Aluminium Door Company :The Secrets of Door Angle Composition

November 06, 2023

People tend to focus on aspects such as aluminum extruded profiles, metal hardware, or glass when considering windows and doors, often overlooking the importance of angle composition.

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Typically, people tend to focus on aspects such as aluminum extruded profiles, metal hardware, or glass when considering windows and doors, often overlooking the importance of angle composition.

Angle composition, also known as angle combination, plays a crucial role in determining the quality of aluminum window frame sections and doors.

This method involves the assembly of two aluminum profiles to form corners, which are essential for reinforcing the structural integrity of windows and ensuring their stability and resistance to external forces such as impact and wind pressure.


There are three commonly used angle assembly methods, each with its own advantages and disadvantages, tailored to different needs and environments:

1.Joint Duct Corners:

Joint duct corners utilize a series of springs, screws, and nuts to create a symmetrical structure connected by screws and nuts. While this method allows for easy installation and detachment on-site, it may lack compactness, potentially leading to issues such as water leakage, spring rust, and ruptures, compromising frame stability. Although obsolete in the mid to high-end market, it remains prevalent in the lower-priced segment due to cost considerations.

2.Ram Corners:

Ram corners involve inserting corners into profiles, applying glue, and then using impact machines for pressing and punching. This method is cost-effective and widely used across various market segments.

3.Pin & Glue Injection:

Pin & glue injection stands out as the superior method among the three, recognized for its effectiveness and stability. By utilizing pins and glue injection, corners and profiles are securely bonded, ensuring compatibility and stability.


In summary, while different angle assembly methods offer varying levels of performance, pin & glue injection emerges as the most reliable and preferred option for ensuring the structural integrity and stability of aluminum windows and doors.


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