| 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 |
