| OVOhio Valley Stamping-assemblies INC. | Mansfield | OH | — | ◇ UNVERIFIED |
| OSOne Stop Steel | Saint Louis | MO | — | ◇ UNVERIFIED |
| OFONG Flowline Products, LLC | Sulphur | OK | — | ◇ UNVERIFIED |
| OSOps Sales Company | Dewey | OK | — | ◇ UNVERIFIED |
| OPOptions Plus, INC. | Fredericktown | OH | — | ◇ UNVERIFIED |
| PTPacific Tube CO | Los Angeles | CA | — | ◇ UNVERIFIED |
| PSPaley Studios LTD. | Rochester | NY | — | ◇ UNVERIFIED |
| PIParagon Industries INC / Paragon Industries INC | Sapulpa | OK | — | ◇ UNVERIFIED |
| PGParamount Glassworks, LLC | Woodstock | CT | — | ◇ UNVERIFIED |
| PSParking Safe Plus LLC | Chester | NY | — | ◇ UNVERIFIED |
| PSParking Safe Plus LLC | Chester | NY | — | ◇ UNVERIFIED |
| PMPatriot Metal Products INC. | Berwick | PA | — | ◇ UNVERIFIED |
| PLPax, LLC | Gonzales | LA | — | ◇ UNVERIFIED |
| PCP C Campana | Canton | OH | — | ◇ UNVERIFIED |
| PSPciw Steel CORP | San Diego | CA | — | ◇ UNVERIFIED |
| PSP&C Steel Services LLC | Sanford | FL | — | ◇ UNVERIFIED |
| PPPdt - Prysmian Group | Bridgewater | NJ | — | ◇ UNVERIFIED |
| PIPenn-mar, INC. | Sarasota | FL | — | ◇ UNVERIFIED |
| PCPerformance Contractors Rosharon Facility | Rosharon | TX | — | ◇ UNVERIFIED |
| PEPetrosmith Equipment Abilene Facility | Abilene | TX | — | ◇ UNVERIFIED |
| PMPhillips Mfg.& Tower CO Dba Shelby Welded Tube | Shelby | OH | — | ◇ UNVERIFIED |
| PTPhillips Tube Group | Shelby | OH | — | ◇ UNVERIFIED |
| PIPillamere Industries Corporation | Alpharetta | GA | — | ◇ UNVERIFIED |
| PPPittsburgh Pipe & Supply Corporation | Saint Louis | MO | — | ◇ UNVERIFIED |
| PSPlymouth Specialty Manufacturing, LLC | Versailles | KY | — | ◇ UNVERIFIED |
| PTPlymouth Tube CO | Streator | IL | — | ◇ UNVERIFIED |
| PPPoorhouse Properties, LLC | Tangent | OR | — | ◇ UNVERIFIED |
| PWPrecision Welding LLC | Wellington | CO | — | ◇ UNVERIFIED |
| PSPrecison Steel Services, INC. | Farrell | PA | — | ◇ UNVERIFIED |
| PTProduction Technologies INC | Preston | ID | — | ◇ UNVERIFIED |
| PCPrysmian Cables and Systems USA. LLC | Bridgewater Twp | NJ | — | ◇ UNVERIFIED |
| PHPtc Holdings Group | Alliance | OH | — | ◇ UNVERIFIED |
| PSPtc Seamless Tube CORP | Hopkinsville | KY | — | ◇ UNVERIFIED |
| QMQDC Manufacturing | Brighton | MI | — | ◇ UNVERIFIED |
| QTQuadrant Tool and Manufacturing Company | Schaumburg | IL | — | ◇ UNVERIFIED |
| QRQuail Ridge Construction Company | Red House | WV | — | ◇ UNVERIFIED |
| QEQuality Engineered Steels LLC | Point Pleasant | WV | — | ◇ UNVERIFIED |
| QIQuality Ironworks | Dallas | TX | — | ◇ UNVERIFIED |
| RCRail Components, Inc. | Muskegon | MI | — | ◇ UNVERIFIED |
| RORamcast Ornamental Supply CO INC | Fresno | CA | — | ◇ UNVERIFIED |
| RIRam Industrial INC. | Dawson | GA | — | ◇ UNVERIFIED |
| RMRAM Machining, Inc. | Washington Courth House | OH | — | ◇ UNVERIFIED |
| RDRays Dies and Tubing | Swanton | VT | — | ◇ UNVERIFIED |
| RSReliance Steel of Vermont, INC | Colchester | VT | — | ◇ UNVERIFIED |
| RIRemedy Intelligent Staffing, LLC | Panama City Beach | FL | — | ◇ UNVERIFIED |
| RSRey's Stainless Steel & More | Pharr | TX | — | ◇ UNVERIFIED |
| RMRilco Manufacturing Co., Inc. | Houston | TX | — | ◇ UNVERIFIED |
| RIRitch, INC. | Vincent | AL | — | ◇ UNVERIFIED |
| RSRiver Steel INC | La Crosse | WI | — | ◇ UNVERIFIED |
| RSRoberts Steel, LLC | McCalla | AL | — | ◇ UNVERIFIED |