Choosing industrial ductwork shouldn’t come down to the price per foot of straight pipe. While spiral pipe may offer a lower initial material cost, US Duct and US Tubing are designed as complete systems that provide advantages in installation speed, durability, adjustability, sealing, and long-term value. This article compares spiral pipe with US Duct and US Tubing, highlighting key differences in construction, connections, leakage performance, field installation, and lifecycle costs. US Duct offers a strong, modular, adjustable solution for dust collection, most fume applications, and industrial air movement, while US Tubing provides a guaranteed leak-free connection for applications where air or fluid cannot escape. With clamp-together installation that can reduce installation time by approximately 70%, plus components that can be disassembled, modified, and reused, US Duct and US Tubing can deliver value well beyond the initial material price. The right choice ultimately depends on the system’s specific requirements for strength, sealing, installation speed, adjustability, and long-term flexibility.
Stitched Elbows
Stitch-welded elbows, or stitched halves, are galvanized metal elbows that are stamped out using mechanical presses and forming dies, resulting in a very tight elbow.
The stamping process does limit the gauge & diameter (up to 22 gauge and 1xD or 1.5xD) that can be used with this kind of elbow, so when using larger sizes, the application should be limited to light dust or air up to 8".
Available in 3-10" and 12".
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