| ASAthens Steel | Athens | TX | — | ◇ UNVERIFIED |
| AHAti Huntsville Operations, a Division of Ati Specialty Alloys & Components, LLC | Huntsville | AL | — | ◇ UNVERIFIED |
 Ati Specialty Materials, LLC - Bakers Plant | Monroe | NC | — | ◇ UNVERIFIED |
| ASAtkore Steel Components | Coconut Creek | FL | — | ◇ UNVERIFIED |
| ACAtlantic Coast Recycling INC | Fort Pierce | FL | — | ◇ UNVERIFIED |
| ATAtlas Tube, INC. - Blytheville Plant | Blytheville | AR | — | ◇ UNVERIFIED |
| BMBarclay Machine, INC. | Salem | OH | — | ◇ UNVERIFIED |
| BHBaron Hr | Pittsburg | CA | — | ◇ UNVERIFIED |
| BPBar Processing CORP - Monroe | Monroe | MI | — | ◇ UNVERIFIED |
| BRBay Rivers Industrial | Toano | VA | — | ◇ UNVERIFIED |
| BPBaytown Plate Division | Baytown | TX | — | ◇ UNVERIFIED |
| BCBeaver Creek Cabinets, LLC | Holton | MI | — | ◇ UNVERIFIED |
| BCBender Ccp INC | Corona | CA | — | ◇ UNVERIFIED |
| BMBenzie Manufacturing LLC | Frankfort | MI | — | ◇ UNVERIFIED |
| BSBerg Spiral Pipe Corporation | Mobile | AL | — | ◇ UNVERIFIED |
| BSBigbee Steel & Tank CO | Manheim | PA | — | ◇ UNVERIFIED |
| BSB.K. Stainless, Inc | Miami | FL | — | ◇ UNVERIFIED |
| BCBlue Collar Products by Design LLC | San Antonio | TX | — | ◇ UNVERIFIED |
| BRBlue Ridge Metals Corporation | Fletcher | NC | — | ◇ UNVERIFIED |
| BRBolsinger Rebar INC | Cascade | IA | — | ◇ UNVERIFIED |
| BKBoone Kenton Machine, LLC | Erlanger | KY | — | ◇ UNVERIFIED |
| BMBralco Metals | Garland | TX | — | ◇ UNVERIFIED |
| BIBridgeport Insulated Wire CO | Stratford | CT | — | ◇ UNVERIFIED |
| BSBrodhead Steel Prod | South San Francisco | CA | — | ◇ UNVERIFIED |
| BRBrooklyn Rebar LLC | Brooklyn | NY | — | ◇ UNVERIFIED |
| BEBuck Enterprise LLC | Blythewood | SC | — | ◇ UNVERIFIED |
| BSBudd Site | Philadelphia | PA | — | ◇ UNVERIFIED |
| CCCai Custom Alloys, INC. | Belvidere | IL | — | ◇ UNVERIFIED |
| CSCalbody Steel Forming LLC | Benicia | CA | — | ◇ UNVERIFIED |
| CACaledonian Alloys INC | Monroe | NC | — | ◇ UNVERIFIED |
| CECaliber Elements, LLC | Homosassa | FL | — | ◇ UNVERIFIED |
| CECalifornia Electric Steel | Angels Camp | CA | — | ◇ UNVERIFIED |
| CECalifornia Expanded Metal Products Company | Pittsburg | CA | — | ◇ UNVERIFIED |
| CSCalstrip Steel CORP | Los Angeles | CA | — | ◇ UNVERIFIED |
| CSCalstrip Steel Corporation | Mira Loma | CA | — | ◇ UNVERIFIED |
| CSCalvert Steel LLC - Portable Plant | Ghent | KY | — | ◇ UNVERIFIED |
| CSCamblin Steel INC | Coarsegold | CA | — | ◇ UNVERIFIED |
| CSCamblin Steel INC | Oakland | CA | — | ◇ UNVERIFIED |
| CMCambridge Metals & Plastics | Cambridge | MN | — | ◇ UNVERIFIED |
| CPCampbell's Portable Buildings | Palestine | TX | — | ◇ UNVERIFIED |
| CECapital Exteriors INC. | Bismarck | ND | — | ◇ UNVERIFIED |
| CTCardinal Tool Companyy | Forney | TX | — | ◇ UNVERIFIED |
| CSCargill Steel & Wire (closed) | Nashville | TN | — | ◇ UNVERIFIED |
 Carpenter Technology Corporation | Clearwater | FL | — | ◇ UNVERIFIED |
| CCCastlebar Corporation | Canton | OH | — | ◇ UNVERIFIED |
| CMCbr Machinists INC | Laurel | MS | — | ◇ UNVERIFIED |
| CICdp Industries | Latrobe | PA | — | ◇ UNVERIFIED |
| CICentury International Arms | West Palm Beach | FL | — | ◇ UNVERIFIED |
| CTCentury Tube LLC | Madison | IN | — | ◇ UNVERIFIED |
| CSCertified Steel Company, INC. | Hamilton | NJ | — | ◇ UNVERIFIED |
| CSCGAR Stainless, LLC | Eastlake | OH | — | ◇ UNVERIFIED |
| CSChamplain Specialty Metals, INC. | Benton Harbor | MI | — | ◇ UNVERIFIED |
| CCCherry Construction Systems | Palestine | TX | — | ◇ UNVERIFIED |
| CPChris Plating | Northbrook | IL | — | ◇ UNVERIFIED |
| CDChrome Deposit Corp., Columbus Roll Shop | Columbus | MS | — | ◇ UNVERIFIED |
| CSClarion Sintered Metals | Ridgway | PA | — | ◇ UNVERIFIED |
| CDClark Dietrich Building Systems | Baytown | TX | — | ◇ UNVERIFIED |
| CSClay Smith Engineering INC | Buena Park | CA | — | ◇ UNVERIFIED |
| CECleveland Engineered Materials | Bedford Heights | OH | — | ◇ UNVERIFIED |
| CSClingan Steel, INC. | Des Plaines | IL | — | ◇ UNVERIFIED |
| CJCmc Joist and Deck | South Plainfield | NJ | — | ◇ UNVERIFIED |
| CJCmc Joist & Deck | Starke | FL | — | ◇ UNVERIFIED |
| CRCmc Rebar - Ca - Santa Fe Springs | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
| CICoast Industrial Supply CO INC | Cerritos | CA | — | ◇ UNVERIFIED |
| CCColeman Cable INC | East Longmeadow | MA | — | ◇ UNVERIFIED |
| CSCol-fin Specialty Steel Ii LLC | New Brighton | PA | — | ◇ UNVERIFIED |
| CSColorado Steel & Wire CO | Loveland | CO | — | ◇ UNVERIFIED |
| CMCombined Metals CORP | Bellwood | IL | — | ◇ UNVERIFIED |
| CMCommercial Metals Company Rebar | San Antonio | TX | — | ◇ UNVERIFIED |
| CSCommercial Steel Corporation | Glassport | PA | — | ◇ UNVERIFIED |
| CICommscope INC Sparks Nevada Facility | Sparks | NV | — | ◇ UNVERIFIED |
| CFConsolidated Fabricators CORP | Vernon | CA | — | ◇ UNVERIFIED |
| CSConsolidated Steel Svc | Englewood | CO | — | ◇ UNVERIFIED |
| CMConstruction Materials, INC. | Montgomery | AL | — | ◇ UNVERIFIED |
| CMContinental Metals INC | Lasalle | IL | — | ◇ UNVERIFIED |
| CMContinental Metals INC | Lasalle | IL | — | ◇ UNVERIFIED |
| CSContinental Steel Works, INC. | Butte | MT | — | ◇ UNVERIFIED |
| CSContractors Steel Company | Belleville | MI | — | ◇ UNVERIFIED |
| CAControlled Automation | Bauxite | AR | — | ◇ UNVERIFIED |
| CMCoronado Manufacturing LLC | Sun Valley | CA | — | ◇ UNVERIFIED |
| CMCosmos Manufacturing, INC. | South Chicago Heights | IL | — | ◇ UNVERIFIED |
| CBCountry Boyz Metal LLC | Pikeville | KY | — | ◇ UNVERIFIED |
| CBCustom Bilt Metals LLC | Whittier | CA | — | ◇ UNVERIFIED |
| CSCustom Sheet & Metal Fabricators LLC | Chattanooga | TN | — | ◇ UNVERIFIED |
| CSCustom Steel Processing, INC. | Granite City | IL | — | ◇ UNVERIFIED |
| DCDaiki Corporation | Adairsville | GA | — | ◇ UNVERIFIED |
 Dameron Alloy Foundries Dba Dafco INC | Louisville | KY | — | ◇ UNVERIFIED |
| DTDanaher Tool Group | Gastonia | NC | — | ◇ UNVERIFIED |
| DSDanick Specialties & Support, INC. | Niceville | FL | — | ◇ UNVERIFIED |
| DIDanmar Installation INC | Memphis | TN | — | ◇ UNVERIFIED |
| DHDekko Heating Technologies INC | Cromwell | IN | — | ◇ UNVERIFIED |
| DKDelaco Kasle Processing Indiana LLC | Jeffersonville | IN | — | ◇ UNVERIFIED |
| DFDelafield Fluid Technologies | Mabank | TX | — | ◇ UNVERIFIED |
| DMDelta Metals Company, INC. | Memphis | TN | — | ◇ UNVERIFIED |
| DADesign Assistance Construction Systems INC | Sparrows Point | MD | — | ◇ UNVERIFIED |
| DSD.e. Song Fabrication, LLC | Mogadore | OH | — | ◇ UNVERIFIED |
| DCDexmet Corporation - Naugatuck | Naugatuck | CT | — | ◇ UNVERIFIED |
| DGD & G Fabrication and Pipe Supports | Theodore | AL | — | ◇ UNVERIFIED |
| DGDiamond Ground Products Weldlogic INC. | Newbury Park | CA | — | ◇ UNVERIFIED |
| DIDima Industries | Elk Grove Village | IL | — | ◇ UNVERIFIED |
