Full-Service Sheet Metal Fabrication

Our specialty sheet metal fabrication shop can handle even the most custom projects across New York and parts of Virginia. Let’s get it done.

The Lawman Group > Commercial Construction Services > Sheet Metal Fabrication

Sheet Metal Fabrication: Get the Exact Materials You Need

With our fully equipped, automated sheet metal fabrication shop right here in Watertown, NY, we’re ready to support your next commercial build, no matter how custom.

From HVAC ductwork with pinned insulation to roof curbs, architectural panels, siding, and trim, we fabricate to spec and deliver on-time. Serving contractors and facility teams across Jefferson County, Fort Drum, Sackets Harbor, Lakeville, and the greater North Country region, we offer flexible options for pickup or direct site delivery.

A collection of various metal ductwork pieces, including rectangular and square shapes, arranged in a chaotic pile.

Rectangular Duct/Fittings

✔ TDC/TDF Duct & Custom Fittings
✔ Slip/Drive Duct & Custom Fittings
✔ Materials (Galvanized, Galvanneal, Aluminum & Stainless Steel) (18 ga thru 26 ga)

Our shop produces standard and custom duct in a full range of gauges and configurations, including single-wall, double-wall, and internally insulated options. We also build fittings, transitions, and connections that meet SMACNA standards—tight seals, clean airflow, no guesswork.

Contractors across Jefferson County, Fort Drum, and Northern New York rely on us for:

  • Supply, return, and exhaust duct systems

  • Radius elbows, transitions, offsets, reducers

  • TDC/TDF and S&D connections

  • Turning vane installations

  • Lined duct with pinned or glued insulation

  • Galvanized, stainless, or aluminum finishes

  • Fabrication based on your CAD or field markups

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━ Rectangular Duct Order Form
Industrial workshop featuring blue machinery and equipment, including a large spool and a frame, set in a spacious, well-lit area.

Spiral Duct/Fittings

✔ Spiral Pipe 4” thru 26” (Even sizes only)
✔ Spiral Fittings (90’s, 45’s, o.sets, couplings, reducers, end caps & A-collars) (4” thru 48” even &
odd sizes)
✔ Materials (Galvanized, Galvanneal, Aluminum & Stainless Steel) (18 ga thru 26 ga)

When airflow efficiency, strength, and a clean install matter, spiral duct delivers, and we fabricate it right here in Watertown.

Available fittings include:

  • 90° and 45° elbows

  • Offsets and reducers

  • Couplings and end caps

  • A-collars

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━ Spiral Duct Order Form
Stacked aluminum vent hoods in an industrial workspace, showcasing a metallic finish and multiple cutouts for ventilation.

Specialty Items

Not everything fits a standard mold, so we fabricate the parts that don’t.

We produce a full range of specialty items, including:

  • Roof curbs and curb adaptors
  • Roof curb extensions
  • Equipment rails
  • Goosenecks and curb caps
  • Register boxes
  • Blank-off panels

Each item is built to match your system layout and unit specifications. Need something unusual? We’ll get the measurements and make it fit—no guesswork, no wasted time on site. All components can be delivered labeled and ready for install.

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━ Roof Curb Order Form
Industrial machinery setup with multiple rollers and a control panel, designed for processing and manufacturing operations.

Accessories

We keep the essentials in stock to support field crews and fabricators alike. From brackets to sealants, our accessory inventory is built to keep your projects moving.

Most items are available with short lead times, and we offer packaging options that align with your installation sequence.

  • Trim Angle

  • Hanger Strap

  • Slip & Drive

  • Ductmate Frame

  • Duct Seal

  • Butyl

  • Hardware

  • Single Blade Volume Dampers (Rectangular & Spiral)

Close-up of a LOCKFORMER machine cutting metal, showcasing a bright cutting tool and industrial setup in a factory environment.

Shop Equipment

Core Machinery and Forming Equipment

  • Pro-Fabriduct Coil Line – fully automated duct production

  • Cornermatic Dual Head Machine – for TDC/TDF connector fabrication

  • Whisper-Loc Seam Closer – quiet and efficient vertical seam finishing

  • Vulcan 5′ x 10′ Plasma Table – high-precision CNC cutting

  • Rotodie 10′ Press Brake – for large panel and custom bend work

  • 10′ Power Shear – straight, clean cuts across sheet metals

  • Tennsmith Power Roller – for forming smooth curves and rounds

  • Schechtl Folding Brake – precise bends with digital control

Welding and Finishing Tools

  • MIG, TIG, and Stick Welding – for steel, aluminum, and stainless

  • DuroDyne Pin Welder – insulation fastening with speed and accuracy

  • DuroDyne Spot Welder – durable welds for light-gauge metal

  • DuroDyne Insulation Cutter – clean, consistent insulation prep

  • Lockformer TDC and Triplex Cleatformers – duct connector and profile machines

  • Lockformer Snaplock and Pittsburgh Machines – for fast, reliable duct seams

  • Cheek & Cleat Bender – finishing fittings and end-work

  • Spiral Helix Gorelocker Combi-T & Spiro Tubeformer – spiral duct production and assembly

Sheet Metal Fabrication FAQ

What types of sheet metal products do you fabricate in-house?
We fabricate a full range of commercial-grade HVAC ductwork (rectangular and spiral), fittings, roof curbs, curb adaptors, register boxes, panels, and specialty items. Everything is made to spec at our fully equipped fabrication shop in Watertown, NY.
Do you offer custom fabrication for non-HVAC applications?
While much of our work supports HVAC systems, we also fabricate custom sheet metal components for general construction, roofing, and architectural projects. Just send us your specs or drawings and we’ll quote it.
What materials do you carry for duct and fittings?
We work with galvanized, galvanneal, aluminum, and stainless steel from 18 ga to 26 ga. Spiral pipe is available in 4″ to 26″ even sizes, with fittings up to 48″ in both even and odd sizes.
Can I pick up my order, or do you offer delivery?
Both options are available. Orders can be staged for local pick-up at our Watertown facility, or we can coordinate jobsite delivery depending on your location and timeline.
Which areas do you serve?
Our sheet metal fabrication shop serves contractors and facilities across Northern New York, including Watertown, Fort Drum, Sackets Harbor, Carthage, Lakeville, and the surrounding Jefferson, Lewis, and St. Lawrence counties.
Two stacks of large steel coils sit on black metal stands in a spacious industrial warehouse with machinery and shelving in the background.

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