GB15763.1-2009 Safety Glass for Buildings is a standard specification for fire-resistant glass. The standard provides clear and explicit textual explanations on the classification, marking, thickness, etc. of fire-resistant glass, which is concise and straightforward. It plays a significant role in regulating the market and helping consumers understand the knowledge of fire-resistant glass products. There are many terms for fire-resistant glass, and there are also various types and thicknesses.
Fire-resistant glass is mainly divided into two categories: heat-insulating and non-heat-insulating fire-resistant glass.
Heat-insulating and fire-resistant glass, as stipulated by the standard, is represented by FFB, which means that the category of heat-insulating and fire-resistant glass sold on the market must be indicated on the product. For heat-insulating fire-resistant glass, it can be further classified into Grade A and Grade B. The thickness range of heat-insulating and fire-resistant glass is from 5 to 35 millimeters, but not every thickness is a commonly used product in actual building applications. The common thicknesses of Grade A heat-insulating and fire-resistant glass are: 30 millimeters and 35 millimeters. Grade B heat-insulating and fire-resistant glass is 26 millimeters. Heat-insulating and fire-resistant glass can be customized in large sizes of 1500*2000mm.
Non-insulating fire-resistant glass, denoted as DFB, does not have a classification of grade A or B in its types. It is only classified by fire resistance time: 1 hour, 1.5 hours, 2 hours, etc. In the thickness range of 5 to 19 millimeters, 5 millimeters, 6 millimeters, 8 millimeters, 10 millimeters, 12 millimeters, 15 millimeters and 19 millimeters are commonly used in construction. The large size can be customized to 2400*4200mm.
In addition to the differences in size and thickness between heat-insulating and non-heat-insulating fire-resistant glass, their processing techniques are also different. The main feature of heat-insulating type lies in the application of transparent fire-resistant liquid, while non-heat-insulating type is mainly obtained by combining physical and chemical methods to replace elements. In terms of application areas, the two are also different. Heat-insulating and fire-resistant glass is mainly used in places that avoid direct sunlight and have heat insulation requirements. Non-insulating fire-resistant glass can be used both indoors and outdoors as long as it meets the fire resistance limit requirements. It is a product with a long service life, high cost performance and strong reprocessability. Single-pane fire-resistant glass is one of its representatives. Through reprocessing, it can also be made into laminated, insulating and other structural forms. Its product features can meet the requirements of special places.
