| SPStauffer Pipe Services | Houston | TX | — | ◇ UNVERIFIED |
| STS Taylor Heirs 14 #3 Tank Battery - Haynesville Field | Haynesville | LA | — | ◇ UNVERIFIED |
| SCSt. Cloud Engraving | Saint Cloud | MN | — | ◇ UNVERIFIED |
| SCSteel City CORP | Youngstown | OH | — | ◇ UNVERIFIED |
 Steele Solutions INC | South Milwaukee | WI | — | ◇ UNVERIFIED |
| SFSteel Fab Enterprises Ss Fisher Landfill | Lancaster | PA | — | ◇ UNVERIFIED |
 Steelfab, INC. | York | SC | — | ◇ UNVERIFIED |
| Steelfab, INC. - Texas Division | Durant | OK | — | ◇ UNVERIFIED |
| SOSteelfab of Fayetteville | Fayetteville | NC | — | ◇ UNVERIFIED |
| SOSteelfab Oregon, INC. | Spokane | WA | — | ◇ UNVERIFIED |
| SFSteel Fabricators INC. | Lincoln | NE | — | ◇ UNVERIFIED |
| SFSteel Fabricators, INC. | Fort Collins | CO | — | ◇ UNVERIFIED |
| SFSteel Fabricators L.l.c. | Fort Lauderdale | FL | — | ◇ UNVERIFIED |
| Steelfab West, INC. | Tangent | OR | — | ◇ UNVERIFIED |
| SHSteel Heddle Reeds LLC | Greenville | SC | — | ◇ UNVERIFIED |
| SPSteel Painters INC | Kelso | WA | — | ◇ UNVERIFIED |
| SPSteel Painters INC Columbia Way | Vancouver | WA | — | ◇ UNVERIFIED |
| SPSteel Pipe Fabricators, LLC | Norcross | GA | — | ◇ UNVERIFIED |
| SPSteel Products Company | Leicester | MA | — | ◇ UNVERIFIED |
| SSteelscape | Richmond | CA | — | ◇ UNVERIFIED |
| SSteelscape | Fairfield | AL | — | ◇ UNVERIFIED |
| SFSteelscape Fairfield | Fairfield | AL | — | ◇ UNVERIFIED |
| SSSteel Storage Systems, INC | Commerce City | CO | — | ◇ UNVERIFIED |
| STSteel Technologies CORP | Jersey City | NJ | — | ◇ UNVERIFIED |
| SPSteeltec Products | Cleveland | OH | — | ◇ UNVERIFIED |
| SVSteel Ventures INC | Wurtland | KY | — | ◇ UNVERIFIED |
| SWSteel Warehouse of Ohio | Warren | OH | — | ◇ UNVERIFIED |
| SMStellar Manufacturing, INC. | Hazelwood | MO | — | ◇ UNVERIFIED |
| SJStephanie Joos | Champaign | IL | — | ◇ UNVERIFIED |
| SMStephens Metal Products | Yakima | WA | — | ◇ UNVERIFIED |
| SCStephenson County Choppers | Freeport | IL | — | ◇ UNVERIFIED |
 Stephens Pipe & Steel LLC Decatur Facility | Russell Springs | KY | — | ◇ UNVERIFIED |
| SCSteris CORP | Chester | NY | — | ◇ UNVERIFIED |
| SDSteris Distribution Center | Mentor | OH | — | ◇ UNVERIFIED |
| SCSterling Custom Sheet Metal | Magnolia | TX | — | ◇ UNVERIFIED |
| SESterling Engines | Rockford | IL | — | ◇ UNVERIFIED |
| SPSterno Products | Memphis | TN | — | ◇ UNVERIFIED |
| SPSteven Piper & Sons | Naperville | IL | — | ◇ UNVERIFIED |
| SRSteve Reiff Incorporated | South Whitley | IN | — | ◇ UNVERIFIED |
| SIStevers INC | Peoria | IL | — | ◇ UNVERIFIED |
| SWSteve's Woodworking INC Dba Swi Interior | Osage Township | MN | — | ◇ UNVERIFIED |
| SMSteward Machine CO. | Bainbridge | GA | — | ◇ UNVERIFIED |
| SMStg/industrialex Manufacturing | Colorado Springs | CO | — | ◇ UNVERIFIED |
| SFStillwater Fasteners | Freetown, Town of | MA | — | ◇ UNVERIFIED |
| SSStiman Steel | Augusta | ME | — | ◇ UNVERIFIED |
| SJSt. Jean Industries | Heber Springs | AR | — | ◇ UNVERIFIED |
| SJSt Jude Medical | Caguas | PR | — | ◇ UNVERIFIED |
| SJSt. Jude Medical | Saint Paul | MN | — | ◇ UNVERIFIED |
| SJSt Jude Medical Puerto Rico LLC | Arecibo | PR | — | ◇ UNVERIFIED |
| SLSt. Louis Metallizing Company | Saint Louis | MO | — | ◇ UNVERIFIED |
| SLSt Louis National Stockyards | East Saint Louis | IL | — | ◇ UNVERIFIED |
| SLSt Louis Regional Airport | East Alton | IL | — | ◇ UNVERIFIED |
| SLSt Louis Screw & Bolt | Madison | IL | — | ◇ UNVERIFIED |
| SEStock Equipment CO | Chagrin Falls | OH | — | ◇ UNVERIFIED |
| SIStoll Industries, INC. | Abbeville | SC | — | ◇ UNVERIFIED |
| SBStonehouse Building Products LLC | Florence | KY | — | ◇ UNVERIFIED |
| SPStone Products of St Cloud INC | Sauk Rapids | MN | — | ◇ UNVERIFIED |
| SStoneycreek | Blairstown | IA | — | ◇ UNVERIFIED |
| SCStoody Company / Stoody Deloro Stellite INC | City of Industry | CA | — | ◇ UNVERIFIED |
| SOStorage of America | Rock Island | IL | — | ◇ UNVERIFIED |
| SKStore Kraft Manufacturing | Beatrice | NE | — | ◇ UNVERIFIED |
| SStorflex | Corning | NY | — | ◇ UNVERIFIED |
| SPStp Products Manufacturing | Garland | TX | — | ◇ UNVERIFIED |
| SPStp Products Manufacturing Company | Vandalia | OH | — | ◇ UNVERIFIED |
| SPStrahl & Pitsch INC | West Babylon | NY | — | ◇ UNVERIFIED |
| SMStrategic Materials INC | Chicago | IL | — | ◇ UNVERIFIED |
| SDStreator Dependable Mfg INC | Streator | IL | — | ◇ UNVERIFIED |
| SCStrick Corporation | Abbeville | SC | — | ◇ UNVERIFIED |
| SAStrickland Agriculture Services Incorporated | Spring Hope | NC | — | ◇ UNVERIFIED |
| SOStripmasters of Illinois | Granite City | IL | — | ◇ UNVERIFIED |
| SCStrombecker CORP | Chicago | IL | — | ◇ UNVERIFIED |
| SSStruc Steel INC | Spring Valley | CA | — | ◇ UNVERIFIED |
| SCStructural Composites Ind | Pomona | CA | — | ◇ UNVERIFIED |
| SCStructural Concepts Corporation | Muskegon | MI | — | ◇ UNVERIFIED |
| SSStructural Standards INC | Sparta | MI | — | ◇ UNVERIFIED |
| SSStructural Steel of Carolina | Hickory | NC | — | ◇ UNVERIFIED |
| SSStructural Steel Services INC Plant 2 | Meridian | MS | — | ◇ UNVERIFIED |
| SSStructural Steel Services Inc, Plant 3 | Meridian | MS | — | ◇ UNVERIFIED |
| SSStructural Steel Services, Plant 1 | Meridian | MS | — | ◇ UNVERIFIED |
| SCStruktol CO. of America | Villa Rica | GA | — | ◇ UNVERIFIED |
| SCStryker Corporation | Portage | MI | — | ◇ UNVERIFIED |
| SIStryker Instruments | Portage | MI | — | ◇ UNVERIFIED |
| SSSts Steel INC | Schenectady | NY | — | ◇ UNVERIFIED |
| SGStuart Gessner | Streator | IL | — | ◇ UNVERIFIED |
| SCStuder Container Service | Tonganoxie | KS | — | ◇ UNVERIFIED |
| SWStud Welding, INC. | Centerville | TN | — | ◇ UNVERIFIED |
| SCStupp Coatings LLC | Baton Rouge | LA | — | ◇ UNVERIFIED |
| SLSturdy Lantern Manufacturing | Franklin | MA | — | ◇ UNVERIFIED |
| SCStutz CO | Chicago | IL | — | ◇ UNVERIFIED |
| SVSt Vincent De Paul Building CORP Hall-conklin | Conklin | MI | — | ◇ UNVERIFIED |
| SCStylecraft Corp/route 625 | East Earl | PA | — | ◇ UNVERIFIED |
| SCStyle Crest Products | Plant City | FL | — | ◇ UNVERIFIED |
| SDSuburban Dry Clnr/lewistown | Lewistown | PA | — | ◇ UNVERIFIED |
| SPSuburban Plastics CO | Elgin | IL | — | ◇ UNVERIFIED |
| SSSuburban Steel Supply Company LLC | Gahanna | OH | — | ◇ UNVERIFIED |
| SSSudden Services, Remanufacturing Center | Carthage | MS | — | ◇ UNVERIFIED |
| SPSullivan Palatek | Michigan City | IN | — | ◇ UNVERIFIED |
| SPSulzer Pumps | Portland | OR | — | ◇ UNVERIFIED |
| SPSulzer Pump Services (us) INC. | Mobile | AL | — | ◇ UNVERIFIED |
| STSulzer Turbo Services Houston INC | La Porte | TX | — | ◇ UNVERIFIED |
