What are the technical requirements for fire-resistant windows?

The glass uses a double layer, with a certain thickness of fire-resistant adhesive in between, allowing it to withstand temperatures of several hundred degrees without breaking.

The fire resistance rating of fire-resistant windows is as follows: Class A windows must have a fire resistance of at least 1.2 hours, Class B windows must have at least 0.9 hours, and Class C windows must have at least 0.6 hours. Technical requirements: I. Materials and accessories (1) The window frame shall be a steel frame or a wooden frame with sufficient strength to ensure the integrity and stability of the components. (2) The steel frame and clamping strips can be made of galvanized steel sheets or stainless steel sheets. Its material selection criteria comply with the provisions of Article 5.1 in GB12955 \"General Technical Requirements for Steel Fire Doors\". (3) The material selection standards for wooden frames and strips shall comply with the provisions of Article 5.1.1 in GB14101 \"General Technical Requirements for Wooden Fire Doors\". (4) The filling material inside steel and wooden frames should be non-combustible. (5) Fire-resistant glass can be selected from products that do not affect the successful completion of the fire resistance performance tests for fire doors. The light transmittance of the glass is not less than 75% that of ordinary flat glass with the same number of layers. (6) The sealing material between the frame and the fire-resistant glass should be a flame-retardant material that can provide fire and smoke barrier protection in case of a fire. (7) Hardware fittings should be standardized, matching products that have passed testing. II. Installation requirements: 1. During acceptance, Party A shall carefully check the quantity, specifications, grade, and ensure that all accessories are of qualified quality and complete in accordance with the supply contract. 2. For the storage of fireproof windows, they should be kept vertically in a dry indoor area, with anti-corrosion measures in place; the glass should be placed on or against objects that will not damage its edges or surface. 3. Installation: (1) The fireproof window must be inspected before installation. If the window frame or sashes are warped, deformed, or the glass is damaged due to improper handling during transportation or storage, these issues must be repaired before the window can be installed. (2) When installing fireproof windows, it is necessary to use a level to ensure they are level, or to use string lines to adjust their verticality in all directions, so that they are horizontal, vertical, and at the same height. (3) The window frame must be integrated with the building, connected to the wall using wood or metal. After the steel window frame is installed, cement mortar must be poured between the frame and the wall, and it must be cured for more than 24 hours before it can be used normally. (4) The positions of the mounting holes for the hardware fittings should be accurate, so that the fittings can be installed smoothly and firmly to meet the usage requirements. (5) When installing fire-resistant glass, ensure that the gaps around its edges are even; after positioning it, fill and level these gaps with fire-resistant insulation, and then seal them with edge strips. (6) In addition to the requirements mentioned above, the installation shall be carried out in accordance with the requirements of the \"Construction and Acceptance Specifications for Projects\". Last edited by Lai Lai on 2009-3-28 12:04]

The standards for new types of fire-resistant doors and windows will come into effect on January 1, 2009. March 21, 2009, 09:12 – The General Administration of Quality Supervision, Inspection and Quarantine and the Standardization Committee have recently issued announcements No. 118 and 119, approving two mandatory fire safety standards. The GB16809-2008 standard for fire-resistant windows specifies aspects such as the naming, classification and coding of such products, their specifications and models, technical requirements, testing methods, inspection rules, labeling, packaging, transportation, and storage. This standard applies to steel, wooden, and steel-wood composite fire-resistant windows used for lighting purposes in buildings; other types of fire-resistant windows can also follow these guidelines. The new standard corresponds to the revision of the fire door standards, altering the fire resistance parameters of fire doors. Compared to the 1997 version of the standard, the main change is an expansion of the standard’s scope of application. The codes and names are as follows: GB12955-2008 \"Fire doors\" (replacing GB12955-1991 \"General technical requirements for steel fire doors\" and GB14101-1993 \"General technical requirements for wooden fire doors\"); GB16809-2008 \"Fire windows\" (replacing GB16809-1997). The above standards will come into effect on January 1, 2009. After more than a decade of development, the fire door industry in our country has seen significant improvements in product quality and performance, with an increase in the variety of products available. The existing standards are no longer suitable for guiding the production, quality supervision, and testing of these products. In accordance with the plan issued by the **Standardization Committee, GB12955-91 \"General Technical Requirements for Steel Fire Doors\" and GB14101-93 \"General Technical Requirements for Wooden Fire Doors\" are to be integrated and revised in order to standardize the technical requirements for various types of fire doors. During the revision process, the Tianjin Fire Research Institute of the Ministry of Public Security referred to international standards as well as those of developed countries, and conducted in-depth investigations, analyses, and studies by taking into account the situation of fire door production, installation, and use in China. The new version of the standard incorporates concepts and requirements for partially insulated fire doors and non-insulated fire doors from international and foreign standards. The classification of fire doors has been changed from being based solely on insulated fire doors to one that includes insulated fire doors (Class A), partially insulated fire doors (Class B), and non-insulated fire doors (Class C) ； At the same time, the fire resistance ratings of the original Class A, B, and C fire doors have been adjusted to 1.5 hours, 1.0 hour, and 0.5 hour respectively, which has expanded the range of fire door products available in China and provided more options for practical applications. For situations where only partial thermal insulation or fire resistance is required, fire doors with partial insulation or without insulation can be used. The new standard also stipulates that if there is filler material inside the door leaf, it must be a fire-resistant and heat-insulating material that is non-toxic and harmless to humans, in order to minimize any impact on health. These regulations not only make the installation of fire doors more rational, but also reduce the production costs and raw material consumption of fire doors, meeting the requirements of environmental protection and the development of a resource-efficient society. At the same time, the new version of the standard also includes provisions and requirements regarding steel-wood fire doors as well as fire doors made from other materials. It provides a technical basis for the use of new materials and technologies, as well as for the production and testing of new types of fire doors, thereby expanding the development opportunities for manufacturers of fire doors. Class A fire doors, also known as fully insulated fire doors, are capable of meeting both the requirements for thermal insulation and fire resistance within a specified time frame. Their fire resistance ratings are 0.5 hours (Class C), 0.10 hours (Class B), 1.5 hours (Class A), as well as 2.0 hours and 3.0 hours. Class B fire doors, also known as partially insulated fire doors, require a fire and heat insulation performance of 0.5 hours, with fire resistance integrity ratings of 1.0 hour, 1.5 hour, 2.0 hour, and 3.0 hour respectively. Class C fire doors, also known as non-insulated fire doors, have no requirements regarding thermal insulation; they only need to meet the requirements for fire resistance in terms of structural integrity over a specified period of time. The levels of fire resistance in terms of structural integrity are 1.0h, 1.5h, 2.0h, and 3.0h. British BS standards include provisions for non-insulated fire doors. The standard GB16809—2008 \"Fire-resistant Windows\" specifies the naming, classification and codes, specifications and models, technical requirements, testing methods, inspection rules, marking, packaging, transportation and storage of fire-resistant window products. It applies to steel fire-resistant windows, wooden fire-resistant windows, and steel-wood composite fire-resistant windows used for lighting purposes in buildings; other types of fire-resistant windows can also refer to this standard. The new standard, corresponding to the revision of the fire door standards, has modified the relevant fire resistance parameters for fire windows. Compared to the 1997 version of the standard, the main changes are as follows: the scope of application of the standard has been expanded ； The classification method for the fire resistance performance of fire-resistant windows has been revised in accordance with international and foreign standards; they are classified as either \"insulating (Class A)\\" or \"non-insulating (Class C)\\", with five fire resistance ratings ranging from 0.5 hours to 3.0 hours added ； The method for coding the models of fireproof windows has been clarified ； Added quality requirements and testing methods for the fire-resistant glass used in fire-resistant windows ； Added technical requirements and testing methods for the wind pressure resistance and airtightness of fire-resistant windows, the distortion degree of movable window sashes, the static operating temperature of the thermal sensors in movable fire-resistant windows, the reliability of window sash closure, and the automatic closing time of window sashes ； At the same time, the sampling methods and judgment criteria for type inspection of fireproof windows were also modified. The fire-rated doors and windows of classes A, B, and C specified in the current standards such as the **Code for Fire Protection Design of Buildings**, the Code for Fire Protection Design of High-Rise Civil Buildings, and the Code for Fire Protection Design of Civil Air Defense Projects will correspond respectively to A1.50 (Class A), A1.00 (Class B), and A0.50 (Class C) under the new standards. Once the new standards for fire doors and windows are issued, efforts will be made as soon as possible to organize training on them. Arrangements have also been made in advance to revise the rules regarding type approval. Local public security and fire departments should urge relevant manufacturing enterprises to prepare for compliance with these standards as well as for product testing. Source: China Glass Network

National standard atlas 03J609 sets requirements for both steel fire-resistant doors and windows as well as wooden fire-resistant doors and windows. It can be used as a reference until the new standards are implemented.

The fire resistance rating of fire-resistant windows is as follows: Class A windows must have a fire resistance of at least 1.2 hours, Class B windows must have at least 0.9 hours, and Class C windows must have at least 0.6 hours. Technical requirements: 1. Materials and fittings (1) The window frame shall be a steel frame or a wooden frame with sufficient strength to ensure the integrity and stability of the components. (2) The steel frame and clamping strips can be made of galvanized steel sheets or stainless steel sheets. Its material selection criteria comply with the provisions of Article 5.1 in GB12955 \"General Technical Requirements for Steel Fire Doors\". (3) The material selection standards for wooden frames and strips shall comply with the provisions of Article 5.1.1 in GB14101 \"General Technical Requirements for Wooden Fire Doors\". (4) The filling material inside steel and wooden frames should be non-combustible. (5) Fire-resistant glass can be selected from products that do not affect the successful completion of the fire resistance performance tests for fire doors. The light transmittance of the glass is not less than 75% that of ordinary flat glass with the same number of layers. (6) The sealing material between the frame and the fire-resistant glass should be a flame-retardant material that can provide fire and smoke barrier protection in case of a fire. (7) Hardware fittings should be standardized, matching products that have passed testing. II. Installation requirements: 1. During acceptance, Party A shall carefully check the quantity, specifications, grade, and ensure that all accessories are of qualified quality and complete in accordance with the supply contract. 2. For the storage of fireproof windows, they should be kept vertically in a dry indoor area, with anti-corrosion measures in place; the glass should be placed on or against objects that will not damage its edges or surface. 3. Installation: (1) Before installing the fire-resistant window, it must be inspected. If the window frame or sashes are warped, deformed, or the glass is damaged due to improper handling during transportation or storage, these issues must be repaired before installation can proceed. (2) When installing fireproof windows, it is necessary to use a level to ensure they are level, or to use string lines to adjust their verticality in all directions, so that they are horizontal, vertical, and at the same height. (3) The window frame must be integrated with the building, connected to the wall using wood or metal. After the steel window frame is installed, cement mortar must be poured between the frame and the wall, and it must be cured for more than 24 hours before it can be used normally. (4) The positions of the mounting holes for the hardware fittings should be accurate, so that the fittings can be installed smoothly and firmly to meet the usage requirements. (5) When installing fire-resistant glass, ensure that the gaps around its edges are even; after positioning it, fill and level these gaps with fire-resistant insulation, and then seal them with edge strips. (6) In addition to the requirements mentioned above, installation shall be carried out in accordance with the requirements of the \"Engineering Construction and Acceptance Specifications\"