Our Services

At General Sheet Metal & Mechanical (GSM), we provide design, fabrication, and installation services to the Maryland and Washington D.C. areas. GSM is a woman-owned business and is dedicated to exceptional customer service. Our mission is to meet all our customers’ sheet metal fabrication needs. This is accomplished through exceptional product design and fabrication on-time and within budget. GSM has worked on steel fabrication needs for the construction, government, aerospace, and commercial industries.

General Sheet Metal Machines


General Sheet Metal & Mechanical has a professional team of talented Estimators utilizing the latest software and technologies to provide our customers with an accurate takeoff.
+ Fabrication & Equipment Design
+ Sheet Metal Design
+ Machined Parts Design


When it comes to fabrication, you need more than a company that can laser cut parts. You need a team of professional welders and fabricators to add the finishing touches. At GSM, we are able to build complex equipment or systems to field specification standards. This is critical to your industry and we deliver.

Sheet Metal Fabrication Installation


For us, it isn’t just about providing unparalleled design or quality manufacturing, we also want to see the end result. Our installation team coordinates seamlessly between engineering and manufacturing to make sure everything is to specification in your facility. This also allows us to face track projects and continue to provide quality customer service.

All Industries We Serve

At GSM, we have experience across a wide variety of industries. Our solutions not only help the industries we work in but help us to implement them in other industries as well.

+ Schools
+ Hotels
+ Hospitals
+ Labs
+ Warehouses
+ Data Centers

+ Tenant Buildouts
+ Office Buildings
+ Apartments / Condos
+ Retail
+ Restaurants / Kitchens


  • Full Coil line with 5-coils, male and female Pittsburgh attachments, TDC attachment, Tie Rod punch, liner attachment, and wrap brake
  • (2) 20’ plasma tables
  • Water jetliner table
  • Corner Machine
  • Pittsburgh auto seamer
  • (2) pin spotters
  • Spot welders
  • Large & Small Pittsburgh machines
  • Brake
  • Shear
  • Cut to length coil feeder for straps and S&D
  • 26’  & 16′ delivery trucks

Galvanized duct

  • 16g to 26g
  • Single wall, double wall
  • ½” to 4” liner
  • Galvanneal
  • Specialty Coated Sheet Metal
  • TDC, Slip & Drive, Buttweld, Pittsburgh seams

Welded Duct

  • 16g to 26g Stainless steel
  • Aluminum
  • Black iron

Miscellaneous Duct

  • Curbs, Curb adapters, rails, caps, goosenecks
  • Volume Dampers
  • Turning vanes
  • Security Bars
  • Drain Pans
  • Hanger straps
  • 16g shop angle and U channel
  • Bird screens