| WWarren | Warren | OH | 1–19 | ◐ LIKELY ACTIVE |
| WEWayne E Westfall | Cattaraugus | NY | — | ◐ LIKELY ACTIVE |
| WWWestside Welding, Inc. | Canutillo | TX | 20–99 | ◐ LIKELY ACTIVE |
| WIWmf INC | Washington | MO | 100–499 | ◐ LIKELY ACTIVE |
| WIWyser Innovative Products, LLC | Byron Center | MI | 20–99 | ◐ LIKELY ACTIVE |
| YYork (Temtco) | York | PA | 20–99 | ◐ LIKELY ACTIVE |
| YTYoungs Tank, INC. | Boyd | TX | 20–99 | ◐ LIKELY ACTIVE |
| ZAZimmetal and Welding, LLC | Wheatland | WY | — | ◐ LIKELY ACTIVE |
| ZTZ Tech Machine, INC | Brentwood | CA | — | ◐ LIKELY ACTIVE |
| AFAble Fab N Weld LLC | Galesville | WI | — | ◇ UNVERIFIED |
| AJA & J Precision Sheet Metal | San Jose | CA | — | ◇ UNVERIFIED |
| BMBoise Metal Works | Boise | ID | — | ◇ UNVERIFIED |
| CMCp Metal Crafters, INC. | Grover | NC | — | ◇ UNVERIFIED |
| CBCustom Biogenic Systems INC | Romeo | MI | — | ◇ UNVERIFIED |
| DIDelta Iron Works INC | Detroit | MI | — | ◇ UNVERIFIED |
| HFHarris Fabrication | Topeka | KS | — | ◇ UNVERIFIED |
| HSHostetler Sales & Construction LLC | Buffalo | MO | — | ◇ UNVERIFIED |
| JVJ V Northwest INC | Canby | OR | — | ◇ UNVERIFIED |
| MIMap Industries, INC. | Clarksville | TN | — | ◇ UNVERIFIED |
| OWOehlers Welding and Fabrication, INC. | Buffalo | NY | — | ◇ UNVERIFIED |
| RMRuff Manufacturing INC | Farmington | MN | — | ◇ UNVERIFIED |
| TSTrinity Sheet Metal | Edwardsburg | MI | — | ◇ UNVERIFIED |
| 2M2M Metals LLC | Beaver Falls | PA | — | ◇ UNVERIFIED |
| 6P686 Pro Welding LLC | North Las Vegas | NV | — | ◇ UNVERIFIED |
| AIA1FAB, Inc. | Tucson | AZ | — | ◇ UNVERIFIED |
| AEAbd Enterprises INC. | Sapulpa | OK | — | ◇ UNVERIFIED |
| AFA&b Fabricating & Maintenance, INC. | Saint Marys | OH | — | ◇ UNVERIFIED |
| ALAbt, LLC | Pittsburgh | PA | — | ◇ UNVERIFIED |
| APAccelerated Production Systems, INC. | Tomball | TX | — | ◇ UNVERIFIED |
| APAccelerated Production Systems, INC. | Houston | TX | — | ◇ UNVERIFIED |
| AMAdax Machine Co., Inc | Hudson | NH | — | ◇ UNVERIFIED |
| AFAdvanced Fabworks LLC | Elwood | KS | — | ◇ UNVERIFIED |
| APAdvanced Precision Fabricators | Tulsa | OK | — | ◇ UNVERIFIED |
| ASAdvantage Steel Truss, LLC | Lake City | FL | — | ◇ UNVERIFIED |
 Aero Precision Sheet Metal, LLC | West Chazy | NY | — | ◇ UNVERIFIED |
| ALAirlock LLC | Riverton | UT | — | ◇ UNVERIFIED |
| APAir-o-fan Products | Dinuba | CA | — | ◇ UNVERIFIED |
| APAirtech Products, INC. | Tulsa | OK | — | ◇ UNVERIFIED |
| AMAlco Machine Company | Birmingham | AL | — | ◇ UNVERIFIED |
| ALAlfa Laval Heat Plt | Lykens | PA | — | ◇ UNVERIFIED |
| AIAlfiniti INC. | Winton | NC | — | ◇ UNVERIFIED |
| ASAllen Sheet Metal INC. | Tulsa | OK | — | ◇ UNVERIFIED |
| AMAllied Metal Industries INC | Newark City | NJ | — | ◇ UNVERIFIED |
| ACAlloy Custom Products LLC | Delphi | IN | — | ◇ UNVERIFIED |
| AFAlloy Fabricators, INC. | Alexis | NC | — | ◇ UNVERIFIED |
| AIAlmeda INC | Parkersburg | WV | — | ◇ UNVERIFIED |
| AWAloha Waste Systems | Puunene | HI | — | ◇ UNVERIFIED |
| APAlstom Power INC | Easton | PA | — | ◇ UNVERIFIED |
| AFAMC Fabrication, Inc. | Las Vegas | NV | — | ◇ UNVERIFIED |
| ABAmerican Boiler Works | Arlington | WA | — | ◇ UNVERIFIED |
 American Fabrication Site | Idaho Falls | ID | — | ◇ UNVERIFIED |
| AIAmerican Investors Dba Reco USA | West Columbia | SC | — | ◇ UNVERIFIED |
| ASAmeron Steel Fabrication Division | Fontana | CA | — | ◇ UNVERIFIED |
| ALAmhawk LLC | Coloma | MI | — | ◇ UNVERIFIED |
| AEAmtech Environmental CORP | Buffalo | NY | — | ◇ UNVERIFIED |
| AEAndros Engineering Corporation | Paso Robles | CA | — | ◇ UNVERIFIED |
| ASAntennamast Systems | Cascade | VA | — | ◇ UNVERIFIED |
| APAos/lochinvar Plant Expansion | Lebanon | TN | — | ◇ UNVERIFIED |
| AHApi Heat Transfer INC | Arcade | NY | — | ◇ UNVERIFIED |
| AIArchitectural & Industrial Metal Fabrication | Roswell | GA | — | ◇ UNVERIFIED |
| AMArchitectural Metal Supply Inc | Richmond | VT | — | ◇ UNVERIFIED |
| AMArchitectural Metal Supply Inc. | Richmond | VT | — | ◇ UNVERIFIED |
| ALArcron LLC | Menomonee Falls | WI | — | ◇ UNVERIFIED |
| ABAroutioun Bermperian | Sun Valley | CA | — | ◇ UNVERIFIED |
| AQAscension Quality Materials LLC - Prairieville Plant | Prairieville | LA | — | ◇ UNVERIFIED |
 Atlas Industrial Holdings, LLC | Pontiac | MI | — | ◇ UNVERIFIED |
| Atlas Industrial Manufacturing | Clifton City | NJ | — | ◇ UNVERIFIED |
| AMAus Manufacturing Company LLC | Bonifay | FL | — | ◇ UNVERIFIED |
| BWBauer Welding & Metal Fabricators | Saint Paul | MN | — | ◇ UNVERIFIED |
| BLBay LTD | Billings | MT | — | ◇ UNVERIFIED |
| BFB.D.A. Fabrications, Inc. | Bensenville | IL | — | ◇ UNVERIFIED |
| BSB.D.J. Sanchez Investments LLC | Gardena | CA | — | ◇ UNVERIFIED |
| BMBeacon Metal Fabricators, INC. | Cleveland | OH | — | ◇ UNVERIFIED |
| BEB - E Manufacturing Co., INC. | Monroe | NC | — | ◇ UNVERIFIED |
| BIBendtec INC | Duluth | MN | — | ◇ UNVERIFIED |
| BFBlack Flag Metalsmith LLC | Alachua | FL | — | ◇ UNVERIFIED |
| BFBlazer Fabricating, LLC (pawnee Plant) | Birmingham | AL | — | ◇ UNVERIFIED |
| BPBlytheville Plateworks, INC | Jackson | TN | — | ◇ UNVERIFIED |
| BMBmg Metals INC | Lynchburg | VA | — | ◇ UNVERIFIED |
| BLBoardman, LLC | Wichita | KS | — | ◇ UNVERIFIED |
| BMBodecor Metal Finishing INC | Eagan | MN | — | ◇ UNVERIFIED |
| BIBoss Industries LLC | Oswego | KS | — | ◇ UNVERIFIED |
| BEBroadwind Energy INC. | Manitowoc | WI | — | ◇ UNVERIFIED |
| BBBrock & Blevins CO INC | Chattanooga | TN | — | ◇ UNVERIFIED |
| BPBrowns Plating Service | Paducah | KY | — | ◇ UNVERIFIED |
| BMBrw Metal Industries, LLC | Houston | TX | — | ◇ UNVERIFIED |
| BCBuckley CORP | Rockland | MA | — | ◇ UNVERIFIED |
| BLBuiltrite LLC Dba Builtrite Manufacturing | Two Harbors | MN | — | ◇ UNVERIFIED |
| BSBurner Sheet Metal, LLC | El Cajon | CA | — | ◇ UNVERIFIED |
| BPBurnett Property Management, LC | Tremonton | UT | — | ◇ UNVERIFIED |
| BWBw Welding INC | Hutchinson | MN | — | ◇ UNVERIFIED |
| CTCaldwell Tanks | Louisville | KY | — | ◇ UNVERIFIED |
| CTCaldwell Tanks - Broad Street Facility | Newnan | GA | — | ◇ UNVERIFIED |
| CCCalumet Container Corporation | Chicago | IL | — | ◇ UNVERIFIED |
| CSCameron Solutions INC | New Iberia | LA | — | ◇ UNVERIFIED |
| CCamlaw | Coolidge | GA | — | ◇ UNVERIFIED |
| CTCampos Tool Supplies, L.c. | Aventura | FL | — | ◇ UNVERIFIED |
| CECanalta Enterprises LLC Dba Phillips Iron Works | Raleigh | NC | — | ◇ UNVERIFIED |
| CWCarrier Welding and Fabrication, LLC | Wilton | ME | — | ◇ UNVERIFIED |
| CECaterpillar Emissions Solutions INC | Santa Fe | NM | — | ◇ UNVERIFIED |
