Spiral Duct

Spiral Duct

 Spiral duct is a rigid spirally wound tube manufactured of steel metal, most often galvanized steel, but also: stainless steel, aluminum or copper.

    Material

  • Galvanized steel, 24-gauge thickness for standard applications
  • Aluminum or stainless steel available upon request

    Dimensions

  • [Specify diameter range or exact size]

    Construction

  • Helically formed with smooth interior for efficient airflow
  • Seam: Continuous lock seam or welded seam for strength

Specifications:

    Sealing
  • Joints sealed with mastic or UL-listed tape
    • Insulation (if applicable):
  • Fiberglass insulation, 1" thickness
  • Aluminum jacketing, standard
    • Supports:
  • Hangers spaced at [Specify] intervals
  • Brackets welded or bolted securely to structure
    • Accessories:
  • Access doors for maintenance
  • Volume control dampers as required
    • Finish:
  • Galvanized coating meeting ASTM standards
  • Clean interior, free from burrs
    • Quality Assurance:
  • Fabricated by certified sheet metal contractors
  • Random inspections for quality control
    • Installation:
  • Comply with SMACNA standards and local codes
  • Install per approved drawings and manufacturer guidelines