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.
Stitch-Welded Elbows
Details
Stitch-Welded Elbows deliver tight, precise directional changes for dust collection and ventilation lines. Each fitting is pressed from two metal half-shells and joined by a stitch weld down the seam, creating a factory-sealed turn that holds up in demanding systems. Built with a 1.5D centerline radius (the radius equals 1.5 times the duct diameter), making them ideal for main lines and larger drops.
Route ductwork around obstacles, change direction, or reconfigure a run in seconds, and just as easily take it apart for cleaning or relocation.
Features
- Rolled-lip ends connect to Quick Clamp Clamp-Together Duct (CTD)
- Tool-free connection; no rivets, screws, or sealants needed
- 22-gauge Galvanized Steel
- Stamped and stitch-welded for a tight, factory-sealed elbow
- Available in 30, 45, and 90-degree angles
Talk to a Duct Guy or Gal
Get started on a solution tailored to your needs, or explore our range of inline separators, self-dumping hoppers, and bag houses for even more ways to optimize your workspace.


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