Corner Codes in the Market: Types and Features

"Corner Codes in the Market: Types and Features"

September 20, 2024. Currently, there are three main types of mainstream corner codes in the market: sawn aluminum profile corner codes, cast aluminum corner codes, and adjustable corner codes, each with its own advantages.

Let's start with sawn aluminum profile corner codes. Widely used in engineering, the width of the profile cavity determines its specification, and the height determines the cutting size. A 6-meter-long aluminum alloy profile can be processed into hundreds of such corner codes. It supports two mechanical corner assembly methods. One is corner crimping (corner impact) assembly. The corner assembly machine punctures the aluminum profile and clamps it to the corresponding position of the corner code in the profile cavity for connection. This requires a large corner assembly machine, so frame assembly must be done in the processing workshop and then transported to the installation site. The other is pin corner assembly. The pin is wedged into the corresponding position on the corner code through the profile opening, making the 45-degree angle cut surfaces of the two sides of the profile fit tightly. This can be done with a small pin gun and can be carried out at the installation site, reducing transportation costs and avoiding corner loosening during transport. Glue injection between the corner code and profile can bond them permanently, making the corner assembly more firm and enhancing sealing. Due to the hollow structure of aluminum alloy corner codes, a flow guide plate is needed. Full glue injection is marked by glue flowing out from pin holes or where the profile is punctured.

Adjustable corner codes, composed of two pieces and connected by screws, are simple, economical, and practical, widely used in the retail industry. The installation is easy. Press the cylindrical positioning devices on both sides to insert the corner code into the profile cavities. Then, the bolts connecting the two parts are tightened with a screwdriver. Like the pin corner assembly of the first two types, it can be done at the installation site without a special pin gun. However, its stability as a split structure connected by bolts remains to be proven over time.

In theory, all corner codes can be glued during assembly, but in practice, glue injection for adjustable corner codes is rare. Generally, glue injection is done for aluminum alloy and cast aluminum corner codes to improve window strength, sealing performance, and service life.