Aluminum Alloy Windows

Aluminum alloy windows are windows with frames and sashes made from architectural aluminum alloy profiles. They are categorized into standard aluminum alloy windows and doors, and thermal-break aluminum alloy windows and doors. Aluminum alloy windows are aesthetically pleasing, well-sealed, and highly durable, making them widely used in the construction industry. In home renovation projects, aluminum alloy windows and doors are commonly used to enclose balconies.

The surface of the aluminum alloy has been anodized to achieve a smooth, glossy finish. The large window frames accommodate expansive glass panels, allowing ample natural light to flood the interior. This enhances the contrast between solid and transparent elements in the façade, adding depth and dimension to the living space. Aluminum alloy is easy to extrude, and the profiles feature precise cross-sectional dimensions and high manufacturing accuracy; as a result, many homeowners choose aluminum alloy doors and windows for their renovation projects.

Thickness
Aluminum alloy sliding doors come in two series: the 70 series and the 90 series. The 70 series is sufficient for interior aluminum alloy sliding doors in residential buildings. The series number indicates the structural thickness of the door frame in millimeters. Aluminum alloy sliding windows come in four series: the 55 series, 60 series, 70 series, and 90 series. The appropriate series should be selected based on the size of the window opening and local wind pressure values. Aluminum alloy sliding windows used to enclose balconies should be no less than Series 70.
Strength
Tensile strength should reach 157 Newtons per square millimeter, and yield strength should reach 108 Newtons per square millimeter. When selecting products, gently bend the profile with your hand; it should return to its original shape when released.
Color Consistency
The color of a single aluminum alloy profile should be uniform; if there is a noticeable color difference, it should not be purchased.
Flatness
Inspect the surface of the aluminum alloy profile; it should be free of dents or bulges.

Gloss
When selecting aluminum alloy doors and windows, avoid profiles with obvious defects such as open bubbles (white spots), slag (black spots), cracks, burrs, or peeling.
Oxidation
The thickness of the oxide film should be 10 micrometers. When selecting, lightly scratch the surface of the profile to see if the oxide film can be wiped off.
Specifications
7.1 The dimensions of door and window openings shall comply with the provisions of GB/T 5824, “Series of Dimensions for Building Door and Window Openings.” 

7.2 Common window opening dimensions include 1200 × 1500 mm, 1500 × 1500 mm, and 1800 × 1500 mm.