| TMTpc Metals LLC | Bryan | OH | — | ◇ UNVERIFIED |
| TMTpc Metals, LLC | Canton | OH | — | ◇ UNVERIFIED |
| TFTrans-tex Fabricating CO. INC. | San Antonio | TX | — | ◇ UNVERIFIED |
| TITree Island Wire | Rancho Cucamonga | CA | — | ◇ UNVERIFIED |
| TSTriangle Suspension Sys | Punxsutawney | PA | — | ◇ UNVERIFIED |
| TMTrinity Machne & Fabrication | Palestine | TX | — | ◇ UNVERIFIED |
| TPTrinity Products, LLC | O Fallon | MO | — | ◇ UNVERIFIED |
| TSTri-state Shearing and Bending INC. | Brooklyn | NY | — | ◇ UNVERIFIED |
| TDTri-vet Design and Fabrication, LLC | Shenandoah | PA | — | ◇ UNVERIFIED |
 Truenorth Steel | Billings | MT | — | ◇ UNVERIFIED |
| TST S a Manufacturing | Omaha | NE | — | ◇ UNVERIFIED |
| TPTsk Partners, INC. | Erie | PA | — | ◇ UNVERIFIED |
| TCTube City Ims LLC | Portage | IN | — | ◇ UNVERIFIED |
| TETvek Enterprises, INC. | Mingo Junction | OH | — | ◇ UNVERIFIED |
| UUlbrich | Pico Rivera | CA | — | ◇ UNVERIFIED |
| USUlbrich Stainless Steels & Specialty Metals, INC. | Lagrange | GA | — | ◇ UNVERIFIED |
| UPUltra Play Systems, INC | Red Bud | IL | — | ◇ UNVERIFIED |
| UUUltra USA INC | Los Angeles | CA | — | ◇ UNVERIFIED |
| UAUnited Alloys INC | Los Angeles | CA | — | ◇ UNVERIFIED |
| UPUnited Power Generation INC | Riverside | CA | — | ◇ UNVERIFIED |
| USUnited Site Services Springfield Ma | Indian Orchard | MA | — | ◇ UNVERIFIED |
| USUnited Slings & Lifting, INC. | Tecumseh | OK | — | ◇ UNVERIFIED |
| USUnited States Steel Corporation | Worcester | MA | — | ◇ UNVERIFIED |
| UTUnited Tube Corparation | Medina | OH | — | ◇ UNVERIFIED |
| 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 - Jacksonville | Jacksonville | FL | — | ◇ 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 |
| VMVanguard Manufacturing INC | Grand Rapids | MI | — | ◇ 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 |
| WWWalker Wire & Steel CO | Pontiac | IL | — | ◇ UNVERIFIED |
| WTWallner Tooling/expac, INC. | Kennesaw | GA | — | ◇ UNVERIFIED |
| WSWarren Steel Holdings LLC | Warren | OH | — | ◇ UNVERIFIED |
| WSWarren Steel Holdings, LLC (0278080015) | Warren | OH | — | ◇ UNVERIFIED |
| WWWayne Wire Cloth Prod | Kalkaska | MI | — | ◇ UNVERIFIED |
| WAWeave Alloy Products Company | Sterling Heights | MI | — | ◇ 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 |
| WMWire Mesh Corporation | Saint Matthews | SC | — | ◇ UNVERIFIED |
| WWWire Works, INC. | Milford | CT | — | ◇ UNVERIFIED |
| WSWmc Steel Sc LLC | Saint Matthews | SC | — | ◇ 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 |
| WSWorthington Steelpac (0511005008) | North Lewisburg | OH | — | ◇ UNVERIFIED |
| WAWv Alloys Formerly Chipper | Alloy | WV | — | ◇ UNVERIFIED |
| XSXxx Sweeney Steel Products | Erie | MI | — | ◇ UNVERIFIED |
| YCYagerbomb Customs LLC | Homerville | OH | — | ◇ UNVERIFIED |
| YSYale Steel INC | Yale | MI | — | ◇ UNVERIFIED |
| YSYoungstown Specialty Metls INC | Youngstown | OH | — | ◇ UNVERIFIED |
| ZIZimkor Industries Incorporated | Littleton | CO | — | ◇ UNVERIFIED |
| ZZyklus | Jacksonville | TX | — | ◇ UNVERIFIED |
