| Amerimac Machining Corp Milling, Turning, Welding | Jackson, MS | MillingTurningWelding | - |
| Ameristar Fabricating, Inc Laser, Waterjet, Bending, Welding, Stamping, Finishing, Assembly · ISO 9001 | Mankato, MN | LaserWaterjetBendingWeldingStampingFinishingAssembly | ISO 9001 |
| Amherst Stainless Fabrication, LLC Turning, Welding, Waterjet | Buffalo, NY | TurningWeldingWaterjet | - |
| Amp Precision Metal LLC Bending, Welding | Ada, OK | BendingWelding | - |
| Amscot Structural Products Corporation Turning, Welding | Dover, NJ | TurningWelding | - |
| Anchor Fabricators Inc Laser, Punching, Bending, Welding, Stamping, Assembly | Clayton, OH | LaserPunchingBendingWeldingStampingAssembly | - |
| Anthony Machine Milling, Turning, Welding | San Antonio, TX | MillingTurningWelding | - |
| Antonio's Metal Works, Inc Welding | El Cajon, CA | Welding | - |
| Antron Engineering & Machine Co Inc Milling, Turning, Swiss, Welding, EDM, Assembly | Bellingham, MA | MillingTurningSwissWeldingEDMAssembly | - |
| Anvil Iron Works Welding | Philadelphia, PA | Welding | - |
| Ao Metalworks LLC Laser, Bending, Welding | Clearwater, FL | LaserBendingWelding | - |
| Applied Metals & Machine Works, Inc. Milling, Turning, Welding | Fort Wayne, IN | MillingTurningWelding | - |
| ARC Fabricators Bending, Welding | Sioux Falls, SD | BendingWelding | - |
| Argent Fabrication LLC Bending, Welding | Seattle, WA | BendingWelding | - |
| Argo Blower & Mfg Co Inc Bending, Welding | Seattle, WA | BendingWelding | - |
| Arizona Metal Craft Bending, Welding | Tucson, AZ | BendingWelding | - |
| Arkay Solutions Milling, Turning, Welding, Assembly | Feasterville Trevose, PA | MillingTurningWeldingAssembly | - |
| Asero Welding | Austin, TX | Welding | - |
| Astoria Wire Products Inc Milling, Laser, Punching, Bending, Welding | Bedford Park, IL | MillingLaserPunchingBendingWelding | - |
| Atd Precision Manufacturing LLC Milling, Turning, Laser, Bending, Welding, Stamping, EDM | Phoenix, AZ | MillingTurningLaserBendingWeldingStampingEDM | - |
| Atlantic Metal Products, Inc Waterjet, Bending, Welding | Topping, VA | WaterjetBendingWelding | - |
| Atlas Tool & Die Works Inc Turning, Laser, Waterjet, Welding, Stamping, EDM, Assembly | Lyons, IL | TurningLaserWaterjetWeldingStampingEDMAssembly | - |
| Atomatic Manufacturing Co Welding, Waterjet | East Pittsburgh, PA | WeldingWaterjet | - |
| Atomic Fabrications LLC. Welding | Seattle, WA | Welding | - |
| Automated Production Machining, Inc Milling, Turning, Welding, Grinding | Gordonsville, VA | MillingTurningWeldingGrinding | - |
| Awerkamp Machine Co Welding | Quincy, IL | Welding | - |
| B & D Precision Welding Milling, Turning, Welding, Grinding | Pomona, CA | MillingTurningWeldingGrinding | - |
| B&L Machine & Fabrication Inc Milling, Turning, Punching, Bending, Welding | Norfolk, VA | MillingTurningPunchingBendingWelding | - |
| Ballard Marine Fabricators Welding | Seattle, WA | Welding | - |
| Ballard Sheet Metal Works Inc. Bending, Welding | Seattle, WA | BendingWelding | - |
| BDB Fabrication Welding | Aurora, CO | Welding | - |
| Bec Machine Products Milling, Turning, Welding, Casting | Harleysville, PA | MillingTurningWeldingCasting | - |
| Belding Tool and Machine Milling, Turning, Welding, EDM, Grinding | Belding, MI | MillingTurningWeldingEDMGrinding | - |
| Belfanti Machine Works LLC Milling, Turning, Waterjet, Welding, Stamping | Beaverton, OR | MillingTurningWaterjetWeldingStamping | - |
| Ben Parker Company Bending, Laser, Welding, Waterjet | Chattanooga, TN | BendingLaserWeldingWaterjet | - |
| Benen Manufacturing LLC Milling, Turning, Welding, Finishing, Assembly · ISO 9001, ISO 13485 | San Jose, CA | MillingTurningWeldingFinishingAssembly | ISO 9001, ISO 13485 |
| Bent River Machine Inc Milling, Turning, Bending, Welding, EDM, Grinding, Finishing, Assembly · ISO 9001 | Clarkdale, AZ | MillingTurningBendingWeldingEDMGrindingFinishingAssembly | ISO 9001 |
| BK Customs Bending, Laser, Welding, Waterjet | Riverside, CA | BendingLaserWeldingWaterjet | - |
| Black Pearl Automation LLC Milling, Welding · AS9100, ITAR | Lascassas, TN | MillingWelding | AS9100, ITAR |
| Blackburn's Fabrication Milling, Turning, Bending, Laser, Welding | Columbus, OH | MillingTurningBendingLaserWelding | - |
| Blackstar CNC LLC Milling, Laser, Bending, Welding, Finishing · ISO 9001 | Merrillville, IN | MillingLaserBendingWeldingFinishing | ISO 9001 |
| Blackwater Industries Professional Limited Liability Company Welding | Toledo, WA | Welding | - |
| Bland Brothers Enterprises Milling, Welding, Assembly | Springfield, IL | MillingWeldingAssembly | - |
| Blue Arc Metalwork & Fabrication LLC Welding | Palmetto, FL | Welding | - |
| Blue Atlantic Fabricators LLC Bending, Welding | East Boston, MA | BendingWelding | - |
| Blue Collar Metalworks Welding | Newport News, VA | Welding | - |
| bo-mar Industries Bending, Welding, Waterjet | Indianapolis, IN | BendingWeldingWaterjet | - |
| Bob’s Welding, Machining & Fabrication, Inc. Bending, Welding | Anaheim, CA | BendingWelding | - |
| Boise Metal Works Welding, Waterjet | Boise, ID | WeldingWaterjet | - |
| Bollinger Atelier Milling, Waterjet, Welding, Casting | Tempe, AZ | MillingWaterjetWeldingCasting | - |