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Double Wall Round - Positive Pressure to 10"

Standard Gauge Chart


Outer Pressure Shell (O.D.)

Concealed Duct

Diameter Spiral Pipe Spiral Profile Long Seam Pipe / Fittings Standard Length
5" - 9" 26 Flat 24 10'-0"
10" - 28" 26 Flat 24 10'-0"
30" - 46" 24 Corrugated 22 10'-0"
48" - 64" 22 Corrugated 20 10'-0"
66" - 92" 20 Corrugated 18 10'-0"

Exposed Duct

Diameter Spiral Pipe Spiral Profile Long Seam Pipe / Fittings Standard Length
5" - 9" 26 Flat 24 8'-0"
10" - 28" 26 Corrugated 24 8'-0"
30" - 46" 24 Corrugated 22 8'-0"
48" - 64" 22 Corrugated 20 8'-0"
66" - 92" 20 Corrugated 18 8'-0"

Inner Liner (I.D.)

Concealed Duct

Diameter Spiral Pipe Spiral Profile Long Seam Pipe / Fittings Standard Length
3" - 9" 26 Flat 24 10'-0"
10" - 28" 26 Flat 24 10'-0"
30" - 46" 24 Corrugated 22 10'-0"
48" - 64" 24 Corrugated 20 10'-0"
66" - 90" 22 Corrugated 20 10'-0"

Exposed Duct

Diameter Spiral Pipe Spiral Profile Long Seam Pipe / Fittings Standard Length
3" - 9" 26 Flat 24 8'-0"
10" - 28" 26 Corrugated 24 8'-0"
30" - 46" 24 Corrugated 22 8'-0"
48" - 64" 24 Corrugated 20 8'-0"
66" - 90" 22 Corrugated 20 8'-0"

Standard fittings to be spot welded and sealed. Continuously welded seam fittings are available if specified. All PCD and SPOT Agion fittings are riveted and sealed.

Inner liner can be solid or perforated. Perforated material to have 3/32" holes on 3/16" staggered centers for a 23% open area.

One inch insulation layer to meet requirments set forth in NFPA pamphlet #90A as to flame spread and smoke developed. K-value at 75 degree M.T. =.26 BTU.

Available Materials

  • Galvanized G60 and G90
  • Phosphatized (Paint Grip)
  • 304L Stainless Steel
  • 316L Stainless Steel
  • Polyvinyl Coated (PCD)
  • 3003 Aluminum
  • SPOT Agion (Anti-Microbial)
  • Black Iron

Connectors

  • Standard Slip-fit / Couplings
  • SPOT Flange
  • Angle Rings
  • Spiralmate
  • Wonder Flange
  • Long Seam Weld Flange

Available Spiral Profiles


Spiral Pipe of Texas' products are manufactured in accordance with the latest SMACNA, ASHRAE and SPIDA standards. In an on-going effort to improve our products, Spiral Pipe of Texas reserves the right to revise the design and/or specifications of its products as technology advances or applicable standards change.

As we reflect on the last 30 years, we are proud of the customers we have associated with, the projects we have completed, and the positive impact we have had on our industry. To our valued customers - Your support and confidence in our team brought SPOT to this important milestone.

Thank You

For trusting us with your business. We remain committed to providing you with quality, value, and service in the years ahead.