| OFONG Flowline Products, LLC | Sulphur | OK | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| OSOps Sales Company | Dewey | OK | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| OPOptions Plus, INC. | Fredericktown | OH | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| PSPaley Studios LTD. | Rochester | NY | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| PGParamount Glassworks, LLC | Woodstock | CT | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| PSParking Safe Plus LLC | Chester | NY | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| PSParking Safe Plus LLC | Chester | NY | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| PMPatriot Metal Products INC. | Berwick | PA | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| PLPax, LLC | Gonzales | LA | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| PSPciw Steel CORP | San Diego | CA | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| PSP&C Steel Services LLC | Sanford | FL | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| PPPdt - Prysmian Group | Bridgewater | NJ | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| PIPenn-mar, INC. | Sarasota | FL | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| PCPerformance Contractors Rosharon Facility | Rosharon | TX | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| PMPhillips Mfg.& Tower CO Dba Shelby Welded Tube | Shelby | OH | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| PIPillamere Industries Corporation | Alpharetta | GA | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| PPPittsburgh Pipe & Supply Corporation | Saint Louis | MO | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| PSPlymouth Specialty Manufacturing, LLC | Versailles | KY | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| PPPoorhouse Properties, LLC | Tangent | OR | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| PWPrecision Welding LLC | Wellington | CO | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| PSPrecison Steel Services, INC. | Farrell | PA | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| PTProduction Technologies INC | Preston | ID | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| PHPtc Holdings Group | Alliance | OH | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| QMQDC Manufacturing | Brighton | MI | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| QTQuadrant Tool and Manufacturing Company | Schaumburg | IL | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| QRQuail Ridge Construction Company | Red House | WV | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| QEQuality Engineered Steels LLC | Point Pleasant | WV | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| QIQuality Ironworks | Dallas | TX | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| RCRail Components, Inc. | Muskegon | MI | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| RORamcast Ornamental Supply CO INC | Fresno | CA | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| RIRam Industrial INC. | Dawson | GA | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| RMRAM Machining, Inc. | Washington Courth House | OH | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| RSReliance Steel of Vermont, INC | Colchester | VT | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| RSRey's Stainless Steel & More | Pharr | TX | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| RMRilco Manufacturing Co., Inc. | Houston | TX | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| RIRitch, INC. | Vincent | AL | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| RSRoberts Steel, LLC | McCalla | AL | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| RMRocky Mountain Rebar | Delta | CO | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| RTR&R Tool, Inc. | Holland | MI | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| RWRt Welding | Hesperia | CA | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| RLRtz, LLC | Winchester | VA | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| RSRush Steel Supply Incorporated | El Centro | CA | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| SCSanta Clara Windustrial | Fremont | CA | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| SPSchnitzer Puerto Rico, INC. | Salinas | PR | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| SXSchulz Xtruded Products | Robinsonville | MS | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| SNSerimax North America | Theodore | AL | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| SSService Steel Framing, Inc. | Auburn | IN | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| SMSG Metals, LLC (JJKF Properties, LLC | Sea Girt | NJ | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| SMShardy Machine Services LLC | Burghill | OH | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
| SNShaw Naptech | Clearfield | UT | Primary Metal Manufacturing331210 | — | ◇ UNVERIFIED |
