◇ A. Finkl & Sons Co
◇ A.T. Wall Co
◇ A11egheny Ludlum Corp
◇ Acme Steel Co
◇ Acme/Romac
◇ AK Steel Corp
◇ AK Tube LLC
◇ Allegheny Technologies Inc
◇ Allied Tube & Conduit Corp
◇ Allvac-An Allegheny Technologies Co
◇ American Extruded Products
◇ American Steel Pipe-A Division of American Cast Ir
◇ AmeriSteel Corp
◇ Ametek Inc，Specialty Metal Products Division
◇ Apollo Metals
◇ AvestaPolarit Bar Co
◇ AvestaPolarit Inc
◇ AvestaPolarit Pipe Co
◇ Bayou Coating LLC
◇ Bayou Steel Corp
◇ Berg Steel Pipe Corp
◇ Bethlehem Steel Corp
◇ BethNova Tube LLC
◇ Birmingham Steel Corp
◇ Blair Strip Steel Co
◇ Bohler-Uddeholm North America
◇ Border Steel Inc
◇ Braeburn Alloy Steel Division
◇ Bristol Metals L.P.
◇ Bull Moose Tube Co
◇ California Steel & Tube
◇ California Steel Industries Inc
◇ Carpenter Technology Corp （Carpenter Specialty Al
◇ Central Nebraska Tubing
◇ Chicago Cold Rolling LLC
◇ Chicago Heights Steel
◇ Citisteel USA Inc
◇ Cleveland-Cliffs Inc
◇ CMC Steel Group
◇ Cold Metal Products Inc
◇ Connecticut Steel Corp
◇ Copperweld
◇ Corus Tuscaloosa
◇ Co-Steel Raritan
◇ Co-Steel Sayreville
◇ Crucible Compaction Metals，division of Crucible M
◇ Davis Pipe
◇ DMV Stainless USA Inc
◇ Double G Coatings Co LP
◇ Duferco Farrell Corp
◇ Dunkirk Specialty Steel LLC
◇ Electralloy
◇ Ellwood Quality Steels Co
◇ Erasteel Inc
◇ Euramax International plc
◇ Firth Rixson Metals Inc
◇ Fischer Stainless Steel Tubing Inc
◇ Franklin Industries Co
◇ G.O. Carison Inc
◇ Gallatin Steel Co
◇ Geneva Steel Holdings Corp
◇ Georgetown Steel Corp LLC
◇ Gibraltar Steel Corp
◇ Greenville Metals Inc
◇ Greer Steel Co
◇ Gregory Industries
◇ Hamilton Precision Metals Inc
◇ Handy & Harman Tube Co Inc
◇ Hanna Steel Corp
◇ Hoeganaes Corp
◇ International Tubular Products Inc
◇ ISG Cleveland
◇ Ispat Inland Inc
◇ Istil（USA）Milton Inc
◇ J & L Specialty Steel Inc
◇ J & L Structural Inc
◇ James Steel & Tube Co
◇ John Maneely Co
◇ Kentucky Electric Steel Inc（KESI）
◇ Keystone Steel & Wire Co
◇ Leavitt Tube Co Inc
◇ Leo Inc
◇ LeTourneau Inc-Steel Group
◇ Lone Star Steel Co
◇ Macsteel
◇ Marcegaglia USA Inc
◇ Marion Steel Co
◇ Maverick Tube Corp
◇ McDonald Steel Corp
◇ MSC EngineeredMaterials & Solutions Group
◇ National Forge Co
◇ National Galvanizing L.P.
◇ National Steel Corp
◇ National Steel Corp，Granite City Division
◇ National Steel Corp，Great Lakes Operations
◇ National Steel Corp，Midwest Operations
◇ Nelsen Steel Co
◇ North American Hoganas
◇ North American Stainless LP
◇ North Star BHP Steel Ltd
◇ North Star Co Inc
◇ North Star Steel Co（NSS）
◇ Northwest Pipe Co
◇ NS Group Inc
◇ Nucor Corp
◇ Nucor Decatur
◇ Nucor-Yamato Steel Co
◇ Ohio Coatings Co
◇ Olympic Steel Inc
◇ Oregon Steel Mills Inc
◇ Penninox America Corp
◇ Phoenix Tube Co Inc
◇ Pittsburgh Flatroll Co
◇ Pittsburgh Tool Steel Inc
◇ Plymouth Tube Co
◇ Precision Kidd Steel Co
◇ Precision Specialty Metals Inc（PSM）
◇ Precoat Metals
◇ Pro-Tec Coating Co
◇ Prudential Steel Inc
◇ PTC Alliance
◇ Quality Tubing Inc-QTI
◇ Rafferty-Brown Steel Co Inc of Connecticut
◇ Rafferty-Brown Steel Co Inc of North Carolina
◇ Rath Manufacturing Co Inc
◇ Remelt Sources Inc
◇ Republic Technologies International
◇ RhinoTube LLC
◇ Roll Coater Inc
◇ Roll Forming Corp
◇ Rome Strip Steel Co Inc
◇ Rouge Industries Inc
◇ Sandvik Steel Co
◇ Scientific Tube Inc
◇ Sheffield Steel Corp
◇ Slater Steels Corp，Fort Wayne Specialty Alloys Di
◇ Somers Thin Strip
◇ Spartan Steel Coating LLC
◇ Special Metals Corp
◇ Standard Steel
◇ Steel Dynamics Inc
◇ Steelscape Inc
◇ Stripco Inc
◇ Stupp Corp
◇ Superior Tube Co
◇ Tamco
◇ Tex Tube Co
◇ Texas Tubular Products
◇ The International Metals Reclamation Co Inc -Inmet
◇ The Techs
◇ The Timken Co
◇ Theis Precision Steel Corp
◇ Thomas Steel Strip
◇ Thompson Steel Co Inc
◇ Timken Latrobe Steel Co
◇ Trefilarbed Arkansas Inc
◇ Trent Tube
◇ Trinity Industries Inc-Highway Safety Products Div
◇ TriWestern Metals Co（Triumph Industries Division
◇ TXI Chaparral Steel Co
◇ Ulbrich Stainless Steels & Special Metals Inc
◇ Uniform Tubes Inc-UTI
◇ United States Steel Corp
◇ Universal Stainless & Alloy Products Inc
◇ USS-Posco Industries Inc
◇ Usui International Corp
◇ Vision Metals Inc
◇ WCI Steel Inc
◇ Weirton Steel Corp
◇ Western Tube & Conduit Corp
◇ Wheatland Tube Co
◇ Wheeling-Nisshin Inc
◇ Wheeling-Pittsburgh Steel Corp
◇ Winner Steel Inc
◇ Worthington Industries Inc
◇ Wyman-Gordon/Houston Operations
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