Home page

Custom processing of special glass in Guangzhou, fireproof glass grade types and fire resistance duration

Release time:

Dec 18,2024

The grade types of fireproof glass are closely related to their fire resistance duration. Below are detailed classifications and explanations:

1. Grade types of fireproof glass

Classified by structure:

Composite fireproof glass (FFB): Composed of two or more pieces of fireproof glass combined with special materials in between (such as flame-retardant strips, fireproof glue, etc.), it has high strength, high air tightness, and excellent fireproof performance.

Single-layer fireproof glass (DFB): Made from a single layer of glass substrate treated specially, it features light transmission, fire resistance, and smoke isolation, suitable for fireproof partition walls and fireproof windows without thermal insulation requirements.

Classified by fire resistance performance:

Insulating fireproof glass (Class A): Meets both fire integrity and fire insulation requirements, suitable for fire separation areas that need to maintain a certain temperature difference.

Non-insulating fireproof glass (Class C): Only meets fire integrity requirements and does not have insulation performance, suitable for fire separation areas without insulation requirements.

Classified by fire resistance limit:

Class 1 fireproof glass: Fire resistance limit of 0.5 hours.

Class 2 fireproof glass: Fire resistance limit of 1 hour.

Class 3 fireproof glass: Fire resistance limit of 1.5 hours.

Class 4 fireproof glass: Fire resistance limit of 2 hours.

Class 5 fireproof glass: Fire resistance limit of 3 hours.

In addition, there are Class 6 (fire resistance limit of 0.25 hours) and Class 7 (fire resistance limit of 0.5 hours, but fire integrity is EW level), and Class 8 (fire resistance limit of 1 hour, fire integrity is EW level) fireproof glass, which may be less common in practical applications.

2. Fire resistance duration of fireproof glass

The fire resistance duration of fireproof glass varies due to differences in type and grade, typically ranging from 30 minutes to 3 hours. Specifically:

Single-layer tempered glass: Commonly used in indoor environments, with a fire resistance time of about 0.5 hours.

Laminated glass: Due to different interlayer materials, the fire resistance time ranges from 0.5 to 2 hours.

Hollow fireproof glass: Particularly suitable for the exterior walls of high-rise buildings, with a fire resistance time of up to 3 hours.

At the same time, the fire resistance duration of fireproof glass is also affected by factors such as its thickness and material selection. Therefore, when selecting fireproof glass, it is necessary to comprehensively consider its type, grade, and specific application scenarios to ensure optimal fire protection effectiveness.

3. Precautions

When selecting fireproof glass, it should be chosen based on building design and safety requirements to ensure that the selected fireproof glass's grade type and fire resistance duration meet actual needs.

The installation and maintenance of fireproof glass are also crucial. It should be installed securely, sealed well, and regularly inspected and maintained to ensure its fireproof performance is effectively utilized.

In summary, the grade type and fire resistance duration of fireproof glass are important factors to consider when selecting fireproof glass. By understanding the different types of fireproof glass and their fire resistance durations, one can better meet the fire protection needs of buildings and ensure the safety of personnel and property.

Foshan tempered glass factory custom processes laminated glass thickness categories and materials

The advantages and disadvantages of using glass brick partition walls created by Foshan tempered glass factory.