Aluminum-clad Steel Fireproof Glass Windows: The Perfect Combination of Safety And Performance

Aluminum-clad steel fireproof glass windows are a type of composite special door and window, which is composed of an outer aluminum profile and an inner steel layer, and is filled with special glass with fireproof function. This design cleverly combines the lightweight corrosion resistance of aluminum with the high strength of steel, and at the same time, through the flame retardant properties of fireproof glass, it forms a safety barrier with fireproof, heat-insulating and impact-resistant properties. Its fireproof time can usually reach 1-2 hours.

Aluminum-clad steel fireproof glass windows are a type of composite high-performance doors and windows, whose structural design takes into account fire safety, mechanical strength and aesthetics. Its core structure can be divided into four parts: frame system, fireproof glass, sealing components and hardware accessories. Each part has been specially processed to ensure that the overall fireproof performance meets national standards.

Frame system: aluminum-steel composite structure

1. Outer aluminum profile

Material: High-strength aluminum alloy (such as 6063-T5), the surface is anodized, electrophoretic or powder sprayed, corrosion-resistant and anti-oxidation.

Function: Provide lightweight support, adapt to a variety of architectural styles, and protect the internal steel from environmental erosion.

2. Inner steel lining (steel core)

Material: Generally cold-rolled galvanized steel plate or fire-resistant special steel, the thickness is usually 1.2~2.0mm.

Function: Enhance the overall impact resistance and fire resistance stability, and ensure that the frame does not deform or collapse during a fire.

3. Thermal insulation bridge design (optional)

Some high-end products add PA66 nylon insulation strips between the aluminum-steel bonding layer to reduce heat conduction and improve energy-saving performance.

Fireproof glass: multi-layer composite flame-retardant structure

The core fire barrier of aluminum-clad steel fireproof glass windows, common types include:

1. Cesium potassium fireproof glass (single-piece type)

Structure: single-layer high-strength glass, after special chemical treatment (immersion in cesium potassium solution), a dense insulation layer is formed on the surface when encountering fire.

Fireproof time: usually 1~2 hours (Class C fireproof).

2. Composite fireproof glass (multi-piece type)

Structure: It is made of two or more layers of glass + transparent fireproof glue (such as sodium silicate gel). During a fire, the glue layer foams and expands to isolate heat.

Advantages: It has both sound insulation and UV protection functions, and the fireproof time can reach 1.5~3 hours (Class A fireproof).

3. Hollow/laminated fireproof glass (multi-functional type)

Structure: Fireproof glass and ordinary glass are combined into a hollow layer or PVB laminated layer to improve thermal insulation and noise reduction performance.

Sealing and fireproof filling materials

1. Fireproof expansion seals

Material: Graphite or silicone substrate, expands when heated (up to 5-10 times the original volume), fills the window gaps, and prevents smoke and flames from penetrating.

2. Refractory mud/rock wool filling

Used in frame cavities or glass edges to enhance overall fireproof integrity.

Hardware accessories: key components that are resistant to high temperatures

The hardware of fireproof windows must pass fire resistance tests (such as GB/T 12553) to ensure normal operation during fires:

Fireproof hinges: Made of stainless steel, resistant to high temperatures and not deformed.

Multi-point locking system: Enhances airtightness and prevents hot air from rushing open the window.

Thermal self-closing device (optional): Automatically closes the window when high temperatures are detected.

Core features of aluminum-clad steel fireproof glass windows：

1. Excellent fireproof performance

Fireproof glass is treated with a special process to form an insulation layer when exposed to high temperatures, effectively delaying the spread of fire; the aluminum-clad steel structural frame remains stable at high temperatures, avoiding glass shedding caused by deformation and ensuring the integrity of the escape route.

2. High strength and durability

The steel core provides strong pressure and wind resistance, and the outer aluminum is anodized or powder-coated, corrosion-resistant and aging-resistant, suitable for harsh environments such as coastal areas and high humidity.

3. Multifunctional integration

In addition to fireproofing, some products can integrate functions such as sound insulation, heat insulation, and UV protection. The addition of hollow or Low-E glass further reduces energy consumption and meets green building standards.

4. Beautiful and flexible customization

The aluminum surface can be customized in a variety of colors and textures to suit different architectural styles such as modern and industrial; it supports large-size design to meet the needs of lighting and visual transparency.

5. Easy maintenance

The structural design simplifies the cleaning and maintenance process, and the long-term use cost is low.

Typical application scenarios of aluminum-clad steel fireproof glass windows:

1. Public buildings and crowded places

Such as shopping malls, hospitals, schools, airports, etc., its fireproof performance can ensure the safety of personnel evacuation in emergency situations and meet the requirements of fire regulations.

2. Industrial and storage facilities

Applicable to areas with fire risks such as chemical plants, data centers, warehouses, etc., to isolate fire sources and reduce property losses.

3. High-rise residential and commercial complexes

High-rise buildings have strict requirements on the fire protection level of doors and windows. Aluminum-clad steel fireproof windows can be used with curtain wall systems to take into account safety and appearance uniformity.

4. Historical building renovation

While retaining the traditional appearance, the safety factor is improved through concealed fire protection design to meet the special needs of cultural heritage protection.