| TWThe Wilmington Iron and Metal Company, Inc. | Wilmington | OH | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| TCTimkensteel Corporation | Canton | OH | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| TITmk Ipsco | Brookfield | OH | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| TWTodd's Welding INC. | Fruita | CO | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| TFTrans-tex Fabricating CO. INC. | San Antonio | TX | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| TETvek Enterprises, INC. | Mingo Junction | OH | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| UUUltra USA INC | Los Angeles | CA | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| UEUnion Electric Steel CORP | Burgettstown | PA | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| UAUnited Alloys INC | Los Angeles | CA | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| USUnited States Steel Corporation | Worcester | MA | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| UTUnited Tube Corparation | Medina | OH | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| UMUniversal Machine Company INC | Paramount | CA | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
 Universal Stainless & Alloy Products INC. | North Jackson | OH | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| UWUSA Waste (monroeville Landfill) | Monroeville | PA | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| UDU.s. Dol-osha Corpus Christi Area Office | Mcallen | TX | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| UOUsdol Osha - (mobile) | Calvert | AL | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| UPUS Pipe Fabrication, LLC | Ocala | FL | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| USU.s. Steel Corporation | Fairless Hills | PA | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| VCViking Consolidated Services, Inc. | Niagara Falls | NY | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| VLViktor's Legacy Custom Gunsmithing | Fairport | OH | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| VSVinton Steel, LLC | Vinton | TX | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| VVVSP Ventures Inc. | Jackson | MI | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| WSWarren Steel Holdings, LLC (0278080015) | Warren | OH | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| WFWheel Fix It Miami CORP. | Hialeah | FL | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| WLWhisler Land Company | Sacramento | CA | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| WMWillscot Mobile Mini | Rialto | CA | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| WSWilson Structural Steel, LLC | Fenton | MO | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| WMWings Manufacturing Inc. | Mount Clemens | MI | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| WIWoodside Investment INC Dba Michael & CO | Lockeford | CA | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
| YCYagerbomb Customs LLC | Homerville | OH | Primary Metal Manufacturing331110 | — | ◇ UNVERIFIED |
