| URUnitrac Railroad Materials INC. | Knoxville | TN | — | ◇ UNVERIFIED |
| UMUniversal Machine Company INC | Paramount | CA | — | ◇ UNVERIFIED |
| UPUniversal Pipe & Steel Supply, INC | Fort Myers | FL | — | ◇ UNVERIFIED |
 Universal Stainless & Alloy Products INC. | North Jackson | OH | — | ◇ UNVERIFIED |
| UWUSA Waste (monroeville Landfill) | Monroeville | PA | — | ◇ UNVERIFIED |
| UDU.s. Dol-osha Corpus Christi Area Office | Mcallen | TX | — | ◇ UNVERIFIED |
| UOUsdol Osha - (mobile) | Calvert | AL | — | ◇ UNVERIFIED |
| UFUS Fabrication of East Texas Incorporated | Tyler | TX | — | ◇ UNVERIFIED |
| USU. S. Pipe | Lynchburg | VA | — | ◇ UNVERIFIED |
| UPUS Pipe Fabrication, LLC | Ocala | FL | — | ◇ UNVERIFIED |
| UCUss Central Teaming Company INC | Gary | IN | — | ◇ UNVERIFIED |
| USUS Steel CORP Joliet Works | Joliet | IL | — | ◇ UNVERIFIED |
| USU.s. Steel Corporation | Fairless Hills | PA | — | ◇ UNVERIFIED |
| USUS Steel East Chicago | East Chicago | IN | — | ◇ UNVERIFIED |
| USUS Steel Gary Complex | Gary | IN | — | ◇ UNVERIFIED |
| USUS Steel - Gary Works | Chicago | IL | — | ◇ UNVERIFIED |
| UTU.s. Tubular Products | Mckeesport | PA | — | ◇ UNVERIFIED |
| VDValley Die Castings, INC. | Mcallen | TX | — | ◇ UNVERIFIED |
| VPValley Plating and Fabricating | Green Bay | WI | — | ◇ UNVERIFIED |
| VCViking Consolidated Services, Inc. | Niagara Falls | NY | — | ◇ UNVERIFIED |
| VLViktor's Legacy Custom Gunsmithing | Fairport | OH | — | ◇ UNVERIFIED |
| VSVinton Steel, LLC | Vinton | TX | — | ◇ UNVERIFIED |
| VTVoestalpine Texas LLC | Portland | TX | — | ◇ UNVERIFIED |
| VCVoss Clark D/b/a Pgp CORP | Jeffersonville | IN | — | ◇ UNVERIFIED |
| VIVoss Industries-voss Taylor Div | Taylor | MI | — | ◇ UNVERIFIED |
| VVVSP Ventures Inc. | Jackson | MI | — | ◇ UNVERIFIED |
 Wakefield Thermal Solutions INC | Fall River | MA | — | ◇ UNVERIFIED |
| WTWallner Tooling/expac, INC. | Kennesaw | GA | — | ◇ UNVERIFIED |
| WSWarren Steel Holdings LLC | Warren | OH | — | ◇ UNVERIFIED |
| WSWarren Steel Holdings, LLC (0278080015) | Warren | OH | — | ◇ UNVERIFIED |
| WFWelding Flux Facility | Niagara Falls | NY | — | ◇ UNVERIFIED |
| WCWendt Corporation | Buffalo | NY | — | ◇ UNVERIFIED |
| WEWest End Fabricators Incorporated | Richmond | VA | — | ◇ UNVERIFIED |
| WMWestern Metal Enterprises, INC. | Montebello | CA | — | ◇ UNVERIFIED |
| WHWest Homestead Engineering & Machine | Pittsburgh | PA | — | ◇ UNVERIFIED |
| WCWheeler Consolidated, INC. | Pinellas Park | FL | — | ◇ UNVERIFIED |
| WFWheel Fix It Miami CORP. | Hialeah | FL | — | ◇ UNVERIFIED |
| WWhemco/midland | Midland | PA | — | ◇ UNVERIFIED |
| WLWhisler Land Company | Sacramento | CA | — | ◇ UNVERIFIED |
| WMWillscot Mobile Mini | Rialto | CA | — | ◇ UNVERIFIED |
| WSWilson Structural Steel, LLC | Fenton | MO | — | ◇ UNVERIFIED |
| WMWings Manufacturing Inc. | Mount Clemens | MI | — | ◇ UNVERIFIED |
| WSWolf Steel U.s.a. INC. | Crittenden | KY | — | ◇ UNVERIFIED |
| WIWoodside Investment INC Dba Michael & CO | Lockeford | CA | — | ◇ UNVERIFIED |
| WAWorthington Armstron/wave - Malvern | Malvern | PA | — | ◇ UNVERIFIED |
| WIWorthington Industries | Cleveland | OH | — | ◇ UNVERIFIED |
| WIWorthington Industries - Cleveland | Cuyahoga Heights | OH | — | ◇ UNVERIFIED |
| WSWorthington Samuel Coil Processing, LLC. (1318007554) | Cleveland | OH | — | ◇ UNVERIFIED |
| WSWorthington Steel | Decatur | AL | — | ◇ UNVERIFIED |
| WSWorthington Steel Company of Decatur, L.l.c. | Decatur | AL | — | ◇ UNVERIFIED |
