| PFPro Fabrication INC | Madison Lake | MN | — | ◇ UNVERIFIED |
| PIPro-Mation, Inc. | Kenosha | WI | — | ◇ UNVERIFIED |
| PIPsf Industries | Seattle | WA | — | ◇ UNVERIFIED |
| PSPsi Sales INC | Irvington | AL | — | ◇ UNVERIFIED |
| PIPvi Industries Incorporat | Fort Worth | TX | — | ◇ UNVERIFIED |
| QAQuality Assured Controls, INC. | Augusta | GA | — | ◇ UNVERIFIED |
| QFQuality Fab of Emily INC | Emily | MN | — | ◇ UNVERIFIED |
| QSQuality Steel | Cleveland | MS | — | ◇ UNVERIFIED |
| QSQuality Steel Corporation- Fuel Storage Tank Manufacturing Plant | West Jordan | UT | — | ◇ UNVERIFIED |
| QMQualtek Mfg., INC. (was Minco & Maxcor) | Colorado Springs | CO | — | ◇ UNVERIFIED |
| QMQuest Metal Solutions | Fort Worth | TX | — | ◇ UNVERIFIED |
| RIRack Industries, LLC | Midland | TX | — | ◇ UNVERIFIED |
| RIRad-Con Inc | Lakewood | OH | — | ◇ UNVERIFIED |
| RCRadius Concepts LLC | Cincinnati | OH | — | ◇ UNVERIFIED |
| RTRagan Technologies INC | San Diego | CA | — | ◇ UNVERIFIED |
| RIRaughley, INC. | Birmingham | AL | — | ◇ UNVERIFIED |
| RIRcs Industries INC | Riverside | CA | — | ◇ UNVERIFIED |
| RRRed River Precision Mfg., Inc. | Round Rock | TX | — | ◇ UNVERIFIED |
| RTReliance Truck & Equipment LTD | San Antonio | TX | — | ◇ UNVERIFIED |
| RSReliant Specialty Equipment Corporation | Montgomery | AL | — | ◇ UNVERIFIED |
| RMRestoration Management Company | Lake Elsinore | CA | — | ◇ UNVERIFIED |
| RMReynolds Manufacturing Company | Avonmore | PA | — | ◇ UNVERIFIED |
| RFRichard's Fab Shop LLC | Sumter | SC | — | ◇ UNVERIFIED |
| RERite Engineering & Manufacturing CORP | Commerce | CA | — | ◇ UNVERIFIED |
| RPRite-hite Products Corporation | Memphis | TN | — | ◇ UNVERIFIED |
| RCRiver City Metal Fabrication, LLC | Baton Rouge | LA | — | ◇ UNVERIFIED |
| RKR K Fabrication | Anaheim | CA | — | ◇ UNVERIFIED |
| RWRLC Welding & Fabrication, LLC | Louisville | KY | — | ◇ UNVERIFIED |
| RIRnk Industries, INC | Los Angeles | CA | — | ◇ UNVERIFIED |
| RVR&n Ventures, INC | Houston | TX | — | ◇ UNVERIFIED |
| RFRobertson Fabrication, INC | Greenwood | MS | — | ◇ UNVERIFIED |
| RTRocore Thermal Systems LLC | Burkesville | KY | — | ◇ UNVERIFIED |
| RARotary Airlock LLC | Rock Falls | IL | — | ◇ UNVERIFIED |
| RRotoflow | Bethlehem | PA | — | ◇ UNVERIFIED |
| RMRoura Material Handling INC | Holly Springs | MS | — | ◇ UNVERIFIED |
 Roy E Hanson Jr Mfg CO | Los Angeles | CA | — | ◇ UNVERIFIED |
| RPRudco Products INC. | Vineland | NJ | — | ◇ UNVERIFIED |
| RMRyan Manufacturing, INC. | East Palatka | FL | — | ◇ UNVERIFIED |
| SRSamberg Rod and Custom | Martinez | CA | — | ◇ UNVERIFIED |
| SFSamples Fab and Industrial Services LLC | Wills Point | TX | — | ◇ UNVERIFIED |
| SPSamuel Plate Processing Johnstown LLC | Johnstown | PA | — | ◇ UNVERIFIED |
| SLSan Luis Garbage | San Luis Obispo | CA | — | ◇ UNVERIFIED |
| SMSatellite Manufacturing CO INC | Pomona | CA | — | ◇ UNVERIFIED |
| SBS Bravo Systems INC | Commerce | CA | — | ◇ UNVERIFIED |
| SIScaltech INC | Rodeo | CA | — | ◇ UNVERIFIED |
| SIScorpius Industries LLC | Hesston | KS | — | ◇ UNVERIFIED |
| SISeestra, INC. | Jacksonville | FL | — | ◇ UNVERIFIED |
| SESellers Engineering Company | Danville | KY | — | ◇ UNVERIFIED |
| SPSen-dure Products INC | Fort Lauderdale | FL | — | ◇ UNVERIFIED |
| SWServall Welding And Fabrication Inc | Greenville | NC | — | ◇ UNVERIFIED |
| SWService Welding and Machine | Louisville | KY | — | ◇ UNVERIFIED |
| SASfc Adams INC. | Buffalo | NY | — | ◇ UNVERIFIED |
| SPSheet Pile LLC | Holderness | NH | — | ◇ UNVERIFIED |
| SSShelby Steel Vincent Incorporated | Vincent | AL | — | ◇ UNVERIFIED |
| SOSIG OpCo LLC | Sturgis | MI | — | ◇ UNVERIFIED |
| S3Slant 3D LLC | Boise | ID | — | ◇ UNVERIFIED |
| SFSmith-sharpe Fire Brick Supply | Minneapolis | MN | — | ◇ UNVERIFIED |
| SASMT Automation LLC | Roseville | MI | — | ◇ UNVERIFIED |
| SSSMT Services, LLC | Bruce Township | MI | — | ◇ UNVERIFIED |
| SPSoutheastern Plateworks | Birmingham | AL | — | ◇ UNVERIFIED |
| SBSouthern Boiler & Tank Works, Incorporat | Memphis | TN | — | ◇ UNVERIFIED |
| SESouthern Erectors INC | Pensacola | FL | — | ◇ UNVERIFIED |
| SMSouthern Machinery CORP | Lakeland | FL | — | ◇ UNVERIFIED |
| SGSouth Gate Engineering LLC | Chino | CA | — | ◇ UNVERIFIED |
| SSSouthwestern Supply & Machine Works* | Saint Joseph | MO | — | ◇ UNVERIFIED |
| SLSpadone, LLC | Dresher | PA | — | ◇ UNVERIFIED |
| SSpincraft | Billerica | MA | — | ◇ UNVERIFIED |
| SLSpire, LLC | Troy | VA | — | ◇ UNVERIFIED |
| SGSquare Group, LLC | Chesterfield | MI | — | ◇ UNVERIFIED |
| SESquickmon's Engineering & Automation, L.L.C. | Phoenix | AZ | — | ◇ UNVERIFIED |
| SWSsab Wear Solutions LLC | Birmingham | AL | — | ◇ UNVERIFIED |
| SFStainless Fabricators, INC. | Belle Chasse | LA | — | ◇ UNVERIFIED |
| SMStar Manufacturing,llc | Orange | CA | — | ◇ UNVERIFIED |
| SFState Fabricators | Livonia | MI | — | ◇ UNVERIFIED |
| SFState Fabricators, INC. | Farmingtn Hls | MI | — | ◇ UNVERIFIED |
| SISteelworks INC | Trenton | MI | — | ◇ UNVERIFIED |
| SMSteffes Metal Products, LLC - Grand Forks West | Grand Forks | ND | — | ◇ UNVERIFIED |
| SMStellar Mold & Tool, INC. | Galesville | WI | — | ◇ UNVERIFIED |
| SWStevens Welding and Fabrication LLC | Eveleth | MN | — | ◇ UNVERIFIED |
| SZSteve Zappetini & Son INC | San Rafael | CA | — | ◇ UNVERIFIED |
| SLSt Lucie County International Airport | Fort Pierce | FL | — | ◇ UNVERIFIED |
| SIStolberger INC. Dba Wardwell Braiding CO. | Central Falls | RI | — | ◇ UNVERIFIED |
| SRStoney Ridge Fabricators | Palmerton | PA | — | ◇ UNVERIFIED |
| SLStraight Line Steering | San Jose | CA | — | ◇ UNVERIFIED |
| SIStrasbaugh, INC | San Luis Obispo | CA | — | ◇ UNVERIFIED |
| SIStratasys INC | Eden Prairie | MN | — | ◇ UNVERIFIED |
| SWStruthers Wells Corp/warren | Warren | PA | — | ◇ UNVERIFIED |
| SBStupp Bros INC | Richardsville | KY | — | ◇ UNVERIFIED |
| SBStyle By Design Properties, LLC | Beckley | WV | — | ◇ UNVERIFIED |
| SSSudden Services Inc, Distribution and Operations Center | Philadelphia | MS | — | ◇ UNVERIFIED |
| SSSulphur Sheet Metal & Fabrication, INC. | Sulphur | LA | — | ◇ UNVERIFIED |
| SPSumi Printing and Binding Ic. | Carson | CA | — | ◇ UNVERIFIED |
| SFSunbelt Fabricator | Steele | AL | — | ◇ UNVERIFIED |
| SCSunchemical Corporation - Concord Facility | Concord | CA | — | ◇ UNVERIFIED |
| SCSuperior Controls, LLC Dba Redviking | Plymouth | MI | — | ◇ UNVERIFIED |
| SFSuperior Fabrication, INC | Elk City | OK | — | ◇ UNVERIFIED |
| SFSuperior Fabrication, INC. | Ada | OK | — | ◇ UNVERIFIED |
| SFSuperior Fabricators INC | Baldwin | LA | — | ◇ UNVERIFIED |
| SPSupremo Products, LLC | Adamsburg | PA | — | ◇ UNVERIFIED |
| SISweco Icc | Florence | KY | — | ◇ UNVERIFIED |
