Aluminum spiral ductwork produced on our State-of-the-Art Betech pipe machine, is the ultimate in pressure tight circular tubes of superior quality. It consists of a smooth interior for low friction loss and a 4-ply lockseam entirely on the outside for high strength and rigidity.
Sizes and Gauges:
4” – 10” are available in 1 inch increments
12” – 64” are available in 2 inch increments
SMACNA 2005 3rd edition gauges will be used unless otherwise specified.
Elbows will have a radius which is 1-1/2 times the diameter (long radius) to centerline is standard.
Fitting ends are made with two inch male sleeves with a stop-bead up to 36” in diameter.
Fittings will be welded.
Fittings are machine cut on our State-of-the-Art Vulcan Plasma table, assuring manufacturing tolerance consistency.
Specialty configurations are available upon request. Some examples are as follows: Elbows (75, 15 and other degree angles are also available), a wide variety of different radii are available. Flange connections are available by the following, but not limited to: Angle Rings or, AccuDuct, Spiral Mate.
As listed in the current SMACNA HVAC Duct Construction Standards. Other regulatory construction standards are available upon request.