GI Duct Corner

About GI Duct Corner

A GI Duct Corner, also known as a Galvanized Iron Duct Corner or Duct Flange Corner, is a crucial component used in heating, ventilation, and air conditioning (HVAC) systems and various industrial applications. It is essentially a piece of galvanized iron sheet, typically bent at a 90-degree angle, that facilitates the connection and reinforcement of straight duct sections, allowing the ductwork to change direction.

Heres a detailed description:

Material and Construction:

• Galvanized Iron (GI): The primary material is galvanized iron, which is steel coated with a layer of zinc. This galvanization process provides excellent resistance to rust and corrosion, extending the lifespan of the ductwork, especially in environments where moisture or certain chemicals are present.
• Fabrication: GI duct corners are typically stamped or bent from galvanized steel sheets. They are designed to fit precisely with various duct flange systems, such as Transverse Duct Flange (TDF) or Traditional Duct Connectors (TDC) systems.

Purpose and Function:

• Connecting Duct Sections: The main function is to connect two straight sections of rectangular ductwork at a corner, forming a secure and airtight joint.
• Reinforcement: They provide structural integrity and reinforcement to the ductwork, especially at turns where airflow dynamics can exert pressure.
• Preventing Air Leakage: When properly installed with sealants and gaskets, GI duct corners help create a tight seal, minimizing air leakage from the duct system. This is crucial for maintaining system efficiency, ensuring proper airflow, and reducing energy consumption.
• Directing Airflow: They allow for the efficient redirection of conditioned air, exhaust air, or other gases within a building or industrial setting.

Types and Variations:

• Angle: Most commonly, they are 90-degree angles, but they can be found in other angles depending on the specific ductwork design.
• Dimensions: GI duct corners come in various sizes and thicknesses (e.g., 20mm, 25mm, 30mm, 35mm, 40mm flange sizes, with thicknesses ranging from 0.7mm to 1.5mm or more) to match different duct dimensions and system requirements.
• Shapes: While primarily used for rectangular ducts, they can be adapted or found for other duct shapes like V-shaped corners for pre-insulated ducts.
• Equal/Unequal Angle: They can be "equal angle" or "unequal angle" depending on the dimensions of the flanges.
• Specific Systems: There are corners specifically designed for TDF (Transverse Duct Flange) and TDC (Traditional Duct Connector) systems, which are common methods for joining ductwork.

Benefits:

• Durability: Due to galvanized iron construction, they are highly durable and resistant to rust.
• Efficient Airflow: Contribute to smooth and efficient airflow within the duct system by providing a well-formed corner.
• Customizable: Available in various sizes and shapes to meet diverse project needs.
• Easy Installation: Designed for relatively straightforward installation, typically involving alignment with duct sections and secure attachment.
• Low Maintenance: Generally require minimal maintenance once installed.

In essence, a GI duct corner is a small yet vital component that plays a significant role in the overall performance, efficiency, and longevity of any galvanized iron ductwork system.