| FWFantom Wire INC | Elk River | MN | — | ◇ UNVERIFIED |
| FAFargo Assembly of Pa., INC. | Atchison | KS | — | ◇ UNVERIFIED |
| FSFarwest Steel Post Tensioning Company | Portland | OR | — | ◇ UNVERIFIED |
| FLFast Lane Processing & Fabrication LLC | Milliken | CO | — | ◇ UNVERIFIED |
| FTFast Truss Connection | Miami | FL | — | ◇ UNVERIFIED |
| FAFathom and Form, LLC | Los Angeles | CA | — | ◇ UNVERIFIED |
| FIFcf INC | Shreveport | LA | — | ◇ UNVERIFIED |
| FLFe26 LLC | Gastonia | NC | — | ◇ UNVERIFIED |
| FMFederal Metals, INC | Tulsa | OK | — | ◇ UNVERIFIED |
| FSFederal Steel & Erection CO | East Alton | IL | — | ◇ UNVERIFIED |
| FWFeese Welding & Iron | Liberal | KS | — | ◇ UNVERIFIED |
| FSFence Solutions INC. | Enid | OK | — | ◇ UNVERIFIED |
| FIFenceworks INC | Bakersfield | CA | — | ◇ UNVERIFIED |
| FSFenix Storefront & Signs LLC | Corona | NY | — | ◇ UNVERIFIED |
| FIFerrofab INC. | Hamlet | NC | — | ◇ UNVERIFIED |
| FIFibercon International, INC. | Evans City | PA | — | ◇ UNVERIFIED |
| FLFibracan, LLC | Tucson | AZ | — | ◇ UNVERIFIED |
| FMFife Metal Fabricating INC | Redding | CA | — | ◇ UNVERIFIED |
| FFFine-Line Fabrications, LLC | Oostburg | WI | — | ◇ UNVERIFIED |
| FFFine-Line Fabrications, LLC | Oostburg | WI | — | ◇ UNVERIFIED |
| FFFine-Line Fabrications, LLC | Oostburg | WI | — | ◇ UNVERIFIED |
| FLFinish Line Powder Coating | Yakima | WA | — | ◇ UNVERIFIED |
| FSFinkles Studio | Rockport | TX | — | ◇ UNVERIFIED |
| FSFino's Screen & Aluminum Company | Port Saint Lucie | FL | — | ◇ UNVERIFIED |
 Fireblast Global INC Dba Fireblast 451 INC | Murrieta | CA | — | ◇ UNVERIFIED |
| FFFireside Fabrication LLC | Thomson | GA | — | ◇ UNVERIFIED |
| FRFirst Rate Industries, LTD | Saint Marys | OH | — | ◇ UNVERIFIED |
| FSFirst Source Fabricating, Inc. | Cincinnati | OH | — | ◇ UNVERIFIED |
| FSFischer Steel CORP | Memphis | TN | — | ◇ UNVERIFIED |
| FMFisher Metal Products INC | Visalia | CA | — | ◇ UNVERIFIED |
| FMFixture Manufacturing Corp-winner Road | Kansas City | MO | — | ◇ UNVERIFIED |
| FFF-k Fab Group, LLC | Belle Chasse | LA | — | ◇ UNVERIFIED |
| FBFlashing By Design, Inc | North Branch | MN | — | ◇ UNVERIFIED |
| FLFlexible Lifeline Systems, INC. | Chopin | LA | — | ◇ UNVERIFIED |
| FLF L Heughes & CO INC | Rochester | NY | — | ◇ UNVERIFIED |
| FMFlorida Metal Craft, INC. | Winter Garden | FL | — | ◇ UNVERIFIED |
| FSFlotation Systems, INC. | Cullman | AL | — | ◇ UNVERIFIED |
| FUFlsmidth USA | Wytheville | VA | — | ◇ UNVERIFIED |
| FLFmc2 LLC | Howell Township | NJ | — | ◇ UNVERIFIED |
| FMF & M Steel Fabricators INC | Vallejo | CA | — | ◇ UNVERIFIED |
| FFord-gelatt | Baton Rouge | LA | — | ◇ UNVERIFIED |
| FSFortitude Specialty Manufacturing, LLC | Houston | TX | — | ◇ UNVERIFIED |
| FPFort Peck Tech at Ans Industries | Poplar | MT | — | ◇ UNVERIFIED |
| FEForum Energy Technologies | Guthrie | OK | — | ◇ UNVERIFIED |
| FEForum Energy Technologies | Midland | TX | — | ◇ 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 |
| FWFranklin Wire Works | Belvidere | IL | — | ◇ UNVERIFIED |
| FCFrank's Custom Stainless | Pittsburgh | PA | — | ◇ UNVERIFIED |
| FPFrasier-Campbell Properties LLC | York | PA | — | ◇ UNVERIFIED |
| FMFredericksburg Machine & Steel LLC | Fredericksburg | VA | — | ◇ UNVERIFIED |
| FWFreedom Wire Products LLC | Celestine | IN | — | ◇ 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 |
| FTFusion Targets, LLC | Orem | UT | — | ◇ UNVERIFIED |
| FLFuturegenx L.l.c. | Boise | ID | — | ◇ UNVERIFIED |
| FLFwt LLC | Hicksville | OH | — | ◇ UNVERIFIED |
| GMG-2 Metal Fab | Stockton | CA | — | ◇ UNVERIFIED |
| GIG3 Industries | Mosinee | WI | — | ◇ UNVERIFIED |
| GSGalaxy Stage LLC | La Puente | CA | — | ◇ UNVERIFIED |
| GDGardner-watson Decking, INC. | Oldsmar | FL | — | ◇ UNVERIFIED |
| GMGarzo Manufacturing | Waller | TX | — | ◇ 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 |
| 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 |
| GWGeorge's Welding Services INC. | Medley | FL | — | ◇ UNVERIFIED |
| GMGeorgia Metal Fab | Winder | GA | — | ◇ UNVERIFIED |
| GPGeorgia Pipe & Metal Fabricators, INC. | Valdosta | GA | — | ◇ UNVERIFIED |
| GDGerard Daniel Worldwide | Ontario | CA | — | ◇ UNVERIFIED |
| GAGerdau Ameristeel US INC. | Nashville | TN | — | ◇ UNVERIFIED |
| GAGerdau Ameristeel US INC. | Albany | GA | — | ◇ UNVERIFIED |
| GAGerdau Ameristeel Us, INC. | Farmersville | TX | — | ◇ UNVERIFIED |
| GLGerdau Long Steel North America | York | PA | — | ◇ UNVERIFIED |
