| Name | Country | Market Cap (US$) |
|---|
| Avesta Sheffield (Norge) A/S | Norway | Private |
| AVESTA SHEFFIELD TRADING LTD | United Kingdom | Private |
| Avesta Welding AB | Sweden | Private |
| AvestaPolarit Oyj Abp | Finland | Private |
| Avestapolarit Plate Inc | United States | Private |
| Aveyronnaise de Metallurgie S.A. | France | Private |
| AVI Alpenländische Veredelungs - Industrie Gesellschaft m.b.H. | Austria | Private |
| Avian Adventures, Inc. | United States | Private |
| Aviation Metals Ltd | United Kingdom | Private |
| Avibank Mfg Inc | United States | Private |
| AVISO TECH INC. | Taiwan | Private |
| AVK Mittelmann Armaturen GmbH | Germany | Private |
| AVK Rewag B.V. | Netherlands | Private |
| Avocet Hardware Ltd | United Kingdom | Private |
| AWAI STEEL CO.,LTD. | Japan | Private |
| AWAJI MATERIA (THAILAND) COMPANY LIMITED | Thailand | Private |
| Awaji Sangyo K.K. | Japan | Private |
| AWS Achslagerwerk Staßfurt GmbH | Germany | Private |
| AXA Stenman Industries NV | Netherlands | Private |
| AXE METAL | France | Private |
| Axh Air Coolers, Llc | United States | Private |
| Axia Incorporated | United States | Private |
| Axis International Marketing Ltd | United States | Private |
| AXISMATERIA LTD. | Japan | Private |
| Axly Tool & Bushing Inc | United States | Private |
| AXMET INTERNATIONAL LTD | United Arab Emirates | Private |
| Axon Cable SA | France | Private |
| AZABU SEIKEI K.K. | Japan | Private |
| AZENN | France | Private |
| AZMAX CORP. | Japan | Private |
| Azon Ltd. | Australia | Private |
| Azovelectrostal Closed Joint Stock Company | Ukraine | Private |
| Aztec International, Inc | United States | Private |
| AZTECH, K.K. | Japan | Private |
| AZUMA KOGYO K.K. | Japan | Private |
| AZUMA MATERIAL CO,.LTD. | Japan | Private |
| AZUMA STEEL PIPE CO.,LTD. | Japan | Private |
| AZYNOX | France | Private |
| B & B Surplus, Inc | United States | Private |
| B & G Manufacturing Co Inc | United States | Private |
| B & S Automotive GmbH | Germany | Private |
| B + B Eisen- und Stahlhandel GmbH | Germany | Private |
| B C D Steels Ltd | United Kingdom | Private |
| B C S Cuyahoga L.L.C. | United States | Private |
| B F Shaw Inc | United States | Private |
| B M H Corp | United States | Private |
| B O L T A - W E R K E Gesellschaft mit beschränkter Haftung | Germany | Private |
| B R Holdings, Ltd. | United States | Private |
| B T L Inc | United States | Private |
| B. & K. STEELWORK FABRICATIONS LTD | United Kingdom | Private |
| B. A. Ballou & Company | United States | Private |
| B. Laufenberg Gesellschaft mit beschränkter Haftung | Germany | Private |
| B. u. F. Metallhandels GmbH | Germany | Private |
| B.A. Geurts-Janssen B.V. | Netherlands | Private |
| B.E.S. Brandenburger Elektrostahlwerke GmbH | Germany | Private |
| B.F.E. SPA | Italy | Private |
| B.M.B. MECCANICA SNC DI RAVERA GIAN FRANCO & C. | Italy | Private |
| B.MASON & SONS LTD | United Kingdom | Private |
| b.s.u.biebertaler stanz-und umformtechnik GmbH & Co.KG | Germany | Private |
| B.T.E. SPA | Italy | Private |
| B.U.S Steel Services GmbH | Germany | Private |
| B.V. "NEDEXIMPO" Nederlandse Export- en Importmaatschappij | Netherlands | Private |
| B.V. Aluminium Verkoop Zuid (A.V.Z.) | Netherlands | Private |
| B.V. De Gele Pijl | Netherlands | Private |
| BA TUBES LTD | United Kingdom | Private |
| BAB Stahlhandelsges. mbH | Germany | Private |
| BABA SHOTEN, G.K. | Japan | Private |
| BABACHO, K.K. | Japan | Private |
| Babcock Borsig Capital Corp | United States | Private |
| Babcock Noell GmbH | Germany | Private |
| Babcock Power Inc | United States | Private |
| Badger Foundry Company | United States | Private |
| Badische Stahlwerke GmbH (BSW) | Germany | Private |
| BAEST, a.s. | Czech Republic | Private |
| BAGR Aluminiumverarbeitung in Berlin GmbH | Germany | Private |
| Bahntechnik Brand-Erbisdorf GmbH | Germany | Private |
| Bahrain Saudi Aluminium Marketing Co | Bahrain | Private |
| Baker Enterprises Inc | United States | Private |
| Bakersfield Pipe And Supply, Inc | United States | Private |
| Bal-Seal Engineering Co | United States | Private |
| Baldwin Steel Company | United States | Private |
| BALL PACKAGING EUROPE BIERNE | France | Private |
| BALL PACKAGING EUROPE LA CIOTAT | France | Private |
| Ballarini Paolo & Figli Spa | Italy | Private |
| Balli Steel Asia Limited | Hong Kong | Private |
| Balli Steel Plc | United Kingdom | Private |
| Balon Corporation | United States | Private |
| Balzers Inc | United States | Private |
| BAMAREC PRECISION COMPONENTS EUROPE | France | Private |
| BAN SENG LEE INDUSTRIES SDN BHD | Malaysia | Private |
| Bandak Group AS | Norway | Private |
| BANDINELLI E FORNI SRL METALLI | Italy | Private |
| BANDO DENSEN CO. LTD. | Japan | Private |
| Bangkok Cable Company, Ltd. | Thailand | Private |
| BANKIN KOGYO K.K. | Japan | Private |
| BANKYO CO.,LTD. | Japan | Private |
| Bänninger Kunststoff Produkte GmbH | Germany | Private |
| BANSEI STEEL CO.,LTD. | Japan | Private |
| Bao Steel Group Eng. &Equi Co. Ltd. | China | Private |
| Baoding Longda Aluminium Industry Co.,Ltd. | China | Private |
|
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