| PHPrecision Heat Treating | Montebello | CA | — | ◇ UNVERIFIED |
| PLPrecision Laser Mfg | Lawrenceburg | TN | — | ◇ UNVERIFIED |
| PPPrecision Pulley & Idler - Lenox | Lenox | IA | — | ◇ UNVERIFIED |
| PCPreferred Cremations LLC | Big Bend | WI | — | ◇ UNVERIFIED |
| PCPremier Construction Systems INC | Bethel | MN | — | ◇ UNVERIFIED |
| PFPremier Fabricators, LLC | Fort Pierce | FL | — | ◇ UNVERIFIED |
| PPPremier Plant Services INC | Sapulpa | OK | — | ◇ UNVERIFIED |
| PVPremier Valve Group | Broken Arrow | OK | — | ◇ UNVERIFIED |
| PCPrescient Co., INC. | Arvada | CO | — | ◇ UNVERIFIED |
| PCPrescient Co., INC. | Denver | CO | — | ◇ UNVERIFIED |
| PCPrescient Company, INC. - Mebane Facility ** Inactive ** | Mebane | NC | — | ◇ UNVERIFIED |
| PMPrescott Metal | Biddeford | ME | — | ◇ UNVERIFIED |
| PLPressurelinks, L.p. | Spring | TX | — | ◇ UNVERIFIED |
| PCPrieto Construction CO INC. | North Hollywood | CA | — | ◇ UNVERIFIED |
| PMPrime Metal CORP. | Longwood | FL | — | ◇ UNVERIFIED |
| PRPrivate Residence of Thomas a Barnes | Marion | IA | — | ◇ UNVERIFIED |
| PDProcess Development and Fabrication INC | Lawrenceburg | KY | — | ◇ UNVERIFIED |
| PEProcess Equipment, INC. Dba Process Barron | Pelham | AL | — | ◇ UNVERIFIED |
| PEProcess Equipment & Service Company (pesco) | Farmington | NM | — | ◇ UNVERIFIED |
| PPProcess Pumps & Equipment INC - Geismar Warehouse | Geismar | LA | — | ◇ UNVERIFIED |
| PSProck Solutions, INC | Granbury | TX | — | ◇ UNVERIFIED |
| PCProduction Cutting Services INC. | Waterman | IL | — | ◇ UNVERIFIED |
| PPProduction Products of Louisiana, LLC | Sulphur | LA | — | ◇ UNVERIFIED |
| PSProduction Sawing, Inc. | Tigard | OR | — | ◇ UNVERIFIED |
| PWProduction Welding - Fabrication Co., INC. | Arden | NC | — | ◇ UNVERIFIED |
| PFProductivity Fabricators, INC. | Richmond | IN | — | ◇ UNVERIFIED |
| PSProduct Service & Manufacturing Corporation, INC. | West Allis | WI | — | ◇ UNVERIFIED |
| PCProfab Construction | Aransas Pass | TX | — | ◇ UNVERIFIED |
| PMProfessional Metal Works INC | Haslett | MI | — | ◇ UNVERIFIED |
| PSPro-flashing & Sheet Metal Les | West Monroe | LA | — | ◇ UNVERIFIED |
| PSProgressive Sheet Metal | Seward | NE | — | ◇ UNVERIFIED |
| PRProgress Rail Services CORP | Louisville | KY | — | ◇ UNVERIFIED |
| PSPro Steel Fab & Consulting LLC | Powell Butte | OR | — | ◇ UNVERIFIED |
| PSPro Structural INC. | Fullerton | CA | — | ◇ UNVERIFIED |
| PSProtec Steel INC | Richmond | VA | — | ◇ UNVERIFIED |
| PMPrototek Manufacturing | Hopkinton | NH | — | ◇ UNVERIFIED |
| PWPro Weld LLC | Chesterfield | MI | — | ◇ UNVERIFIED |
| PIPsb Industries INC | Erie | PA | — | ◇ UNVERIFIED |
| PIPsp Industries | Schertz | TX | — | ◇ UNVERIFIED |
| PMPtmw - Manhattan Facility | Manhattan | KS | — | ◇ UNVERIFIED |
| PMPuckett's Metal Works LLC | Brookfield | MA | — | ◇ UNVERIFIED |
| PBPulido Bros | Berthoud | CO | — | ◇ UNVERIFIED |
| PCPurdy CO | Burnham | IL | — | ◇ UNVERIFIED |
| PBPurple Bear Properties LLC | Colorado Springs | CO | — | ◇ UNVERIFIED |
| QPQsi Plant #2 | Dothan | AL | — | ◇ UNVERIFIED |
| QCQsr Corporation | Hartford | CT | — | ◇ UNVERIFIED |
| QMQualex Manufacturing LLC | Franklin | PA | — | ◇ UNVERIFIED |
 Quality Fab & Mechanical, LLC. | Saint Rose | LA | — | ◇ UNVERIFIED |
| QFQuality Fabrication & Assembly, LLC | Cuyahoga Falls | OH | — | ◇ UNVERIFIED |
| QIQuality Industrial Fabrication INC. | Houston | TX | — | ◇ UNVERIFIED |
| QIQuality Iron Fabricators, INC. | Memphis | TN | — | ◇ UNVERIFIED |
| QMQuality Machine & Welding CO INC. | Knoxville | TN | — | ◇ UNVERIFIED |
| QMQuality Machine & Welding CO INC. | Knoxville | TN | — | ◇ UNVERIFIED |
| QMQuality Metals | San Antonio | TX | — | ◇ UNVERIFIED |
| QOQuality One Steel Design | Shelbyville | KY | — | ◇ UNVERIFIED |
| QOQuality Outdoor Products | Leesville | LA | — | ◇ UNVERIFIED |
| QSQuality Steel, Inc | Sacramento | CA | — | ◇ UNVERIFIED |
| QTQuality T-tops & Boat Accessories INC | Tarpon Springs | FL | — | ◇ UNVERIFIED |
| QFQuicksteel Fab INC | Johnston | IA | — | ◇ UNVERIFIED |
| QLQuicktrophy LLC | Marquette | MI | — | ◇ UNVERIFIED |
| QJQuincy Joist Company | Buckeye | AZ | — | ◇ UNVERIFIED |
| QJQuincy Joist Company | Quincy | FL | — | ◇ UNVERIFIED |
| RTRack-it Truck Racks | Shingle Springs | CA | — | ◇ UNVERIFIED |
| RTRadius Track Corporation | Minneapolis | MN | — | ◇ UNVERIFIED |
| RARago and Sons, INC. | Oakland | CA | — | ◇ UNVERIFIED |
| RHRamark Holdings, L.l.c. | Dexter | IA | — | ◇ UNVERIFIED |
| RMRamon Metal Works | Sarasota | FL | — | ◇ UNVERIFIED |
| RSRam Steel | Copperas Cove | TX | — | ◇ UNVERIFIED |
| RSRam Steel | Odessa | TX | — | ◇ UNVERIFIED |
| RWRam Welding Company, INC. | Naugatuck | CT | — | ◇ UNVERIFIED |
| RWRatchen Welding and Fabrication LLC | Tiffin | OH | — | ◇ UNVERIFIED |
| RMRawlings Mechacnical CORP | Lancaster | CA | — | ◇ UNVERIFIED |
| RMRawlings Mechanical CORP. | Lancaster | CA | — | ◇ UNVERIFIED |
| RMRawlings Mechanical Corporation | Palmdale | CA | — | ◇ UNVERIFIED |
| RIRayes Inc, Dba Wheelchairs of Kansas | Hays | KS | — | ◇ UNVERIFIED |
| RSRay Streveler Shop, INC. | Edgar | WI | — | ◇ UNVERIFIED |
| RBR & B Reinforcing Steel CORP. | Chino | CA | — | ◇ UNVERIFIED |
| RFRcc Fabricators INC. | Southampton | NJ | — | ◇ UNVERIFIED |
| RFRc Fabricators INC | Hibbing | MN | — | ◇ UNVERIFIED |
| RIRch Industries Facilities | Houston | TX | — | ◇ UNVERIFIED |
| RMRc Manufacturing INC. | Logan | UT | — | ◇ UNVERIFIED |
| RFRCO Fabrication, LLC | Cushing | OK | — | ◇ UNVERIFIED |
| RCR Concepts Incorporated | Elkhart | IN | — | ◇ UNVERIFIED |
| RLRcr LLC | Portland | OR | — | ◇ UNVERIFIED |
| RCRcs Construction, LLC | Hillside | NJ | — | ◇ UNVERIFIED |
| RCR & C Welding Fab Trucking and Crane Service, INC. | Gering | NE | — | ◇ UNVERIFIED |
| RFRd Franklin Ave LLC | Franklin Park | IL | — | ◇ UNVERIFIED |
| RIRebarfab INC | Saint Paul | MN | — | ◇ UNVERIFIED |
| RSRebar Specialist INC. | Saint Louis | MO | — | ◇ UNVERIFIED |
| RFRebecca Fox Dba Rebecca Fox Studio | San Francisco | CA | — | ◇ UNVERIFIED |
| RSRebel Steel Ventures and Erect, INC. | Franklin | GA | — | ◇ UNVERIFIED |
| RTRedding Tank | Redding | CA | — | ◇ UNVERIFIED |
| RIRedd Iron, INC. | Boulder | CO | — | ◇ UNVERIFIED |
| RSRedi Services LLC - Metal Parts Coating | Platteville | CO | — | ◇ UNVERIFIED |
| RARedline Architectural Sheet Metal LLC | Saint Paul | MN | — | ◇ UNVERIFIED |
| RFReed Fabricators and Welding, INC. | Axis | AL | — | ◇ UNVERIFIED |
| RCRees Companies | Collegeville | PA | — | ◇ UNVERIFIED |
| RCRees Companies | Conshohocken | PA | — | ◇ UNVERIFIED |
| RSRegional Steel CORP | Fontana | CA | — | ◇ UNVERIFIED |
| RFReliable Fab and Manufacturing INC. | O Fallon | MO | — | ◇ UNVERIFIED |
