| CSCalvert Steel LLC - Portable Plant | Ghent | KY | — | ◇ UNVERIFIED |
| CSCamblin Steel INC | Oakland | CA | — | ◇ UNVERIFIED |
| CSCamblin Steel INC | Coarsegold | 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 |
| 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 |
| CSClarion Sintered Metals | Ridgway | PA | — | ◇ UNVERIFIED |
| CDClark Dietrich Building Systems | Baytown | TX | — | ◇ UNVERIFIED |
| CSClay Smith Engineering INC | Buena Park | CA | — | ◇ 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 |
| 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 |
| CFConsolidated Fabricators CORP | Vernon | CA | — | ◇ UNVERIFIED |
| CSConsolidated Steel Svc | Englewood | CO | — | ◇ UNVERIFIED |
| CMConstruction Materials, INC. | Montgomery | AL | — | ◇ 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 |
| 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 |
| 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 |
| DCDexmet Corporation - Naugatuck | Naugatuck | CT | — | ◇ UNVERIFIED |
| DGD & G Fabrication and Pipe Supports | Theodore | AL | — | ◇ UNVERIFIED |
| DIDima Industries | Elk Grove Village | IL | — | ◇ UNVERIFIED |
| DIDominguez Iron Work, Inc. | Miami | FL | — | ◇ UNVERIFIED |
| DIDominguez Iron Work, Inc. | Miami | FL | — | ◇ UNVERIFIED |
| DSDoral Steel, INC. | Toledo | OH | — | ◇ UNVERIFIED |
| DHDouglas-kent Holdings, LLC | Ontario | CA | — | ◇ UNVERIFIED |
| DSDouglas Steel Supply | Los Angeles | CA | — | ◇ UNVERIFIED |
| DSDunkirk Speciality Steel, LLC | Dunkirk | NY | — | ◇ UNVERIFIED |
| ESEmpire Sheet Metal, INC. | Manchester | NH | — | ◇ UNVERIFIED |
| ESEndura Steel, Inc., a California Corporation | Fort Mohave | AZ | — | ◇ UNVERIFIED |
| EWEsab Welding & Cutting Prod/hanover | Hanover | PA | — | ◇ UNVERIFIED |
| FSFab Steel, INC. | Lexington | KY | — | ◇ UNVERIFIED |
| FCFeralloy Corporation | Portland | OR | — | ◇ UNVERIFIED |
| FMFerguson Mfg. CO. INC. | Spirit Lake | IA | — | ◇ UNVERIFIED |
| FIFerret, Inc. | Elkhart | IN | — | ◇ UNVERIFIED |
| FUFerro Union | City of Industry | CA | — | ◇ UNVERIFIED |
| FMFerrousouth/ferrous Metal Transfer | Iuka | MS | — | ◇ UNVERIFIED |
| FUFilaments Unlimited INC | Rahway | NJ | — | ◇ UNVERIFIED |
| FIFlexmag Industries, INC. | Marengo | IL | — | ◇ UNVERIFIED |
| FIFloe International INC | Cambridge | MN | — | ◇ UNVERIFIED |
| FSF&M Steel Services, Inc. | Washington | UT | — | ◇ UNVERIFIED |
| FAFollansbee & Associates INC. | Blawnox | PA | — | ◇ UNVERIFIED |
| FMFrancisco's Metal | Los Angeles | CA | — | ◇ UNVERIFIED |
| FSFurnace & Steel Mill | Seguin | TX | — | ◇ UNVERIFIED |
| GSGardner Steel Corporation | New Castle | PA | — | ◇ UNVERIFIED |
| GMGateway Metals, INC. | Saint Louis | MO | — | ◇ UNVERIFIED |
| GSGeneral Steel Drum, LLC | Charlotte | NC | — | ◇ UNVERIFIED |
| GHGen H2 | Titusville | FL | — | ◇ UNVERIFIED |
| GGerdau | Oklahoma City | OK | — | ◇ UNVERIFIED |
| GAGerdau Ameristeel Us, INC. | Oklahoma City | OK | — | ◇ UNVERIFIED |
| GBGerdau Bright Bar | Cartersville | GA | — | ◇ UNVERIFIED |
| GSGold Star Holdings LLC | Byers | CO | — | ◇ UNVERIFIED |
| GMGraves Metal Products, INC. | Jackson | TN | — | ◇ UNVERIFIED |
| GMGrenada Manufacturing LLC | Grenada | MS | — | ◇ UNVERIFIED |
| GCGulf Coast Steel, INC | Houston | TX | — | ◇ UNVERIFIED |
| HVHarbor View CO | Oakland | CA | — | ◇ UNVERIFIED |
| HRHarris Rebar Nufab LLC - Ambassador Steel CORP | Slidell | LA | — | ◇ UNVERIFIED |
| HBHarvey Brothers, INC. | Cincinnati | OH | — | ◇ UNVERIFIED |
| HSHeat Shield INC. | Gladewater | TX | — | ◇ UNVERIFIED |
| HSHeidtman Steel | Erie | MI | — | ◇ UNVERIFIED |
| HSHeidtman Steel Products | Erie | MI | — | ◇ UNVERIFIED |
 High Tek Tube CORP | Denver | CO | — | ◇ UNVERIFIED |
| HCHoeganaes Corporation-riverton | Cinnaminson | NJ | — | ◇ UNVERIFIED |
| HGHolmes Group Incorporated Rival Manufacturing Division | Sedalia | MO | — | ◇ UNVERIFIED |
| HSHornsby Steel, INC. | Cleveland | AL | — | ◇ UNVERIFIED |
| HWH. Wayne Lewis INC Dba Amber Steel CO. | Rialto | CA | — | ◇ UNVERIFIED |
| ISImt Steel, LLC. | Bayonne | NJ | — | ◇ UNVERIFIED |
| IMIndustrial Metals & Mineral Company | Saxonburg | PA | — | ◇ UNVERIFIED |
| ISInterstate Steel CO | Des Plaines | IL | — | ◇ UNVERIFIED |
