West Michigan
2735 West River Dr NW
Walker MI 49544
T 616.475.5905
F 616.475.6433
East Michigan
32975 Schoolcraft Rd
Livonia MI 48150
T 734.261.0410
F 734.261.0435

 

round oval rectangle duct 

Products * Round and Oval Ductwork

SPIRAL PIPE

USA manufactures spiral pipe from 3" to 60" diameters in either single wall or double wall, up to 20 ft long.  We have over 2000 feet of spiral pipe in stock, ready to ship to your job site in 3" thru 24" in 10 ft lengths.

USA manufactures spiral pipe out of galvanized steel using 28 gauge through 18 gauge. Galvanneal (paint grip), PCD, aluminum, stainless steel, black iron and perforated materials are in stock.

Try USA for your spiral pipe needs and you will realize not all spiral is the same.  Give us a call on your next purchase. Call 616-475-5905 in Grand Rapids or 734-261-0410 in Detroit and ask for customer service.

We Ship nationally, so give us a chance to quote your next purchase.

ROUND FITTINGS

USA is a custom sheet metal fabrication shop with all the equipment and skilled fabricators to build any fitting you might need.  USA builds a line of standard HVAC fittings, designed to fit spiral pipe that are produced in mass quantities and stocked for your immediate pick-up.  But fast turnaround of custom fittings is our niche and how we started as a sheet metal fabricator.

USA manufactures products for many industries, standard low or high pressure HVAC systems, welded industrial exhaust systems, and medical fume exhaust systems using stainless steel or PCD materials.

Many type of fitting seams are available, spot welded, standing seam, riveted, stitch welded, solid welded, tal-lok, maplewood and more.  Joint connections are available in standard slip, Accuflanges, angle rings, Spiralmate and others, see our catalog for a complete list.

USA manufactures round fittings from 3" to 120" in diameter either single wall or double wall, out of galvanized steel using 28 gauge through 10 gauge. Other material includes Galvanneal (paint grip), PCD, aluminum, stainless steel, black iron and perforated materials in stock.

If you need round fittings let us know your application and we likely have what you need.  Call 616-475-5905 in Grand Rapids or 734-261-0410 in Detroit and ask for customer service.  Click on the PDF catalog to see a drawing of our common fittings.

We Ship nationally, so give us a chance to quote your next purchase.

 

OVAL PIPE & FITTING

USA manufactures single and double wall oval duct and fittings.  USA produces oval spiral pipe from 5"-24" minor axis in 6 ft or 10 ft maximum lengths depending on oval size.  Minor axis sizes above 24" we produce with a longitudinal seam in 5 ft lengths. USA's proprietary oval pipe and fitting manufacturing process insures the oval pipe and fittings fit together properly.  Accuflanges joint connections are recommended to join oval pipe and fittings to reduce field installation time, particularly with doublewall oval.

On certain oval sizes accuflanges or oval angle rings are required for joint connections, along with intermediate reinforements to meet SMACNA deflection requirements.  Always specify pressure class when ordering.

A rectangle to round and round to oval conversion chart is available, see our Spiral Catalog.

USA builds a line of non-welded oval fittings that are cost competitive, nice looking and appropriate, where oval pipe and fittings need to be used for exposed applications.

If you need oval ductwork, call 616-475-5905 in Grand Rapids or 734-261-0410 in Detroit and ask for customer service.  Click on the Spiral catalog to see drawings of common oval fittings and available oval sizes.

 

DOUBLE WALL ROUND AND OVAL DUCTWORK

Double wall duct and fittings are available with 1", 2", 3" or 4" thick insulation.  Standard insulation density is 1 lb per cubic ft with a thermal conductivity of .26 BTU in/hr Ft Deg F. Double wall can be made with a perforated inner liner for accoustical and thermal benefits or a sold inner liner for primarily thermal benefits.  Standard insulation used for double wall round or oval is an unfaced 1 lb density.  For additional cost, mylar or an equivalent wrap, can be applied between the perforated metal and the insulation to prevent insulation fibers from entering the air stream.  For an additional cost a faced insulation product can be used in lieu of the standard unfaced.

Accuflanges or equalivalent are recommended for double wall joint connections to reduce field installation time.

If you need double wall ductwork, call 616-475-5905 in Grand Rapids or 734-261-0410 in Detroit and ask for customer service.

 
 

OTHER PRODUCTS AVAILABLE

  • Long seam welded pipe
  • Industrial fume exhaust hoods, floor sweeps, blast gates, dust collection related fittings
  • Round roof flashings, China caps, rain collars, no-loss stacks, Butterfly (pop-up) dampers
  • Beauty rings, roof mounted pipe stands, curb caps
  • Draw bands, angle rings, and other connection devices
  • Spiral and oval hangers
  • Access doors for round applications