| SDSpot Design LLC | Ann Arbor | MI | — | ◇ UNVERIFIED |
| SSSprial Systems, INC. | Nesbit | MS | — | ◇ UNVERIFIED |
| SESpring Engineers of Dallas Dba Sei Metalforms | Dallas | TX | — | ◇ UNVERIFIED |
| SDSpx Dock Prods | Carrollton | TX | — | ◇ UNVERIFIED |
| SRS & R Architectural Metals INC | Anaheim | CA | — | ◇ UNVERIFIED |
| SLSrf LLC | Fredericksburg | VA | — | ◇ UNVERIFIED |
| SIS.R. Iron, Inc. | Windsor | CA | — | ◇ UNVERIFIED |
| SISr Iron INC | Healdsburg | CA | — | ◇ UNVERIFIED |
| SCSs Custom Fabrication, LLC | Redfield | AR | — | ◇ UNVERIFIED |
| SIS.s. Industries | Collegeville | PA | — | ◇ UNVERIFIED |
| SISs Industries Llc, Dba Salter Spiral Stair | Collegeville | PA | — | ◇ UNVERIFIED |
| SSS & S International, INC. | Carol Stream | IL | — | ◇ UNVERIFIED |
| SSS & S International, INC. of Illinois | Carol Stream | IL | — | ◇ UNVERIFIED |
| SSS & S Metal Fabricators | Chamois | MO | — | ◇ UNVERIFIED |
| SSS & S Midwest Fabricating, LLC | Morris | IL | — | ◇ UNVERIFIED |
| STS-square Tube Products, INC. | Commerce City | CO | — | ◇ UNVERIFIED |
| SLSt2 LLC | Placentia | CA | — | ◇ UNVERIFIED |
| SMStaco Manufacturing Dba Staco Decorative Iron | Hattiesburg | MS | — | ◇ UNVERIFIED |
| SCStaging Concepts INC | Minneapolis | MN | — | ◇ UNVERIFIED |
| SCStainless Cable & Railing, Inc | Washougal | WA | — | ◇ UNVERIFIED |
| SAStairs and Rails INC. | Melrose Park | IL | — | ◇ UNVERIFIED |
| SSStaley Steel | Frisco | TX | — | ◇ UNVERIFIED |
| SIStandard Iron, INC. | Chattanooga | TN | — | ◇ UNVERIFIED |
| SIStandard Iron - Wire Works INC | Sauk Centre | MN | — | ◇ UNVERIFIED |
 Standard Machine Company, LLC | Scarborough | ME | — | ◇ UNVERIFIED |
| SSStandard Sculpture LLC | Los Angeles | CA | — | ◇ UNVERIFIED |
| SSStandard Steel Fabricating CO INC | Seattle | WA | — | ◇ UNVERIFIED |
| SRStanek Rack CO INC | Detroit | MI | — | ◇ UNVERIFIED |
| SAStarlite Aluminum Products INC. | Tulsa | OK | — | ◇ UNVERIFIED |
| SOState of the Arc Welding LLC | Elba | NY | — | ◇ UNVERIFIED |
| SWState Welding & Fabricating, INC. | Wallingford | CT | — | ◇ UNVERIFIED |
| SISteelcad Industrial Services, INC. | Cutler | IL | — | ◇ UNVERIFIED |
| SCSteel City CORP | Youngstown | OH | — | ◇ UNVERIFIED |
| SCSteel City, INC. | Inlet Beach | FL | — | ◇ UNVERIFIED |
| SCSteel City Metal INC | Sterrett | AL | — | ◇ UNVERIFIED |
| SISteelco INC | Bloomington | CA | — | ◇ UNVERIFIED |
| SISteelco INC | Denver | CO | — | ◇ UNVERIFIED |
| SISteelco, INC. | Matthews | NC | — | ◇ UNVERIFIED |
| SISteelcon INC. | Brighton | CO | — | ◇ UNVERIFIED |
| SCSteel Construction Services | Napa | CA | — | ◇ UNVERIFIED |
| SUSteelCo U.S.A | Chino | CA | — | ◇ UNVERIFIED |
| SCSteel Creations LLC | Saint George | UT | — | ◇ UNVERIFIED |
| SDSteel Designs Iron Artwork LLC | Charlotte | NC | — | ◇ UNVERIFIED |
| SDSteel Dimensions | Erie | MI | — | ◇ UNVERIFIED |
| SESteel Erectors, INC. | Savannah | GA | — | ◇ UNVERIFIED |
| SESteel Erectors, INC. | Savannah | GA | — | ◇ UNVERIFIED |
 Steele Solutions INC | Franklin | WI | — | ◇ UNVERIFIED |
| Steele Solutions INC | Milwaukee | WI | — | ◇ UNVERIFIED |
 Steel Fab Enterprises Inc/pequea | Lancaster | PA | — | ◇ UNVERIFIED |
| SFSteel Fab INC | Jackson | TN | — | ◇ UNVERIFIED |
 Steelfab, INC. | Dublin | GA | — | ◇ UNVERIFIED |
| Steelfab, INC. | Charlotte | NC | — | ◇ UNVERIFIED |
| Steelfab, INC. | Rock Hill | SC | — | ◇ UNVERIFIED |
| Steelfab Inc., Alabama | Roanoke | AL | — | ◇ UNVERIFIED |
| SFSteel Fabricators, INC. | Fort Collins | CO | — | ◇ UNVERIFIED |
| SFSteel Fabricators L.l.c. | Fort Lauderdale | FL | — | ◇ UNVERIFIED |
| SFSteel Farmer LLC | Saint Francis | WI | — | ◇ UNVERIFIED |
| SGSteel Girder LLC | Coolidge | AZ | — | ◇ UNVERIFIED |
 Steelhead Metal & Fab LLC | Salem | OR | — | ◇ UNVERIFIED |
| Steelhead Metal Works | Newark | CA | — | ◇ UNVERIFIED |
| SKSteel King Industries, INC. | Aurora | IL | — | ◇ UNVERIFIED |
| SPSteel Painters INC | Kelso | WA | — | ◇ UNVERIFIED |
| SPSteel Partners, LLC | Las Vegas | NV | — | ◇ UNVERIFIED |
| SPSteel Partners, LLC | Las Vegas | NV | — | ◇ UNVERIFIED |
| SPSteel Partners, LLC | Henderson | NV | — | ◇ UNVERIFIED |
| SPSteel Products, INC | Sarasota | FL | — | ◇ UNVERIFIED |
| SMSteelrunner Metal Fabrication LLC | Beaverton | OR | — | ◇ UNVERIFIED |
| SSSteel Services, INC. | Norfolk | VA | — | ◇ UNVERIFIED |
| SSSteel Services Storage Building | Indianapolis | IN | — | ◇ UNVERIFIED |
 Steel Services Supplies | Toa Baja | PR | — | ◇ UNVERIFIED |
| SSSteel Specialties LLC | Point Pleasant | WV | — | ◇ UNVERIFIED |
| SSSteel Specialty Company of Belmont, INC. | Belmont | NC | — | ◇ UNVERIFIED |
| SSSteel Structures America, INC | Berthoud | CO | — | ◇ UNVERIFIED |
| SSSteel Structures of Ohio, LLC (1677010316) | Akron | OH | — | ◇ UNVERIFIED |
| STSteel Tech Division | Piscataway | NJ | — | ◇ UNVERIFIED |
| STSteel Tech Enterprises INC | Woodburn | OR | — | ◇ UNVERIFIED |
| SVSteel Ventures INC | Wurtland | KY | — | ◇ UNVERIFIED |
| SISteelway International, L.l.c. | Terrell | TX | — | ◇ UNVERIFIED |
| SISteelway International, LLC | Terrell | TX | — | ◇ UNVERIFIED |
| SISteelwind Industries, Inc | Oak Creek | WI | — | ◇ UNVERIFIED |
| SESteelworks Etc, INC | Oxnard | CA | — | ◇ UNVERIFIED |
| SFSteelworx Fabrication | Northridge | CA | — | ◇ UNVERIFIED |
| SSStephen Sera Studio | Richmond | CA | — | ◇ UNVERIFIED |
| SOStephens Ornamental Iron | Marietta | GA | — | ◇ UNVERIFIED |
 Stephens Pipe & Steel, LLC. | Winder | GA | — | ◇ UNVERIFIED |
| SASterling Atm INC | Salt Lake City | UT | — | ◇ UNVERIFIED |
| SDSterling Dula, a Division of Kane Innovations | Erie | PA | — | ◇ UNVERIFIED |
| SSSterling Steel Company | Portland | OR | — | ◇ UNVERIFIED |
| SBStetson Building Products, LLC. | Eldridge | IA | — | ◇ UNVERIFIED |
| SJSteve Johnson Companies | Wichita | KS | — | ◇ UNVERIFIED |
 Steward Machine CO. INC Plant 2 | Birmingham | AL | — | ◇ UNVERIFIED |
| SIStewart Industrial | Tell City | IN | — | ◇ UNVERIFIED |
| SIStewart Iron Works LLC | Erlanger | KY | — | ◇ UNVERIFIED |
| SFSt Fabrication | Orting | WA | — | ◇ UNVERIFIED |
| SIStiltz Iron, INC | Clarksville | TN | — | ◇ UNVERIFIED |
| SIStocklin Iron INC | Santa Rosa | CA | — | ◇ UNVERIFIED |
| SMStone Manufacturing Company | Gardena | CA | — | ◇ UNVERIFIED |
| SMStone Manufacturing Custom Handmade Fireplace Accessories LLC | Buffalo Grove | IL | — | ◇ UNVERIFIED |
| SRStones River Steel | Miboro | TN | — | ◇ UNVERIFIED |
| SSStratford Steel, LLC | Stratford | CT | — | ◇ UNVERIFIED |
