| OMOmco Midwest Roll Forming | Pierceton | IN | — | ◇ UNVERIFIED |
| OPOmni Products, INC. | Lincolnton | NC | — | ◇ UNVERIFIED |
| OMO'neal Manufacturing Services | Ambridge | PA | — | ◇ UNVERIFIED |
| OSOps Sales Company | Birmingham | AL | — | ◇ UNVERIFIED |
| OUOpta USA Inc/affival INC | New Kensington | PA | — | ◇ UNVERIFIED |
| OSOregon Steel Mills-fontana Div | Fontana | CA | — | ◇ UNVERIFIED |
| OROttawa River Steel | Detroit | MI | — | ◇ UNVERIFIED |
| OSOutokumpu Stainless | Richburg | SC | — | ◇ UNVERIFIED |
| OSOutokumpu Stainless USA LLC | Haverhill | MA | — | ◇ UNVERIFIED |
| OSOwens Steel Fabricators, INC. | Dallas | GA | — | ◇ UNVERIFIED |
| PSPacific Steel Group | Bloomington | CA | — | ◇ UNVERIFIED |
| PGPanther Global Technologies | Wixom | MI | — | ◇ UNVERIFIED |
| PMPanther Machine INC | Wixom | MI | — | ◇ UNVERIFIED |
| PCParamit Corporation | Morgan Hill | CA | — | ◇ UNVERIFIED |
| PMParamount Metals & Supply CO | Paramount | CA | — | ◇ UNVERIFIED |
| PTPatterson Tubular Services | Liberty | TX | — | ◇ UNVERIFIED |
| PIPaughco, INC | Mound House | NV | — | ◇ UNVERIFIED |
| PSPennsylvania Sintered Metals INC | Emporium | PA | — | ◇ UNVERIFIED |
| PFPenny Fabrication | Johnstown | OH | — | ◇ UNVERIFIED |
| PUPetmin USA Incorporated (0204012023) | Ashtabula | OH | — | ◇ UNVERIFIED |
| POPhlebotomists on Wheels | Pompano Beach | FL | — | ◇ UNVERIFIED |
| PSPhoenix Services LLC Georgetown | Georgetown | SC | — | ◇ UNVERIFIED |
| PSPhoenix Services LLC Pig Iron Caster | Gary | IN | — | ◇ UNVERIFIED |
| PSPhoenix Svc LLC - Johnstown Slag Prep Facility | Johnstown | PA | — | ◇ UNVERIFIED |
| PFPittsburgh Flatroll Company | Pittsburgh | PA | — | ◇ UNVERIFIED |
| PSPkm Steel Service - Salina (s Ave C) | Salina | KS | — | ◇ UNVERIFIED |
| PSPowers Solar Frames, LLC | Phoenix | AZ | — | ◇ UNVERIFIED |
| PSPowers Steel & Wire Products INC | Phoenix | AZ | — | ◇ UNVERIFIED |
| PMPrecision Machine Shop Inc | Houston | TX | — | ◇ UNVERIFIED |
| PSPrecision Specialty Metals INC | Los Angeles | CA | — | ◇ UNVERIFIED |
| PTPrecision Tooling Technologies, LLC | Zeeland | MI | — | ◇ UNVERIFIED |
 Prentex Alloy Fabricators, Incorporated | Dallas | TX | — | ◇ UNVERIFIED |
| PRProfessional Refinishing Org | La Puente | CA | — | ◇ UNVERIFIED |
| PIProfiles INC | Palmer | MA | — | ◇ UNVERIFIED |
| PDProtech Design | Anaheim | CA | — | ◇ UNVERIFIED |
| PFPrototype Fabricators Co. | Cleveland | OH | — | ◇ UNVERIFIED |
| PMPyron Metal | Niagara Falls | NY | — | ◇ UNVERIFIED |
| QAQuailty Automotive | Westminster | CA | — | ◇ UNVERIFIED |
 Quality Aluminum Forge INC | Long Beach | CA | — | ◇ UNVERIFIED |
| QEQuality Engineered Steels, LLC Dba Wv Cold Drawn | Point Pleasant | WV | — | ◇ UNVERIFIED |
 Quality Metal Works | Plant City | FL | — | ◇ UNVERIFIED |
| QQQuick Quack Car Wash Coe | Roseville | CA | — | ◇ UNVERIFIED |
| RGRaiden Group Site Development | Atwood | KS | — | ◇ UNVERIFIED |
| RFRebellion Fabrication LLC | Wahoo | NE | — | ◇ UNVERIFIED |
| RSRecticon/allied Steel CORP. | Parker Ford | PA | — | ◇ UNVERIFIED |
| RSRegional Steel CORP | Fontana | CA | — | ◇ UNVERIFIED |
| RTReliable Temps, INC. | Palmer | MA | — | ◇ UNVERIFIED |
| RWReliable Welding, INC. | Tampa | FL | — | ◇ UNVERIFIED |
| RERepublic Engineered Products, LLC - Gary Dunes Plant | Gary | IN | — | ◇ UNVERIFIED |
| RERepublic Engineered Steel, INC | Naperville | IL | — | ◇ UNVERIFIED |
