insulation fireproof window, the wooden thermal insulation fireproof window and the steel-wood composite thermal insulation fireproof window can also refer to other fireproof windows. The new standard, corresponding to the fire door standard, modifies the relevant fire resistance performance parameters of fire windows. Compared with the 97 edition of the standard, the main changes are as follows: the scope of application of the standard has been expanded; the classification method of fire resistance performance of fire windows has been revised with reference to international and foreign standards, according to "thermal insulation (Class A)" and "non-thermal insulation (C)". Class)”, and added five fire resistance grades from 0.5h to 3.0h; clarified the model preparation method of fireproof windows; increased the quality requirements and test methods of fireproof glass used on fireproof windows; increased fireproof windows Technical requirements and test methods such as wind pressure resistance and air tightness, torsion of movable sash, static operating temperature of thermal sensitive components of movable fire windows, closing reliability of window sash, automatic closing time of window sash, etc. At the same time, the type inspection of fire windows has been revised Sampling methods and decision criteria. "Code for Fire Protection Design of High-Rise Civil Buildings" requires the setting of fire doors. In the fire protection design of high-rise buildings, fire doors not only have the function of ordinary doors, but also have special functions of fire prevention, smoke isolation, fire suppression, and protection of personnel evacuation.