Custom Sheet Metal Fabrication Shop

Our advanced 70,000 sq. ft. fabrication facility means no custom sheet metal fabrication or commercial sheet metal project is too large or too complex. The scope of our custom cut sheet metal services gives us the advantage of being a single-source provider for HVAC, process piping, and architectural sheet metal fabrication solutions.

Our experts quickly convert contract drawings into project-ready shop fabrication and field construction designs, optimizing them for manufacturability and enhancing delivery of both BIM and traditional projects.

By choosing our well-equipped fabrication facility, you can rest assured that your project will be completed on time and on budget without the hassle and delays of coordinating multiple vendors.

Industrial HVAC Ductwork, Process Piping & Architectural Products

Air Systems will design your state-of-the-art industrial architectural products, process piping, sheet metal roofs—including custom metal roofing—and fully automated HVAC ductwork from our custom sheet metal fabrication shop.

Our highly skilled Local 104 sheet metal workers are capable of producing top-quality custom cut sheet metal while meeting SMACNA standards for the largest and the smallest of projects in the San Francisco, San Jose, and Oakland metropolitan areas.

The sheet metal fabrication shop provides our Architectural Sheet Metal Division with complete in-house fabrication and prefabrication facilities.

It also produces computerized and fully automated duct and pipe fabrication for our Commercial HVAC Services Division, providing our clients with state-of-the-art, energy-efficient HVAC equipment.

Utilizing innovative procedures and modern equipment in our custom sheet metal fabrication shop, we can deliver a seamless pipe manufacturing process for our Process Piping Services Division.

Experience Delivering Custom Cut Sheet Metal Solutions

Our fabrication experts produce precisely manufactured, high-quality system components that enable increased safety, more efficient scheduling, smoother system installation, and more reliable performance.

We specialize in sheet metal fabrication and custom metal roofing solutions for projects with challenging timeframes and unprecedented specifications.

We fabricate, work with, and provide:

Spiral / Round

  • Sizes 6-38
  • Gauges, 20, 22, 24 (Other sizes and gauges available upon request)
  • Sealed (upon request)
  • Wye branches and all round fittings     

Carbon Steel Pipe

  • Grooved pipe - up to 16"
  • Welded pipe - up to 30"
  • Threaded pipe - up to 4"
  • Available in Schedule 10 and Schedule 40

Architectural Fabrication

  • Flashing
  • Roof Systems
  • Louvers


  • Ventilation systems
  • AC curbs and curb adaptors
  • HVAC duct accessories

Rectangular Duct

  • 4' and 5' lengths
  • Sealed (upon request)
  • Line
  • TDC, S&D, DM & 4 bolt connectors
  • Fittings
  • Carbon steel pipe
    • Grooved pipe - up to 16"
    • Welded pipe - up to 30"
    • Threaded pipe - up to 4"
    • Available in Schedule 10 and Schedule 40       

Process Pipe within Our Class 100 Clean Room

  • Gas panels
  • Gas boxes
  • Stainless steel pipe fabrication
  • Architectural fabrication
    • Flashing
    • Roof systems
    • Louvers



Our sheet metal fabrication shop is an automated facility complete with state-of-the-art technology, allowing for customized solutions and one-stop-shopping for projects that requires a variety of fabrication standards.

Contact us today to speak with a specialist and learn how we can be your single source for custom metal roofing, custom cut sheet metal, and custom sheet metal fabrication services.