|Gerardo Varela  Tenaris  1-888 300 5432
 www.tenaris.com
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|Tenaris Announces Resumption of its Acquisition of the
      
      Remaining Minority Interests in Siderca
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|Luxembourg, April 24, 2003. Tenaris S.A. (NYSE,
Buenos Aires and Mexico: TS; MTA Italy: TEN), announced today  that it has resumed its
acquisition of the remaining minority interests in Siderca S.A.I.C. (Siderca) following
the resolution of the condition that caused the delay previously notified on April 10,
2003.
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|In accordance with Argentine law, Tenaris is
unilaterally acquiring for cash all  outstanding Siderca shares not held by Tenaris or
its affiliates, including  Siderca shares underlying Siderca ADSs for a purchase price of:
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| |  |  | six
Argentine pesos (ARP6.00) per Siderca share; and
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| |  |  | sixty
Argentine pesos (ARP60.00) per Siderca ADS.
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|The purchase price for the Siderca shares is
being deposited today at BBVA Banco  Frances S.A., Tenariss payment agent in Argentina
for this transaction. This  money will be made available to holders of Siderca shares
from today in  accordance with the previously announced procedures. The equivalent in
U.S.  dollars at the free market rate of exchange of the purchase price for the shares
underlying Siderca ADSs is also being deposited today into the account of JP  Morgan
Chase Bank, the depositary agent for Sidercas ADSs.
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|This communication does not constitute an offer
or solicitation for the sale,  purchase or acquisition of securities in any jurisdiction.
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|Tenaris is a leading global manufacturer of
seamless steel pipe products and provider of pipe handling, stocking and distribution
services to the oil and gas, energy and mechanical industries and a leading regional
supplier of welded steel pipes for gas pipelines in South America. Organized in
Luxembourg, it has pipe manufacturing facilities in Argentina, Brazil, Canada, Italy,
Japan, Mexico and Venezuela and a network of customer service centers present in over 20
countries worldwide.
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