| 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 |
| SCSteffes Corporation-grand for | Grand Forks | ND | — | ◇ UNVERIFIED |
| SISteico Industries INC a Subsidiary at Senior Operation LLC | Oceanside | CA | — | ◇ UNVERIFIED |
| SIStellar Industries LLC | Bremen | IN | — | ◇ UNVERIFIED |
| SMStellar Machine, INC | Concord | CA | — | ◇ UNVERIFIED |
| STStellar Tent, Inc. | Humble | TX | — | ◇ UNVERIFIED |
| SSStephen Sera Studio | Richmond | CA | — | ◇ UNVERIFIED |
| SMStephens Metal Products | Yakima | WA | — | ◇ UNVERIFIED |
| SOStephens Ornamental Iron | Marietta | GA | — | ◇ UNVERIFIED |
| SPStephens Pipe and Steel, LLC | Montoursville | PA | — | ◇ UNVERIFIED |
 Stephens Pipe & Steel, LLC | Wyoming | MI | — | ◇ UNVERIFIED |
| Stephens Pipe & Steel, LLC. | Winder | GA | — | ◇ UNVERIFIED |
| SASterling Atm INC | Salt Lake City | UT | — | ◇ UNVERIFIED |
| SPSterling Plumbing Group INC | Los Angeles | CA | — | ◇ UNVERIFIED |
| STSterling Trophy INC | Anoka | MN | — | ◇ UNVERIFIED |
| SLSternschnuppe, LLC | Las Vegas | NV | — | ◇ UNVERIFIED |
| SBStetson Building Products, LLC. | Eldridge | IA | — | ◇ UNVERIFIED |
| SJSteve Johnson Companies | Wichita | KS | — | ◇ UNVERIFIED |
| SSStevens Sheetmetal & Ironworks, INC. | Pearl | MS | — | ◇ UNVERIFIED |
 Steward Machine CO. INC Plant 2 | Birmingham | AL | — | ◇ UNVERIFIED |
| SIStewart Industrial | Tell City | IN | — | ◇ UNVERIFIED |
| STStewart Tool Company, INC. | Rancho Cordova | CA | — | ◇ UNVERIFIED |
| SFSt Fabrication | Orting | WA | — | ◇ UNVERIFIED |
| STS T G Machine CORP | Santa Clara | CA | — | ◇ UNVERIFIED |
| SEStiles Enterprises, INC. | Rockaway | NJ | — | ◇ UNVERIFIED |
| SMStirrup Metal Products CORP | Newark | NJ | — | ◇ UNVERIFIED |
| SMSTMW Manufacturing LLC | Taylor | TX | — | ◇ UNVERIFIED |
| SRStockhouse Realty LLC | Bozrah | CT | — | ◇ UNVERIFIED |
| SMStoll Metalcraft INC | Valencia | CA | — | ◇ UNVERIFIED |
| SEStone Enterprises | Omaha | NE | — | ◇ UNVERIFIED |
| SRStones River Steel | Miboro | TN | — | ◇ UNVERIFIED |
| SVStone Valley Welding - Mcalevys Fort Mfg | Huntingdon | PA | — | ◇ UNVERIFIED |
| SPStorage Products Group | Aurora | CO | — | ◇ UNVERIFIED |
| SMStorch Magnetics | Livonia | MI | — | ◇ UNVERIFIED |
| SIStoutco, INC. | Bristol | IN | — | ◇ UNVERIFIED |
| SPSt. Paul Corrugating CO. | Minneapolis | MN | — | ◇ UNVERIFIED |
| SPSt. Paul's Manor | San Diego | CA | — | ◇ UNVERIFIED |
| SPStraightline Performance Products INC | Forest Lake | MN | — | ◇ UNVERIFIED |
| SIStraitline, INC. | Okarche | OK | — | ◇ UNVERIFIED |
| SMStrand Manufacturing Company INC | Hopkins | MN | — | ◇ UNVERIFIED |
| SSStratford Steel, LLC | Stratford | CT | — | ◇ UNVERIFIED |
 Streamline Tool & Engineering LLC | Grain Valley | MO | — | ◇ UNVERIFIED |
| SFStreet Factory Media | Bloomington | MN | — | ◇ UNVERIFIED |
| SIStreetscape INC | Huntington Beach | CA | — | ◇ UNVERIFIED |
| SRSt Regis Manufacturing LLC Trading /rs Owens | Itasca | IL | — | ◇ UNVERIFIED |
| SSStreimer Sheet Metal Works INC | Portland | OR | — | ◇ UNVERIFIED |
| SSStreimer Sheet Metal Works INC | Corvallis | OR | — | ◇ UNVERIFIED |
| SCStrick Corporation | Abbeville | SC | — | ◇ UNVERIFIED |
| SAStrickland Agriculture Services Incorporated | Spring Hope | NC | — | ◇ UNVERIFIED |
| SOStripmasters of Illinois | Granite City | IL | — | ◇ UNVERIFIED |
| SBStrong Built, INC | Waterproof | LA | — | ◇ UNVERIFIED |
 Strong Structural Steel, LTD | Pharr | TX | — | ◇ UNVERIFIED |
| STStroud's Texas Sheetmetal, LLC | Lubbock | TX | — | ◇ UNVERIFIED |
| SSStruc Steel INC | Spring Valley | CA | — | ◇ UNVERIFIED |
| SBStructall Building Systems, INC. | San Antonio | TX | — | ◇ UNVERIFIED |
| SCStructural Coatings, INC. | Clayton | NC | — | ◇ UNVERIFIED |
| SCStructural Coatings, INC. - Clayton | Clayton | NC | — | ◇ UNVERIFIED |
| SSStructural Steel Fabricators INC | Stanton | CA | — | ◇ UNVERIFIED |
| SSStructural Steel of Carolina - Hickory Steel | Hickory | NC | — | ◇ UNVERIFIED |
| SSStructural Steel Products Corporation | Clayton | NC | — | ◇ UNVERIFIED |
| SSStructural Steel Services Inc, Plant 3 | Meridian | MS | — | ◇ UNVERIFIED |
| SSStructural Steel Services, Inc., Plant 6 | Meridian | MS | — | ◇ UNVERIFIED |
| SSStructural Steel Services Inc, Plants 1 | Meridian | MS | — | ◇ UNVERIFIED |
| SSStructural Steel Services, Plant 1 | Meridian | MS | — | ◇ UNVERIFIED |
| SFStructure Fabricators | Evansville | IN | — | ◇ UNVERIFIED |
| SMStryker Metals LLC | Dayton | OH | — | ◇ UNVERIFIED |
| SMSTS Machine Incorporated | Tomball | TX | — | ◇ UNVERIFIED |
| SSStuart's Sheet Metal INC. | Austin | TX | — | ◇ UNVERIFIED |
| SSStuart's Sheet Metal, INC. | Leander | TX | — | ◇ UNVERIFIED |
| SStucke | Kent | WA | — | ◇ UNVERIFIED |
| SDStull Design and Manufactruring LLC | Burlington | KY | — | ◇ UNVERIFIED |
| SBStupp Bros INC | Richardsville | KY | — | ◇ UNVERIFIED |
| SLSturdy Lantern Manufacturing | Franklin | MA | — | ◇ UNVERIFIED |
| SSSuburban Steel Supply Company LLC | Gahanna | OH | — | ◇ UNVERIFIED |
| SBSudbury Brass Goods Company Incorporated | Chelsea | MA | — | ◇ UNVERIFIED |
| SBSudbury Brass Goods Company Incorporated | Malden | MA | — | ◇ UNVERIFIED |
| SSSudholt Sheet Metal, INC. | Aviston | IL | — | ◇ UNVERIFIED |
| SCSufrank Corporation | Lawton | OK | — | ◇ UNVERIFIED |
| SSSukup Steel Structures LLC | Ambridge | PA | — | ◇ UNVERIFIED |
| SMSulta Manufacturing Company | Sulphur Springs | TX | — | ◇ UNVERIFIED |
| SISulvan Industrial Piping | Perth Amboy | NJ | — | ◇ UNVERIFIED |
| SCSulzer Chemtech | Tulsa | OK | — | ◇ UNVERIFIED |
| SCSulzer Chemtech Usa, INC. | Tulsa | OK | — | ◇ UNVERIFIED |
| SCSummit Careers INC | East Longmeadow | MA | — | ◇ UNVERIFIED |
| SISummit INC | Portland | OR | — | ◇ UNVERIFIED |
| SSSummit Sheet Metal LLC | Kingston | PA | — | ◇ UNVERIFIED |
| SSSummit Sheet Metal LLC | Kingston | PA | — | ◇ UNVERIFIED |
| SSSummit Sheet Metal, LLC | Pittston | PA | — | ◇ UNVERIFIED |
| SSSummit Steel Works CORP | San Jose | CA | — | ◇ UNVERIFIED |
| SUSummit Utility Structures, LLC | Allentown | PA | — | ◇ UNVERIFIED |
| SASun Architectural Products, LLC | Cumming | GA | — | ◇ UNVERIFIED |
| SFSunburst Fabrications INC | Redmond | OR | — | ◇ UNVERIFIED |
| SMSuncoast Metal LLC | Sarasota | FL | — | ◇ UNVERIFIED |
| SASundrella Aluminum Products CO. | Phoenix | AZ | — | ◇ UNVERIFIED |
| SMSunlast Metal, INC. | Palm City | FL | — | ◇ UNVERIFIED |
| SMSun Metal - Doral Enterprises | Albuquerque | NM | — | ◇ UNVERIFIED |
