Exhibit 8.1
Tenaris – List of subsidiaries of Tenaris S.A.
Principal subsidiaries
The following is a list of Tenaris’s subsidiaries and its direct or indirect percentage of ownership of each company at December 31, 2004, 2003 and 2002.
Company | Country of | Main activity | Percentage of ownership at December 31, | ||||||||||
2004 | 2003 | 2002 | |||||||||||
Algoma Tubes Inc. | Canada | Manufacturing of seamless steel pipes | 100 | % | 100 | % | 98 | % | |||||
Confab Industrial S.A. and subsidiaries (b) | Brazil | Manufacturing of welded steel pipes and capital goods | 39 | % | 39 | % | 39 | % | |||||
Corporación Tamsa S.A. | Mexico | Sale of seamless steel pipes | — | — | 94 | % | |||||||
Dalmine Holding B.V. and subsidiaries | Netherlands | Holding company | 99 | % | 99 | % | 88 | % | |||||
Dalmine S.p.A. | Italy | Manufacturing of seamless steel pipes | 99 | % | 99 | % | 88 | % | |||||
Empresas Riga S.A. de C.V. | Mexico | Manufacturing of welded fittings for seamless steel pipes | 100 | % | 100 | % | 94 | % | |||||
Exiros S.A. | Uruguay | Procurement services for industrial companies | 100 | % | 100 | % | — | ||||||
Information Systems and Technologies N.V. and subsidiaries | Netherlands | Software development and maintenance | 75 | % | 75 | % | 70 | % | |||||
Inmobiliaria Tamsa S.A. de C.V. | Mexico | Leasing of real estate | 100 | % | 100 | % | 94 | % | |||||
Insirger S.A. and subsidiaries | Argentina | Electric power generation | 100 | % | 100 | % | — | ||||||
Intermetal Com SRL (a) | Romania | Marketing of Scrap and other raw materials | 100 | % | — | — | |||||||
Invertub S.A. and subsidiaries | Argentina | Holding company | 100 | % | 100 | % | 100 | % | |||||
Lomond Holdings B.V. and subsidiaries | Netherlands | Procurement services for industrial companies | 100 | % | 100 | % | 70 | % | |||||
Matesi, Materiales Siderurgicos S.A. (a) | Venezuela | Production of hot briquetted iron (HBI). | 50 | % | — | — | |||||||
Metalcentro S.A. | Argentina | Manufacturing of pipe-end protectors and lateral impact tubes | 100 | % | 100 | % | 100 | % | |||||
Metalmecánica S.A. | Argentina | Manufacturing steel products for oil extraction | 100 | % | 100 | % | 99 | % | |||||
NKKTubes K.K. | Japan | Manufacturing of seamless steel pipes | 51 | % | 51 | % | 51 | % | |||||
S.C. Silcotub S.A. and subsidiary (a) | Romania | Manufacturing of seamless steel pipes | 85 | % | — | — | |||||||
Scrapservice S.A. | Argentina | Processing of scrap | 75 | % | 75 | % | 74 | % | |||||
Siat S.A. | Argentina | Manufacturing of welded steel pipes | 82 | % | 82 | % | 81 | % | |||||
Siderca International A.p.S. | Denmark | Holding company | 100 | % | 100 | % | 99 | % | |||||
Siderca S.A.I.C. | Argentina | Manufacturing of seamless steel pipes | 100 | % | 100 | % | 99 | % |
Principal subsidiaries (Cont’d.)
Company | Country of | Main activity | Percentage of ownership at December 31, | ||||||||||
2004 | 2003 | 2002 | |||||||||||
Siderestiba S.A. | Argentina | Logistics | 99 | % | 99 | % | 99 | % | |||||
Sidtam Limited | B.V.I. | Holding company | 100 | % | 100 | % | 97 | % | |||||
SO.PAR.FI Dalmine Holding S.A. | Luxembourg | Holding company | 99 | % | 99 | % | 88 | % | |||||
Sociedad Industrial Puntana S.A. | Argentina | Manufacturing of steel products | 100 | % | 100 | % | — | ||||||
Socominter Far East Ltd. | Singapore | Marketing of steel products | — | — | 100 | % | |||||||
Socominter Ltda. | Chile | Marketing of steel products | 100 | % | 100 | % | 100 | % | |||||
Socominter S.A. | Venezuela | Marketing of steel products | 100 | % | 100 | % | 100 | % | |||||
Socover S.A. de C.V. | Mexico | Marketing of steel products | — | — | 94 | % | |||||||
Talta – Trading e Marketing Lda. (a) | Madeira | Holding Company | 100 | % | — | — | |||||||
Tamsider LLC | U.S.A. | Holding company | 100 | % | 100 | % | 100 | % | |||||
Tamsider S.A. de C.V. and subsidiaries | Mexico | Promotion and organization of steel-related companies and marketing of steel products | 100 | % | 100 | % | 94 | % | |||||
Tamtrade S.A.de C.V. | Mexico | Marketing of steel products | 100 | % | 100 | % | 94 | % | |||||
Techint Investment Netherlands B.V. | Netherlands | Holding company | 100 | % | 100 | % | 99 | % | |||||
Tenaris Autopartes S.A. de C.V. | Mexico | Manufacturing of supplies for the automotive industry | 100 | % | 100 | % | — | ||||||
Tenaris Confab Hastes de Bombeio (a) | Brazil | Manufacturing of steel products for oil extraction | 70 | % | — | — | |||||||
Tenaris Connections A.G. and subsidiaries | Liechtenstein | Ownership and licensing of steel technology | 100 | % | 99 | % | 94 | % | |||||
Tenaris Financial Services S.A. | Uruguay | Financial Services | 100 | % | 100 | % | — | ||||||
Tenaris Global Services B.V. | Netherlands | Sales agent of steel products | 100 | % | 100 | % | 100 | % | |||||
Tenaris Global Services (Canada) Inc. | Canada | Marketing of steel products | 100 | % | 100 | % | 100 | % | |||||
Tenaris Global Services (U.S.A.) Corporation (previously Siderca Corporation) | U.S.A. | Marketing of steel products | 100 | % | 100 | % | 100 | % | |||||
Tenaris Global Services de Bolivia S.R.L. (previously Socominter de Bolivia S.R.L.) | Bolivia | Marketing of steel products | 100 | % | 100 | % | 100 | % | |||||
Tenaris Global Services (Japan) K.K. (previously DST Japan K.K.) | Japan | Marketing of steel products | 100 | % | 100 | % | 100 | % | |||||
Tenaris Global Services Norway AS | Norway | Marketing of steel products | 100 | % | 100 | % | 100 | % |
Principal subsidiaries (Cont’d.)
Company | Country of | Main activity | Percentage of ownership at December 31, | ||||||||||
2004 | 2003 | 2002 | |||||||||||
Tenaris Global Services (Panama) S.A. | Panama | Marketing of steel products | 100 | % | 100 | % | 100 | % | |||||
Tenaris Global Services (UK) Ltd | United Kingdom | Marketing of steel products | 100 | % | 100 | % | 100 | % | |||||
Tenaris Global Services S.A. | Uruguay | Holding company and marketing of steel products | 100 | % | 100 | % | 100 | % | |||||
Tenaris Global Services Ecuador S.A. | Ecuador | Marketing of steel products | 100 | % | 100 | % | — | ||||||
Tenaris Global Services Far East Pte. Ltd. | Singapore | Marketing of steel products | 100 | % | 100 | % | 100 | % | |||||
Tenaris Global Services Korea | Korea | Marketing of steel products | 100 | % | 100 | % | — | ||||||
Tenaris Global Services LLC | U.S.A. | Sales agent of steel products | 100 | % | 100 | % | 100 | % | |||||
Tenaris Global Services (B.V.I.) Ltd. | B.V.I. | Holding company | 100 | % | 100 | % | 100 | % | |||||
Tenaris Global Services Nigeria Ltd. (Previously Tubular DST Nigeria Ltd.) | Nigeria | Marketing of steel products | 100 | % | 100 | % | 100 | % | |||||
Tenaris Global Services (Kazakhstan ) LLP (a) | Kazakhstan | Marketing of steel products | 100 | % | — | — | |||||||
Tenaris Investments Ltd. (a) | Ireland | Holding company | 100 | % | — | — | |||||||
Tenaris West Africa Ltd. | United Kingdom | Finishing of steel pipes | 100 | % | 100 | % | 98 | % | |||||
Texas Pipe Threaders Co. | U.S.A. | Finishing and marketing of steel pipes | 100 | % | 100 | % | 99 | % | |||||
Tubman International Ltd. (a) | Gibraltar | Holding company | 100 | % | — | — | |||||||
Tubman Holdings (Gibraltar) LLP (a) | Gibraltar | Holding company | 100 | % | — | — | |||||||
Tubos de Acero de México S.A. | Mexico | Manufacturing of seamless steel pipes | 100 | % | 100 | % | 94 | % | |||||
Tubos de Acero de Venezuela S.A. | Venezuela | Manufacturing of seamless steel pipes | 70 | % | 70 | % | 66 | % |
(a) | Incorporated or acquired during 2004 |
(b) | Tenaris holds 99% of the voting shares of Confab Industrial S.A. and has, directly or indirectly, the majority of voting rights in all of its subsidiaries. |