| NINewport Industrial Fabrication | Newport | ME | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| NVNucor Vulcraft Group Saint Joe Div | Saint Joe | IN | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
| OSOwen Steel CO | Columbia | SC | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
| PMPalmer Mfg & Tank - Bismarck | Bismarck | ND | Fabricated Metal Product Manufacturing332312 | 1-19 | ◐ LIKELY ACTIVE |
| PSPalmer Steel Supplies | Mcallen | TX | Fabricated Metal Product Manufacturing332311 | 100-499 | ◐ LIKELY ACTIVE |
| PIPanagraphics INC | Dover | PA | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| PIParlec INC | Fairport | NY | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| PFPemberton Fabricators INC | Rancocas | NJ | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| PSPhat Steel INC. | Bernalillo | NM | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| PMPiedmont Metal Products INC | Bedford | VA | Fabricated Metal Product Manufacturing332312 | 1-19 | ◐ LIKELY ACTIVE |
| PEPillar Enterprise LTD | White Post | VA | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
P & R Metals INC | Birmingham | AL | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
| PMProvidential Metals | Ashville | AL | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| PFPwc Fabrication | Fort Wayne | IN | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| PIPwi Incorporated | Nappanee | IN | Fabricated Metal Product Manufacturing332312 | 100-499 | ◐ LIKELY ACTIVE |
| QFQuality Fab INC | Ariton | AL | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| QMQuality Machine CO INC | Bridgeport | WV | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| QMQuality Machine & Welding Company, INC. | Knoxville | TN | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
Quality Welding & Fabrication LLC | Elida | OH | Fabricated Metal Product Manufacturing332311 | 20-99 | ◐ LIKELY ACTIVE |
| QMQuincy Metal Fabricators | Quincy | IL | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| RARebar Az Glendale | Glendale | AZ | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| RIRegal Industrial Corporation | Donora | PA | Fabricated Metal Product Manufacturing332312 | 100-499 | ◐ LIKELY ACTIVE |
| RSReynolds Services INC | Greenville | PA | Primary Metal Manufacturing331221 | 100-499 | ◐ LIKELY ACTIVE |
Riggins Company, L.c. | Hampton | VA | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
| RMRivers Metal Products INC | Lincoln | NE | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
Sabre Communications CORP | Sioux City | IA | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
| SISabre Industries | Fort Worth | TX | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| SFSapulpa Faclty | Sapulpa | OK | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
| SSSchenectady Steel CO INC | Schenectady | NY | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
Schuff Steel | Lindon | UT | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
Schuff Steel Midwest | Ottawa | KS | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
| SSSeah Steel USA | Houston | TX | Primary Metal Manufacturing331210 | 20-99 | ◐ LIKELY ACTIVE |
| SMService Machine | Dothan | AL | Fabricated Metal Product Manufacturing332312 | 1-19 | ◐ LIKELY ACTIVE |
| SOSfi of Tennessee | Memphis | TN | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
| SLShaw Lake Charles LLC | Lake Charles | LA | Fabricated Metal Product Manufacturing332312 | 100-499 | ◐ LIKELY ACTIVE |
| SISinco, INC. | Conway | AR | Fabricated Metal Product Manufacturing332312 | 100-499 | ◐ LIKELY ACTIVE |
| SCSippel CO INC Dba Sippel Steel Fab | Ambridge | PA | Fabricated Metal Product Manufacturing332312 | 100-499 | ◐ LIKELY ACTIVE |
| SJSmi Joist:cayce | Cayce | SC | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
| SCSoutheastern Construction & Maintenance | Mulberry | FL | Fabricated Metal Product Manufacturing332312 | 100-499 | ◐ LIKELY ACTIVE |
| SOSouthern Ohio Fabricators | Batavia | OH | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
| SCStandard Coating INC. | Madison Hts | MI | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
| SIStandard Iron Works | Scranton | PA | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| SBSteel Boss International | Dallas | TX | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| SCSteel City, INC | Panama City | FL | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
Steelfab INC of Alabama | Roanoke | AL | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
Steel Structures, INC. | Madera | CA | Fabricated Metal Product Manufacturing332312 | — | ◐ LIKELY ACTIVE |
| SWSteel West Incorporated | Pocatello | ID | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| SESterling Engineering & Fabrication | Carrollton | GA | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |
| SMSummertown Metals LLC | Summertown | TN | Fabricated Metal Product Manufacturing332312 | 100-499 | ◐ LIKELY ACTIVE |
| SMSunbelt Metals & Manufacturing | Apopka | FL | Fabricated Metal Product Manufacturing332312 | 20-99 | ◐ LIKELY ACTIVE |