Contract machine shop and fabricator

CNC machining, welding and fabrication since 1977

Machined parts and welded sub-assemblies produced for OEMs and industrial buyers.

  • Parts from 1 oz. to over 200 lbs.
  • One-off prototypes to production runs of thousands per year
  • Machining, welding, fabrication and laser cutting

Commercial and industrial work only.

Laser cutting head glowing red as it cuts nested parts from a metal sheet on a machine table with slats
  • Made in the USA
  • Welds can be certified to AWS D1.1 by independent inspectors when a customer requires it
  • OEM customer relationships going back nearly 50 years
  • Customers from small shops to large NYSE companies

Capabilities

Four groups of operations in one Ringgold shop. Pick the one your part needs to see the machines and materials behind it.

CNC milling machine running behind a window with coolant spray, next to a control panel and a shelf of tools

CNC machining

CNC turning centers and vertical machining centers for turned and milled parts, one piece or repeat production runs.

Manual engine lathe with a four-way toolpost, chuck and tailstock handwheel, no operator in frame

Manual machining and sawing

Manual lathes and mills, grinders, drills, threaders, tapping machines and automatic band saw cutting.

Angle grinder throwing sparks while cleaning a weld on a steel tube frame

Sub-assembly and finishing

Sub-assembly of machined and fabricated parts, with heat treating, painting, zinc plating and ceramic coating offered.

Capability at a glance

Part size, order size and the numbers buyers ask about first.

Volumes
One-off prototypes to production runs of thousands of pieces per year
Lead time
We respond to customer needs
Part weight
1 oz. to over 200 lbs.
Delivery
Just-in-time

Materials

  • Steel
  • Stainless steel
  • Aluminum
  • Brass
  • Bronze
  • Gray iron
  • Ductile iron
  • Thermoplastics (UHMW)
  • Plate
  • Sheet
  • Rod
  • Tube
  • Castings
  • Structural

Equipment list

CNC and conventional machines, cutting, forming and welding equipment, grouped by process.

CategoryMachineDetails
CNCCNC turning centersLathes from 6 in. to 15 in. chucks
CNC vertical machining centers15 to 40 hp
CuttingLaser cuttingSteel plate and sheet cutting up to 5 ft. x 10 ft.
Automatic horizontal sawsUp to 12 in. x 12 in.
Forming200-ton CNC press brake
ConventionalManual lathes, vertical and horizontal mills
Grinders, drills, threaders and tapping machines
WeldingMIG welding on multiple machinesInspection available to AWS D1.1 standards

Industries we serve

OEM and industrial work across 12 industries, shipped nationwide.

  • Truck
  • Trailer
  • Wrecker
  • Valve
  • Fire hydrant
  • Construction
  • Marine
  • Military
  • Off-road vehicles
  • Communications
  • Hardware
  • Furniture

Where we ship:Nationwide

From print to production

How a job moves from your print to your dock.

  1. Call about your parts

    Call (706) 937-4128 and talk through the parts: materials, quantities, size and when you need them. Large and small sized parts and quantities are welcome.

  2. Email your drawings

    After the call, email prints and specifications to [email protected].

  3. We quote the job

    We price the work from your drawings, materials and quantities, including any finishing or sub-assembly the parts require.

  4. Production and delivery

    Parts are machined, welded or fabricated, finished as your prints call for and delivered just in time, anywhere in the country.

Hands holding a digital caliper against a small bent sheet metal part at a workbench
CNC lathe with a grooved metal shaft clamped in the chuck, tool turret behind it and control panel with emergency stop

Machined, welded and fabricated parts

Interstate Machine Works is a division of United Manufacturing Industries, Inc., about 10 miles south of Chattanooga, TN off I-75 and I-24.

Our customers include small shops ordering a single part and large NYSE companies with repeat orders. The work is commercial and industrial only, no retail sales.

Frequently asked quoting and production questions

What materials do you work with?

Steel, stainless steel, aluminum, brass, bronze, gray iron, ductile iron and UHMW thermoplastic. Raw materials come in as plate, rod, tube, sheet, bar, castings or forgings.

How many parts can you make?

Lot sizes from 1 piece to thousands of pieces. Small shops and one-off parts are welcome, and repeat orders can run on just-in-time delivery.

How large are the parts?

Parts run from 1 oz. to over 200 lbs. Call us so we can discuss specific parts. Drawings may be emailed to [email protected].

How fast do you turn around a quote?

Quotes will be provided quickly. Call (706) 937-4128 and let us know your timing needs for quotes and delivery.

Do you offer finishing?

Yes. Heat treating, painting, zinc plating and ceramic coating are offered, so the finish your print calls for can be included in the quote.

Call or email about your parts

Tell us the materials, quantities and lot sizes you are looking for and email us at [email protected]. Quotes will be returned quickly.