| FSForney Special Products | Dallas | TX | — | ◇ UNVERIFIED |
| FSFortitude Specialty Manufacturing, LLC | Houston | TX | — | ◇ UNVERIFIED |
| FPFort Peck Tech at Ans Industries | Poplar | MT | — | ◇ UNVERIFIED |
| FEForum Energy Technologies | Midland | TX | — | ◇ UNVERIFIED |
| FEForum Energy Technologies | Guthrie | OK | — | ◇ UNVERIFIED |
| FEForum Energy Technologies | Robstown | TX | — | ◇ UNVERIFIED |
| FAFought and Company, INC. | Salt Lake City | UT | — | ◇ UNVERIFIED |
| FSFour Star Erectors, INC | San Francisco | CA | — | ◇ UNVERIFIED |
| FSFour Star Erectors, INC. | Livermore | CA | — | ◇ UNVERIFIED |
| FSFour Star, INC. | Baton Rouge | LA | — | ◇ UNVERIFIED |
| FBFran Bearing CO | Mayfield | KY | — | ◇ UNVERIFIED |
| FFFrancom Fabrication, LLC | Blanding | UT | — | ◇ UNVERIFIED |
| FIFrankenmuth Industrial Services | Frankenmuth | MI | — | ◇ UNVERIFIED |
| FCFrank's Custom Stainless | Pittsburgh | PA | — | ◇ UNVERIFIED |
| FMFredericksburg Machine & Steel LLC | Fredericksburg | VA | — | ◇ UNVERIFIED |
| FMFreeman Metal Products INC | Ahoskie | NC | — | ◇ UNVERIFIED |
| FNFrenzelit North America INC. | Lexington | NC | — | ◇ UNVERIFIED |
| FFFresno Fab Tech INC | Sanger | CA | — | ◇ UNVERIFIED |
| FCFriedrichs Custom Manufacturing, INC | Jefferson | LA | — | ◇ UNVERIFIED |
| FAFritz Air, LLC | Torrington | CT | — | ◇ UNVERIFIED |
| FMFrontier Manufacturing Company | Trenton | TX | — | ◇ UNVERIFIED |
| FRFront Range Steel INC | Fort Collins | CO | — | ◇ UNVERIFIED |
| FIFsr, INC. | Little Falls | NJ | — | ◇ UNVERIFIED |
| FEFulton Equipment | Toledo | OH | — | ◇ UNVERIFIED |
| FCFunder Custom INC | Enoch | UT | — | ◇ UNVERIFIED |
| FSFurin - Shea Welding - Fabricating INC | Kelly Lake | MN | — | ◇ UNVERIFIED |
| FTFusion Targets, LLC | Orem | UT | — | ◇ UNVERIFIED |
| FAFuture Additive Manufacturing Aerospace, Inc | Chicago | IL | — | ◇ UNVERIFIED |
| FLFuturegenx L.l.c. | Boise | ID | — | ◇ UNVERIFIED |
| FLFwt LLC | Hicksville | OH | — | ◇ UNVERIFIED |
| GMG-2 Metal Fab | Stockton | CA | — | ◇ UNVERIFIED |
| GSGalaxy Stage LLC | La Puente | CA | — | ◇ UNVERIFIED |
| GDGardner-watson Decking, INC. | Oldsmar | FL | — | ◇ UNVERIFIED |
| GMGarzo Manufacturing | Waller | TX | — | ◇ UNVERIFIED |
| GCGaskell Company INC the | Memphis | TN | — | ◇ UNVERIFIED |
| GOGastonia Ornamental Welding, INC. | Mount Holly | NC | — | ◇ UNVERIFIED |
| GIGateco, INC. | Allentown | PA | — | ◇ UNVERIFIED |
| GGGates Galore | Houston | TX | — | ◇ UNVERIFIED |
| GMGayle Manufacturing CO INC | Woodland | CA | — | ◇ UNVERIFIED |
| GSGecko Steel Truss L.l.c. | Yuma | AZ | — | ◇ UNVERIFIED |
| GMGee Manufacturing INC. | Fowler | CA | — | ◇ UNVERIFIED |
| GFGeismar Fabricators INC | Donaldsonville | LA | — | ◇ UNVERIFIED |
| GEGemco Electronics INC | Gallatin | TN | — | ◇ UNVERIFIED |
| GPGemco Portable Buildings, INC. | Bossier City | LA | — | ◇ UNVERIFIED |
| GIGem Industries, INC. | Orlando | FL | — | ◇ UNVERIFIED |
| GBGeneral Body Manufacturing | Houston | TX | — | ◇ UNVERIFIED |
| GFGeneral Fabricators, INC | Hillside | NJ | — | ◇ UNVERIFIED |
| GFGeneral Fabricators, INC | Stamford | CT | — | ◇ UNVERIFIED |
| GMGeneral Metals Mfg. & Supply CO. | Phoenix | AZ | — | ◇ UNVERIFIED |
| GSGeneral Southern Industries, INC. | Cordova | AL | — | ◇ UNVERIFIED |
| GSGeneral Supply Co., LLC | San Antonio | TX | — | ◇ UNVERIFIED |
| GIGenesis, INC | Roselle | IL | — | ◇ UNVERIFIED |
| GMGenesis Metal CORP | Beggs | OK | — | ◇ UNVERIFIED |
| GSGenzink Steel Supply & Welding Company | Holland | MI | — | ◇ UNVERIFIED |
| GSGeomembrane Services INC | Kewadin | MI | — | ◇ UNVERIFIED |
| GWGeorge's Welding Services INC. | Medley | FL | — | ◇ UNVERIFIED |
| GMGeorgia Metal Fab | Winder | GA | — | ◇ UNVERIFIED |
| GPGeorgia Pipe & Metal Fabricators, INC. | Valdosta | GA | — | ◇ UNVERIFIED |
| GAGerdau Ameristeel US INC. | Albany | GA | — | ◇ UNVERIFIED |
| GAGerdau Ameristeel US INC. | Nashville | TN | — | ◇ UNVERIFIED |
| GAGerdau Ameristeel Us, INC. | Farmersville | TX | — | ◇ UNVERIFIED |
| GLGerdau Long Steel North America | York | PA | — | ◇ UNVERIFIED |
| GRGerdau Reinforcing Steel | Lindon | UT | — | ◇ UNVERIFIED |
| GFG Fab INC | White City | OR | — | ◇ UNVERIFIED |
| GFG Fab LLC | Corvallis | OR | — | ◇ UNVERIFIED |
| GHG Highfill | Tecumseh | OK | — | ◇ UNVERIFIED |
| GHG. H. Tool & Mold, INC. | Washington | MO | — | ◇ UNVERIFIED |
| GSGibraltar Steel Corporation | Jacksonville | FL | — | ◇ UNVERIFIED |
| GSGibson Steel Fabrication | Eugene | OR | — | ◇ UNVERIFIED |
| GHGilberto Huerta Dba Gilberto's Ornamental Iron Wor | Chula Vista | CA | — | ◇ UNVERIFIED |
 Gilchrist Metal Fabricating Co., Inc. | Hudson | NH | — | ◇ UNVERIFIED |
| GSGK Steel Fabrication, LLC | Duncanville | TX | — | ◇ UNVERIFIED |
| GSGlazier Steel INC | Antioch | CA | — | ◇ UNVERIFIED |
| GWGlenmore welding works, inc. | Brooklyn | NY | — | ◇ UNVERIFIED |
| GWGlenn's Welding and Trailer Supplies | Bismarck | ND | — | ◇ UNVERIFIED |
| GLGlobal Lift Corporation | Bad Axe | MI | — | ◇ UNVERIFIED |
| GSGonsalves & Santucci, INC. Dba Conco | Walnut Creek | CA | — | ◇ UNVERIFIED |
| GSGonsalves & Santucci INC Dba the Conco Companies | Benicia | CA | — | ◇ UNVERIFIED |
| GMGonzales Mfg CO | Gonzales | TX | — | ◇ UNVERIFIED |
| GWGoodells Welding and Fabrication INC | Saint Cloud | MN | — | ◇ UNVERIFIED |
| GTGood Time Productions INC | Arkansas City | KS | — | ◇ UNVERIFIED |
| GFGordon Fabricating INC. | Wood River Junction | RI | — | ◇ UNVERIFIED |
| GSGordon Specialties INC. | Hutchins | TX | — | ◇ UNVERIFIED |
| GIGort Industries, INC. | Phoenix | AZ | — | ◇ UNVERIFIED |
| GFGp Fabrication INC. | Reidsville | NC | — | ◇ UNVERIFIED |
| GSGp Steel Fabrication | Houston | TX | — | ◇ UNVERIFIED |
| GWGranada Wrought Iron, INC. | Playa Vista | CA | — | ◇ UNVERIFIED |
| GIGratemaster INC | North Plains | OR | — | ◇ UNVERIFIED |
| GLGreat Lakes Laser Dynamics INC | Allendale | MI | — | ◇ UNVERIFIED |
| GPGreat Plains Rebar, LLC | Oklahoma City | OK | — | ◇ UNVERIFIED |
| GLGridiron LLC | Lafayette | IN | — | ◇ UNVERIFIED |
| GSGriffin Steel & Supply, L.L.C. | Goldsboro | NC | — | ◇ UNVERIFIED |
| GSGriffis Steel Company, INC. | Darien | GA | — | ◇ UNVERIFIED |
| GCGrimes Commercial Properties LLC | Tomball | TX | — | ◇ UNVERIFIED |
| GIGrimmfab, INC. | Yucaipa | CA | — | ◇ UNVERIFIED |
| GMGriswold Machine & Engineering INC (plant #1) | Union City | MI | — | ◇ UNVERIFIED |
| GSGroup Steel Inc. | Miami | FL | — | ◇ UNVERIFIED |
| GFGSS Fabrication Group LLC | Basalt | CO | — | ◇ UNVERIFIED |
| GTGtc Technology | Euless | TX | — | ◇ UNVERIFIED |
| GIGuidry Iron Works INC | Lafayette | LA | — | ◇ UNVERIFIED |
