|FORM 6-K
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|SECURITIES AND EXCHANGE COMMISSIONWashington, D.C. 20549
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|Report of Foreign Private
Issuer  Pursuant to Rule 13a - 16 or 15d - 16 of  the Securities Exchange Act of 1934
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|As of March 7, 2003
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|TENARIS, S.A.(Translation of Registrants name into English)
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|TENARIS, S.A.23 Avenue Monterey 
      2086 Luxembourg 
      (Address of principal executive offices)
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|Indicate by check mark whether the registrant
      files or will file annual reports under cover
      Form 20-F or 40-F.
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|Form 20-F [X]     Form
      40-F []
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|Indicate by check
mark whether the registrant by furnishing the  information contained in this Form is also
thereby furnishing the information to  the Commission pursuant to Rule 12G3-2(b) under
the Securities Exchange Act of  1934.
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|Yes[]     No
      [X]
|----------------------



|If Yes is marked,
indicate below the file number assigned to the registrant in connection with Rule
12g3-2(b): 82- ________.
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|The attached material is being furnished to the
Securities and Exchange  Commission pursuant to Rule 13a-16 and Form 6-K under the
Securities Exchange  Act of 1934, as amended. This report contains Tenariss press
release announcing  that Siderca, its operating subsidiary listed on the Buenos Aires
Stock  Exchange, has published its 2002 annual results
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|SIGNATURE
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|Pursuant to the requirements of the Securities
Exchange Act of 1934, the  Registrant has duly caused this report to be signed on its
behalf by the  undersigned, thereunto duly authorized.
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|Date: March 7, 2003
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|Tenaris, S.A.
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|By: /s/ Cecilia Bilesio                     
|--------------------------------------------
|Cecilia Bilesio 
        Corporate Secretary



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