- Allied Tube & Conduit
- Altamar Laser
- American Cast Iron Pipe Co
- Ameron Steel Fabrication
- Azco Inc
- Beck Industries
- Bellville Tube Co
- Bellville Tube Co
- Bellville Tube Co LP
- Bendtech
- Berg Steel Pipe Corp
- Bohler Uddeholm Spec Metals
- Bohn & Dawson Inc
- Brenn's Pub
- Brenner Coach & Limousine
- Brenner Furniture
- Brenner Furniture
- Brenner Htg & Air Conditioning
- Brenner Insurance
- Brenner KIA
- Brenner Machine Co
- Brenner Motors Inc
- Brenner Motors Inc
- Brenner Nissan
- Brenner Painting
- Brenner Recycling
- Brenner Tool & Die Inc
- Brenner Wood Products
- Brenner's Allstar Cafe
- Brenntag Inc
- Brenntag Inc
- Brenntag Northeast
- Brevard Boiler Co
- Bull Moose Tube Co
- Bull Moose Tube Co
- Bull Moose Tube Co
- Bussey Well Pipe Works
- California Steel & Tube
- California Steel & Tube
- CEMCO
- Central Nebraska Tubing
- Centron International Inc
- Columbia Structural Tubing
- Commercial Honing Inc
- Contech Construction Prods Inc
- Contech Construction Prods Inc
- Contech Construction Prods Inc
- Contech Construction Prods Inc
- Copperweld Corp
- Curtis Maruyasu America Inc
- Dofasco Marion Inc
- Dothan Tubular Products
- Egging Co
- Elm Steel Inc
- Energy Task Force
- Enertrans
- English Boiler & Tube Inc
- Fab Pipe Inc
- Faurecia Exhaust Systems
- Fin-Fab
- Fraser Steel Co Inc
- G & L Mfg Inc
- Grant Prideco Inc
- Grant Prideco Inc
- Grant Prideco Inc
- Grant Prideco Inc
- Grant Prideco-Tube Alloy Corp
- Greenville Tube Corp
- Grif-Fab Corp
- Hanna Steel Corp
- Hanna Steel Corp
- Harco Metal Production
- Haydon Corp
- Index-Steel
- Indiana Tube Corp
- IPSCO Tubulars Inc
- ITW Air Management
- J & J Tube Inc
- Jackson Tube Svc Inc
- James Steel & Tube Co
- James Steel & Tube Co
- John Maneely Co
- Jonesville Products Inc
- KDC Holding
- Kent Systems
- KIRK Eastern Inc
- KMK Metal Fabricators
- KMK Metal Fabricators
- KMK Metal Fabricators
- KMK Metal Fabricators
- Kraftube Inc
- Kubik WJ Plymouth Tube Co
- L B Foster Co
- LA Barge Pipe & Steel Co
- LA Barge Pipe & Steel Sales
- Ladish Diecast Tooling
- Lone Star Technologies Inc
- Long's Blow Pipe Inc
- Major Metals Co
- Markin Tubing Inc
- Markin Tubing Inc
- Marmon/Keystone Corp
- Martin Co
- Maverick Tube Corp
- Maverick Tube Corp
- Maverick Tube Corp
- Maverick Tube Corp
- Mc Hone Industries Inc
- Metal-Matic
- Metalforming Technologies Inc
- Metco Spiral Pipe & Fittings
- MFI Metal Supply Co Inc
- Middletown Tube Works Inc
- Monroe Tube Co Inc
- Northwest Pipe
- Northwest Pipe Co
- Northwest Pipe Co
- Northwest Pipe Co
- Northwest Pipe Co
- Northwest Pipe Co
- Northwest Pipe Co
- NS Group Inc
- Oakley Tube Div
- Ohio Drilling Co
- Oilfield Pipe & Supply
- Or Culvert Co
- Outokumpu Stainless Pipe
- P & P Specialty Tubes
- Panther Tube
- Parker-Hannifin Corp
- Parthenon Metal Works
- Pelco Structural
- Perforated Tubes Inc
- Plymouth Tube Co
- Plymouth Tube Co
- Plymouth Tube Co
- Plymouth Tube Co
- Plymouth Tube Co
- Quality Tube Svc Inc
- Rathe Manufacturing Co Inc
- Rentec Corp
- RMR Speedlab
- Robert James Sales Inc
- S-Square Tube Products
- Schuetz Container
- Scot Industries
- Scot Industries Inc
- Service Steel
- Sharon Tube Co
- Sharon Tube Co
- Shaw Connex Inc
- Shearer Custom Pipes
- Shelby Enterprises Inc
- Slob & Son's Welding Co
- Southeast Tube
- Southern Tube Form
- Southland Tube Inc
- Sterling Pipe & Tube Inc
- Stupp Corp
- Swepco Tube Corp
- T I Group Automotive Systems
- T I Group Automotive Systems
- TBC Metalworks
- Tellico Culvert Co Inc
- Texas Tubular Products
- Thermacor Process Inc
- Thomas J Dyer Co
- Thompson Culvert Co
- Ti Automotive
- Trent Tube
- Troxel Co
- Truswal Systems Corp
- Tube Alloy Corp
- Tube Tech Inc
- Tubesource
- Tubespec Inc
- Tubular Products Co Inc
- Tubular Steel Inc
- U S Industrial Piping Inc
- U S Metal Forms & Tubes Inc
- U S Metal Forms & Tubes Inc
- Ultimate Tubal Products
- Uniprise Sales Corp
- United Industries Inc
- United States Steel Corp
- United Tube Corp
- United Tube Corp
- UNR-Leavitt
- Valmont Industries Inc
- Valmont Industries Inc
- Valmont International Corp
- Valmont International Corp
- Valmont International Corp
- Valmont International Corp
- Victor Pipe & Steel Inc
- Webco Industries Inc
- Webco Industries Inc
- Webco Industries Inc
- Webco Industries Inc
- Webco Industries Inc
- Welded Tube Inc
- Wheatland Tube Co
- Wheatland Tube Co
- Wheatland Tube Co
- Wheatland Tube Co
- Wheatland Tube Co
- Wheatland Tube Co
- Wheatland Tube Co
- Whitley Products Inc
- Wiginton Fire Sprinklers Inc
- Wolverine Power Products