| MSMetro Steel & Pipe Supply, INC. | Tavares | FL | — | ◇ UNVERIFIED |
| MIMetzgermoore, INC. | Atlanta | GA | — | ◇ UNVERIFIED |
| MIMgf Industries | Rockford | IL | — | ◇ UNVERIFIED |
| MIMgf Industries LLC | Rockford | IL | — | ◇ UNVERIFIED |
| MMMicron Manufacturing Inc. | LaGrange | OH | — | ◇ UNVERIFIED |
| MCMid Continent Steel & Wire, INC. | Poplar Bluff | MO | — | ◇ UNVERIFIED |
| MFMid-west Fabricating Co, West Bent Bolt | Santa Fe Springs | CA | — | ◇ UNVERIFIED |
| MIMidwest Industrial Contract Services LLC | Youngstown | OH | — | ◇ UNVERIFIED |
| MIMidwest Industrial Contract Services, LLC | Girard | OH | — | ◇ UNVERIFIED |
| MIMiranda Iron Works Inc. | Lake Elsinore | CA | — | ◇ UNVERIFIED |
| MSMiss Steel LLC | Clifton Park | NY | — | ◇ UNVERIFIED |
| MSMiss Steel LLC | Mechanicville | NY | — | ◇ UNVERIFIED |
| MAMj Associates Steel Co., INC. | Philadelphia | PA | — | ◇ UNVERIFIED |
| MIMK Industries, LLC | Seattle | WA | — | ◇ UNVERIFIED |
| MMM & M Precision LLC | Lockport | NY | — | ◇ UNVERIFIED |
| MWMoffat Wire & Display, INC. | Addison | IL | — | ◇ UNVERIFIED |
| MIMtm Industrial | Oceanside | CA | — | ◇ UNVERIFIED |
| MEMvi Engineering & Manufacturing INC | Ontario | CA | — | ◇ UNVERIFIED |
| MAMzg Associates Ii LLC | Chicago Heights | IL | — | ◇ UNVERIFIED |
| NPNamco Precision Corp | Seattle | WA | — | ◇ UNVERIFIED |
| NMNational Material Processing, LLC | Chicago | IL | — | ◇ UNVERIFIED |
| NSNational Standard Company | Mishawaka | IN | — | ◇ UNVERIFIED |
| NWNational Wire & Cable CORP | Los Angeles | CA | — | ◇ UNVERIFIED |
| NANew Age Design & Tool, Inc. | Lagrange | OH | — | ◇ UNVERIFIED |
| NANorth American Stainless | Ghent | KY | — | ◇ UNVERIFIED |
| NSNorth South Machinery INC. | La Mirada | CA | — | ◇ UNVERIFIED |
| NSNorth Star Steel Arizona | Golden Valley | AZ | — | ◇ UNVERIFIED |
| NSNorthwestern Steel & Wire CO | Rock Falls | IL | — | ◇ UNVERIFIED |
| NCNucor Castrip Arkansas, LLC | Blytheville | AR | — | ◇ UNVERIFIED |
| NCNucor Corporation Steel Mill | Plymouth | UT | — | ◇ UNVERIFIED |
| NDNucor Dc Warehouse | Birmingham | AL | — | ◇ UNVERIFIED |
| NSNucor Steel Longview | Longview | TX | — | ◇ UNVERIFIED |
| NSNucor Steel West Virginia LLC | Apple Grove | WV | — | ◇ UNVERIFIED |
| NWNutmeg Wire, INC. | Baltic | CT | — | ◇ UNVERIFIED |
| OWO'brien Wire Products of Texas, INC. | Houston | TX | — | ◇ UNVERIFIED |
| OFOil Field Pipe and Supply CO. | Springfield | MO | — | ◇ UNVERIFIED |
| OKO & K American CORP. | Chicago | IL | — | ◇ UNVERIFIED |
| OGOld Guard Industrial Group, LLC | Indianapolis | IN | — | ◇ UNVERIFIED |
| OMOlympic Metal Cutting | Montebello | CA | — | ◇ UNVERIFIED |
| OPOmni Products, INC. | Lincolnton | NC | — | ◇ UNVERIFIED |
| OROttawa River Steel | Detroit | MI | — | ◇ UNVERIFIED |
| OSOutokumpu Stainless USA LLC | Haverhill | MA | — | ◇ UNVERIFIED |
| PCParamit Corporation | Morgan Hill | CA | — | ◇ UNVERIFIED |
| PMParker Metals | Worcester | MA | — | ◇ UNVERIFIED |
| PTPatterson Tubular Services | Liberty | TX | — | ◇ UNVERIFIED |
| PWPaul Wilke & Son, INC. | Cincinnati | OH | — | ◇ UNVERIFIED |
| PSPennsylvania Sintered Metals INC | Emporium | PA | — | ◇ UNVERIFIED |
| PUPetmin USA Incorporated (0204012023) | Ashtabula | OH | — | ◇ UNVERIFIED |
| POPhlebotomists on Wheels | Pompano Beach | FL | — | ◇ UNVERIFIED |
| PSPhoenix Services LLC Pig Iron Caster | Gary | IN | — | ◇ UNVERIFIED |
| PMPrecision Machine Shop Inc | Houston | TX | — | ◇ UNVERIFIED |
| PTPrecision Tooling Technologies, LLC | Zeeland | MI | — | ◇ UNVERIFIED |
| PWPrecision Wire Cut, INC. | Waterbury | CT | — | ◇ UNVERIFIED |
 Prentex Alloy Fabricators, Incorporated | Dallas | TX | — | ◇ UNVERIFIED |
| PDProtech Design | Anaheim | CA | — | ◇ UNVERIFIED |
| PSPte Systems International LLC | Hialeah | FL | — | ◇ UNVERIFIED |
| QQQuick Quack Car Wash Coe | Roseville | CA | — | ◇ UNVERIFIED |
| RFRebellion Fabrication LLC | Wahoo | NE | — | ◇ UNVERIFIED |
| RSRepublic Steel, Lackawanna | Blasdell | NY | — | ◇ UNVERIFIED |
| RSRouge Steel CO | Dearborn | MI | — | ◇ UNVERIFIED |
| RPR P M Centerless Grinding CO | Norco | CA | — | ◇ UNVERIFIED |
| RTRr Traders & Import Export LLC | Lewis Center | OH | — | ◇ UNVERIFIED |
| RIRusselloy Iron Foundry, LLC | Coralville | IA | — | ◇ UNVERIFIED |
| SWSandvik Wire and Heating Technologies | Bethel | CT | — | ◇ UNVERIFIED |
 Schlosser Forge Company Rancho Plant #2 | Fontana | CA | — | ◇ UNVERIFIED |
| SISearing Ind | Rancho Cucamonga | CA | — | ◇ UNVERIFIED |
| SFSefi Fabricators; IMC Teddy; Bayone Stainless Products | Amityville | NY | — | ◇ UNVERIFIED |
| SPShawcor Pipe Protection LLC. | Fontana | CA | — | ◇ UNVERIFIED |
| SSSheffield Steel Products INC | Macedonia | OH | — | ◇ UNVERIFIED |
| SMShieldalloy Metallurgical | Newfield | NJ | — | ◇ UNVERIFIED |
| SRShipping Rail Red Line | Blytheville | AR | — | ◇ UNVERIFIED |
| SDSigma DG Corporation Inc. | Vancouver | WA | — | ◇ UNVERIFIED |
| SMSiri Manufacturing Company, INC. | Danielson | CT | — | ◇ UNVERIFIED |
 Skyline Steel CORP | Brooklyn | NY | — | ◇ UNVERIFIED |
| SSSmi Steel Arkansas (dba Cmc Steel Ar) | Magnolia | AR | — | ◇ UNVERIFIED |
| SMSms Mill Services LLC Contractor of Ace | Burns Harbor | IN | — | ◇ UNVERIFIED |
| SMSnl-iov Montclair Owner LLC | Montclair | CA | — | ◇ UNVERIFIED |
| SISolsil Incorporated (0684000225) | Beverly | OH | — | ◇ UNVERIFIED |
| SPSouthern Perfection Fabrication Holdings, INC. | Byron | GA | — | ◇ UNVERIFIED |
| SSSouthern Star Steel Services LLC | Lorena | TX | — | ◇ UNVERIFIED |
| SSSouthern Steel Fabricators | Metairie | LA | — | ◇ UNVERIFIED |
| SSSouthern Steel - Wire Incorporated | Madison | NC | — | ◇ UNVERIFIED |
| SCSouthwestern Creations LLC | South West City | MO | — | ◇ UNVERIFIED |
| SMSpg Mechanical | Pocatello | ID | — | ◇ UNVERIFIED |
| SSS & S Custom Iron Works Llc | Redmond | WA | — | ◇ UNVERIFIED |
| SSStainless Steel Tanks, INC. | Saint Mary | MO | — | ◇ UNVERIFIED |
| SSState Steel of South Dakota, INC. | Sioux Falls | SD | — | ◇ UNVERIFIED |
| SSStation Steel Services, Inc | Milford | PA | — | ◇ UNVERIFIED |
| SDSteel Dynamics, INC. | Lake City | FL | — | ◇ UNVERIFIED |
| SDSteel Dynamics, INC. (sdi), Structural | Columbia City | IN | — | ◇ UNVERIFIED |
| SDSteel Dynamics, INC. - Swva, INC. | Huntington | WV | — | ◇ UNVERIFIED |
| SRSteel Resources Unlimited, INC. | Miramar | FL | — | ◇ UNVERIFIED |
| SRSteel Resources Unlimited, INC. | Miami | FL | — | ◇ UNVERIFIED |
| STSteel Technology & Design, INC. | Lakeland | FL | — | ◇ UNVERIFIED |
 Stephens Pipe & Steel LLC. Dba Stephens Pipe & Ste | Russell Springs | KY | — | ◇ UNVERIFIED |
| SSSterling Steel CO LLC | Sterling | IL | — | ◇ UNVERIFIED |
| SSSterling Steel Fabrications INC | West Palm Beach | FL | — | ◇ UNVERIFIED |
| SPSuncoast Projects, LLC | Groveland | FL | — | ◇ UNVERIFIED |
| SGSuncoke Gpi LLC | Granite City | IL | — | ◇ UNVERIFIED |
| SSSuperior Steel, INC. | Rochester | NY | — | ◇ UNVERIFIED |
