The Basics of Ductwork Fabrication


Ductwork is crucial for distributing and circulating heated or cooled air in commercial facilities, homes, or other structures. However, ducts can be easily damaged by leaks and other issues, leading to expensive energy bills. Proper duct fabrication can prevent these problems by creating a system that’s designed for your space and built to withstand high temperatures and humidity.

A custom-made duct can also resist corrosion from chemicals and other contaminants, making it a safer alternative to prefabricated metal. Whether you need to install or replace existing ducts, a professional fabricator can meet your unique requirements.

During the layout phase, professionals use chalk lines and marking tools to mark precise measurements on sheet metal, ensuring accuracy in fabrication. Once the design is finalized, sheet metal is cut with a plasma cutter or other cutting tool according to the specifications of the project.

Next, the metal must be shaped to form the duct. Using various techniques, such as roll-forming and brake presses, the sheets are bent into the desired shape. Lock-forming machines create a standard “lock seam” joining two duct sections together, which helps to prevent air leaks. Finally, the ducts are joined to other materials and components using riveting or welding. Welding offers a strong, airtight seal suitable for high-pressure systems, while rivets are used to create a more durable mechanical bond.

Make sure your team has the right tools and equipment for ductwork fabrication. Essential tools include protective clothing to guard against sharp edges, heat, and sparks. Additionally, having a well-stocked first aid kit provides quick treatment for minor injuries that may occur during fabrication.

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