Spiral Pipe and Fittings: Flipbook

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Product List


Single Wall Spiral Pipe Specifications

Sheet Metal Connectors, Inc. spiral pipe is formed from a coil of metal into a rigid steel tube with a 4-ply spiral lockseam. It has smooth interior for low friction loss with the grooved seam entirely on the outside. This pipe has a resistance to crushing approximately 2 1/2 times that of longitudinal lockseam or welded pipe. Optional corrugations are available which increase the rigidity of the pipe by approximately 300%. Pipe sections can be joined together by an E-Z Flange with Barrel Clamp, E-Z Flange Jr. with Barrel Clamp, Standard Spiral Pipe Connector, or Companion Angle Rings.


  *PVS specification book available
  ** Call factory for sizes over 60” in diameter.


Single Wall Fittings

SMC spiral fittings are manufactured with an elbow lock seam, lap seam (i.e. tack welded, solid weld, or riveted), standing seam or butt weld seam. These may be with or without duct sealant.

All fittings can be manufactured with:

  • E-Z Flange Jr. with Barrel Clamp – 6” to 24” Diameter

  • E-Z Flange with Barrel Clamp – 26” to 96” Diameter
  • Standard Spiral Pipe End
  • Companion Angle Ring

Note: SMACNA Testing and Research Institute verified that Sheet Metal Connectors, Inc.
Shop standards comply with the 1995-2nd edition of the SMACNA HVAC Duct Construction Standards.

spiral-pipe-single-wall-specs-only.pdf64.45 KB
spiral-pipe-and-fittings.pdf17.87 MB

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