| WCWerner Company | Socorro | TX | — | ◇ UNVERIFIED |
| WCWerner Company Louisville | Louisville | KY | — | ◇ UNVERIFIED |
| WIWesanco INC | La Mirada | CA | — | ◇ UNVERIFIED |
| WFWesco Fountains, INC. | North Venice | FL | — | ◇ UNVERIFIED |
| WSWesco Spring CO | Chicago | IL | — | ◇ UNVERIFIED |
| WLWes LLC | Saint Paul | MN | — | ◇ UNVERIFIED |
| WLWes LLC Dba Ultralox | Eagan | MN | — | ◇ UNVERIFIED |
| WMWes Manufacturing, INC. | Santa Clara | CA | — | ◇ UNVERIFIED |
| WCWessels Company | Greenwood | IN | — | ◇ UNVERIFIED |
| WWWestbay Welding & Fabrication, INC. | Warwick | RI | — | ◇ UNVERIFIED |
| WCWest Coast Fabrication Inc. | White City | OR | — | ◇ UNVERIFIED |
| WCWest Coast Fabrication, INC. | White City | OR | — | ◇ UNVERIFIED |
| WCWest Coast Ironworks Inc | Federal Way | WA | — | ◇ UNVERIFIED |
| WCWest Coast Metalcrafts, INC. | Long Beach | CA | — | ◇ UNVERIFIED |
| WCWest Coast Rack INC | Los Angeles | CA | — | ◇ UNVERIFIED |
| WEWest Edge Design | San Francisco | CA | — | ◇ UNVERIFIED |
| WFWestern Forge & Flange Company | Albany | CA | — | ◇ UNVERIFIED |
 Western Industrial Contractors | Denver | CO | — | ◇ UNVERIFIED |
 Western Industries INC | Watertown | WI | — | ◇ UNVERIFIED |
| WIWestern Ironmakers INC. | Orem | UT | — | ◇ UNVERIFIED |
| WMWestern Mouldings | Upland | CA | — | ◇ UNVERIFIED |
| WPWestern Pacific Storage Systems, INC. | San Dimas | CA | — | ◇ UNVERIFIED |
| WWWestern Welding & Iron Works, X.trieu Db | South El Monte | CA | — | ◇ UNVERIFIED |
| WCWestfab Custom Fabrication, LLC | Worden | MT | — | ◇ UNVERIFIED |
| WGWestfield Grinding Wheel | Westfield | MA | — | ◇ UNVERIFIED |
| WMWest Manufacturing LLC | Carol Stream | IL | — | ◇ UNVERIFIED |
| WMWest Michigan Grinding and Machine, Inc. | Muskegon | MI | — | ◇ UNVERIFIED |
| WIWestmor Industries LLC - Truck | Morris | MN | — | ◇ UNVERIFIED |
| WBWeston Bauman | Shreve | OH | — | ◇ UNVERIFIED |
| WSWest Side Fabrication LLC | Colorado Springs | CO | — | ◇ UNVERIFIED |
| WTWest Tennessee Machine LLC | Camden | TN | — | ◇ UNVERIFIED |
| WDWet Design | North Hollywood | CA | — | ◇ UNVERIFIED |
| WRWeybridge Real Estate Holdings, LLC | Willoughby | OH | — | ◇ UNVERIFIED |
| WNW.f. Norman Corporation | Nevada | MO | — | ◇ UNVERIFIED |
| WNWheels Now Inc. | Waukesha | WI | — | ◇ UNVERIFIED |
| WIWhemco, INC. | West Homestead | PA | — | ◇ UNVERIFIED |
| WWWhetstone Workshop LLC | East Providence | RI | — | ◇ UNVERIFIED |
| WCWhirl-air-flow CORP - Big Lake | Big Lake | MN | — | ◇ UNVERIFIED |
| WCWhirl-air-flow CORP - Mpls | Minneapolis | MN | — | ◇ UNVERIFIED |
| WSWhitaker Studio | Ivins | UT | — | ◇ UNVERIFIED |
| WCWhited Carl & Son | Livingston | TN | — | ◇ UNVERIFIED |
| WKWhite Knuckle Kustoms | Windham | ME | — | ◇ UNVERIFIED |
| WOWhite Oak Radiator Service Old Hwy 80 | White Oak | TX | — | ◇ UNVERIFIED |
| WWWhite Welding Company, INC. | Waterbury | CT | — | ◇ UNVERIFIED |
| WEWhitman Enterprises, Inc. | Lakeland | FL | — | ◇ UNVERIFIED |
| WTWhitworth Tool, INC. | Sample | KY | — | ◇ UNVERIFIED |
| WDWilburn Darryl Donna | Pineville | LA | — | ◇ UNVERIFIED |
| WBWilcox Brothers INC | Walnut Grove | CA | — | ◇ UNVERIFIED |
| WAWilkes and Mclean, LTD. | Schaumburg | IL | — | ◇ UNVERIFIED |
| WDWilkins Design & Mfg INC Dba Wilschur Design & Mfg INC | Santa Ana | CA | — | ◇ UNVERIFIED |
| WIWillfab, INC. | Marietta | GA | — | ◇ UNVERIFIED |
| WCWillis Cnc, LLC | Grafton | OH | — | ◇ UNVERIFIED |
| WPWills Pro Custom Mfg | Fort Worth | TX | — | ◇ UNVERIFIED |
| WHWilmer Hernandez | Spring | TX | — | ◇ UNVERIFIED |
| WFWilson Fab, LLC | Sarasota | FL | — | ◇ UNVERIFIED |
| WIWiltcher Industries, INC. | Ocala | FL | — | ◇ UNVERIFIED |
| WMWinchester Metals INC | Winchester | VA | — | ◇ UNVERIFIED |
| WIWincraft INC - Corporate Office | Winona | MN | — | ◇ UNVERIFIED |
| WIWincraft INC - Distribution Center | Winona | MN | — | ◇ UNVERIFIED |
| WIWincraft INC - East Facility | Winona | MN | — | ◇ UNVERIFIED |
| WIWincraft INC - Mark Street | Winona | MN | — | ◇ UNVERIFIED |
| WIWincraft INC - West Facility | Winona | MN | — | ◇ UNVERIFIED |
 Win-holt Equipment CORP. | Allentown | PA | — | ◇ UNVERIFIED |
| WMWinnebago Manufacturing CO | Blue Earth | MN | — | ◇ UNVERIFIED |
| WPWinona Production Services INC - East Building | Winona | MN | — | ◇ UNVERIFIED |
| WIWinston Industrial Fabrication, LLC | Warminster | PA | — | ◇ UNVERIFIED |
| WEWinter Equipment Company | Willoughby | OH | — | ◇ UNVERIFIED |
| WIW International LLC | Madison Heights | MI | — | ◇ UNVERIFIED |
| WGWire Guard Systems INC | Huntington Park | CA | — | ◇ UNVERIFIED |
| WWWishart Welding & General Fabrication INC | Clackamas | OR | — | ◇ UNVERIFIED |
| WFWitherup Fabrication & Erection INC | Kennerdell | PA | — | ◇ UNVERIFIED |
| WHWj Haas Manufacturing Corporation | Hastings | MN | — | ◇ UNVERIFIED |
| WSW.m. Sprinkman | Waukesha | WI | — | ◇ UNVERIFIED |
| WTWolf Technologies, LLC | Douglassville | PA | — | ◇ UNVERIFIED |
| WPWonderland Products, INC. | Jacksonville | FL | — | ◇ UNVERIFIED |
| WPWoods Precision Products, INC. | Owasso | OK | — | ◇ UNVERIFIED |
| WWoodstock | Woodstock | IL | — | ◇ UNVERIFIED |
| WDWoodwards Diesel and Machine LLC | Boones Mill | VA | — | ◇ UNVERIFIED |
| WIWorldfab INC | Humble | TX | — | ◇ UNVERIFIED |
| WWWorld Way International INC. | Hialeah | FL | — | ◇ UNVERIFIED |
| WWWorld Wide Exchangers INC. | Skiatook | OK | — | ◇ UNVERIFIED |
| WEWorldwide Exchangers, INC. | Tulsa | OK | — | ◇ UNVERIFIED |
| WWWorldwide Welding Services | Humble | TX | — | ◇ UNVERIFIED |
| WWWorley Welding Works, INC. | Levelland | TX | — | ◇ UNVERIFIED |
| WAWorthington Armstrong Venture | Fontana | CA | — | ◇ UNVERIFIED |
| WAWorthington Armstrong Venture | Alpharetta | GA | — | ◇ UNVERIFIED |
| WAWorthington Armstrong Venture | Benton Harbor | MI | — | ◇ UNVERIFIED |
| WAWorthington Armstrong Venture | N Las Vegas | NV | — | ◇ UNVERIFIED |
| WCWorthington Cylinder | Claremore | OK | — | ◇ UNVERIFIED |
| WIWorthington Industries (0285030456) | Wooster | OH | — | ◇ UNVERIFIED |
| WSWorthington Steelpac | Greensburg | IN | — | ◇ UNVERIFIED |
| WIWps Industries INC | Ruston | LA | — | ◇ UNVERIFIED |
| WIWrisco Industries, INC. | Atlanta | GA | — | ◇ UNVERIFIED |
| WIWrought Iron Creations, INC. | Huntsville | TX | — | ◇ UNVERIFIED |
| WSW S Tyler Incorporated | Gastonia | NC | — | ◇ UNVERIFIED |
| WCWulf's Custom Welding, LLC | Springfield | NE | — | ◇ UNVERIFIED |
| WCWulf's Custom Welding, LLC | Springfield | NE | — | ◇ UNVERIFIED |
| WWW W Welding INC | Frenchburg | KY | — | ◇ UNVERIFIED |
| WSWyatt Studio, Inc. | Novato | CA | — | ◇ UNVERIFIED |
| WLWyle Lab Electronic Enclosures | El Segundo | CA | — | ◇ UNVERIFIED |
