| USUnited States Pipe and Foundry Company, LLC | — | IL | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| UTUnited Tube Bending | Montclair | CA | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| UOUsdol Osha | Cleveland | TX | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| ULUse Lawrence South | Lawrence | KS | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| UPUS Pipe | Union City | CA | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| UPUS Pipe and Fabrication | Marysville | CA | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| UPU.s. Pipe Fabrication | San Antonio | TX | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| UPUS Pipe Fabrication | Fontana | CA | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| VTVallourec Tube Alloy | Houston | TX | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| VPVan Pelt Industries, LLC | Grand Haven | MI | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| VCVanwin CORP | Kaukauna | WI | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| VMVersum Materials US LLC | Allentown | PA | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| VLViega LLC | Mantua | OH | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| VFViking Fabrication Service INC | Riverside | CA | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| WSWachs Subsea LLC | Houston | TX | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| WSWachs Subsea, LLC | Houston | TX | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| WRWatts Regulator Company | Woodland | CA | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| WLWeldsource LLC | Cypress | TX | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| WCWest Coast Fire Protection Systems Co., INC. | Auburn | CA | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| WMWheeling Machine Pine Bluff | White Hall | AR | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| WIWolf Industries INC | Portland | OR | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| YPYoungstown Pipe & Supply, LLC | Campbell | OH | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
| ZWZimex Well Products, LLC | Ontario | CA | Fabricated Metal Product Manufacturing332996 | — | ◇ UNVERIFIED |
