| TSTuboscope Sheldon South Inspection Facility | Channelview | TX | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| TPTubular Perforating Manufacturing of Conroe, LTD. | Conroe | TX | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| TSTubular Steel, INC. | Hazelwood | MO | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| TSTubular Structures International, L.l.c | Mc Gregor | TX | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| TPTurning Point Custom Machine LLC | De Pere | WI | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| TMTy M. Wright | Portland | OR | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| UHUltimate Highway Sales, INC. | Palos Heights | IL | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| UPUnited Pipe & Steel | Stockton | CA | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| USUnited Spiral Pipe LLC Manufacturing Plan | Pittsburg | CA | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| UTUnity Tube, Inc. | East Palestine | OH | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| UFUniversal Fabrication, LLC | Kenner | LA | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| USU.s. Steel Tubular Products | Houston | TX | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| VVallourec | Youngstown | OH | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| VSVescom Systems, LLC | Kearny | NJ | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| VSVescom Systems, LLC | Bronxville | NY | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| WWWalter Wire Edm Service* | Downers Grove | IL | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| WFWarfield Fabrication LLC | Yoakum | TX | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| WIWebco Industries Texas Distribution Div | Orange | TX | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| WTWelded Tubes, INC. | San Antonio | TX | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| W6West 62nd Ave Holdings LLC | Denver | CO | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| WIWestfalia, INC | Bristol | CT | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| WFWG Fabricators LLC | Vero Beach | FL | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| WTWheatland Tube, LLC. | Blytheville | AR | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| WMWheeler Metals INC | Springfield | MO | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| WMWillcox Metal Fabricators, LLC | San Antonio | TX | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| WGWilliam Grant Tank & Vessell | Henderson | TX | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| WMWisconsin Metal Tech, Inc. | Richfield | WI | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| WMWisconsin Metal Tech, Inc. | Richfield | WI | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| WIWord Industries Fabrication, LLC | Tulsa | OK | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| WSWorth Steel Fabrication | Joshua | TX | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| YMYakfab Metals Inc | Oconto | WI | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| YSYankee Supply CO. | Johnston | RI | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| ZIZekelman Industries | Farrell | PA | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| ZIZekelman Industries Wheatland Tube CO | Chicago | IL | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
