FORM 6 - K


                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                        Report of Foreign Private Issuer
                    Pursuant to Rule 13a - 16 or 15d - 16 of
                       the Securities Exchange Act of 1934


                              As of August 7, 2006


                                  TENARIS, S.A.
                 (Translation of Registrant's name into English)


                                  TENARIS, S.A.
                           46a, Avenue John F. Kennedy
                                L-1855 Luxembourg
                    (Address of principal executive offices)


     Indicate by check mark whether the registrant files or will file annual
                     reports under cover Form 20-F or 40-F.

                           Form 20-F__X__  Form 40-F

   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.

                               Yes____         No__X__


       If "Yes" is marked, indicate below the file number assigned to the
             registrant in connection with Rule 12g3-2(b): 82- . -




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' Consolidated Condensed
Interim Financial Statements as of June 30, 2006.



                                  TENARIS S.A.



               CONSOLIDATED CONDENSED INTERIM FINANCIAL STATEMENTS


                                  JUNE 30, 2006











46a, Avenue John F. Kennedy - 2nd Floor.
L - 1855 Luxembourg




Tenaris S.A. Consolidated Condensed Interim Financial Statements for the
six-month period ended June 30, 2006
--------------------------------------------------------------------------------


                                                                     
CONSOLIDATED CONDENSED INTERIM INCOME STATEMENT

(all amounts in thousands of U.S.               Three-month period ended   Six-month period ended
dollars, unless otherwise stated)                        June 30,                  June 30,
                                                --------------------------------------------------
                                         Notes     2006         2005         2006         2005
                                                --------------------------------------------------
                                                                    (Unaudited)
Net sales                                  2     1,962,265    1,744,311    3,745,417    3,197,238
Cost of sales                              3    (1,019,036)  (1,043,774)  (1,991,528)  (1,908,902)
                                                --------------------------------------------------
Gross profit                                       943,229      700,537    1,753,889    1,288,336
Selling, general and administrative
 expenses                                  4      (248,492)    (212,510)    (466,376)    (397,593)
Other operating income (expenses), net              (1,939)       2,602        6,191        5,569
                                                --------------------------------------------------
Operating income                                   692,798      490,629    1,293,704      896,312
Financial income (expenses), net           5         4,065      (42,643)      14,661      (84,450)
                                                --------------------------------------------------
Income before equity in earnings of
 associated companies and income tax               696,863      447,986    1,308,365      811,862
Equity in earnings of associated
 companies                                          25,551       38,279       47,072       68,442
                                                --------------------------------------------------
Income before income tax                           722,414      486,265    1,355,437      880,304
Income tax                                        (226,650)    (144,645)    (417,983)    (258,714)
                                                --------------------------------------------------
Income for the period                              495,764      341,620      937,454      621,590

Attributable to:
Equity holders of the Company                      471,771      313,456      891,459      577,690
Minority interest                                   23,993       28,164       45,995       43,900
                                                --------------------------------------------------
                                                   495,764      341,620      937,454      621,590
                                                --------------------------------------------------


Earnings per share attributable to the
 equity holders of the Company during
 the period
Weighted average number of ordinary
 shares in issue (thousands)                     1,180,537    1,180,537    1,180,537    1,180,537
Earnings per share (U.S. dollars per
 share)                                               0.40         0.27         0.76         0.49
Earnings per ADS (U.S. dollars per ADS)               0.80         0.53         1.51         0.98


The ratio of ordinary shares per American Depositary Shares (ADSs) was changed
from a ratio of one ADS equal to ten ordinary shares to a new ratio of one ADS
equal to two ordinary shares. The implementation date for this change was April
26, 2006, for shareholders of record at April 17, 2006. Earnings per ADS
reflected above are adjusted for this change in the conversion ratio.


The accompanying notes are an integral part of these consolidated condensed
interim financial statements. The Report of the Independent Registered Public
Accounting Firm on these consolidated condensed interim financial statements is
issued as a separate document. These consolidated condensed interim financial
statements should be read in conjunction with our audited Consolidated Financial
Statements and notes for the fiscal year ended December 31, 2005.





Tenaris S.A. Consolidated Condensed Interim Financial Statements for the
six-month period ended June 30, 2006
--------------------------------------------------------------------------------


                                                            
CONSOLIDATED CONDENSED INTERIM BALANCE SHEET

(all amounts in thousands of U.S. dollars)     At June 30, 2006     At December 31, 2005
                                            ---------------------- ----------------------
                                      Notes      (Unaudited)
ASSETS
Non-current assets
  Property, plant and equipment, net    6    2,319,381              2,230,038
  Intangible assets, net                6      164,993                159,099
  Investments in associated companies          355,652                257,234
  Other investments                             25,711                 25,647
  Deferred tax assets                          213,715                194,874
  Receivables                                   27,706  3,107,158      65,852  2,932,744
                                            -----------            -----------

Current assets
  Inventories                                1,550,704              1,376,113
  Receivables and prepayments                  182,332                143,282
  Current tax assets                           127,163                102,455
  Trade receivables                          1,458,265              1,324,171
  Other investments                            296,437                119,907
  Cash and cash equivalents                    776,146  4,391,047     707,356  3,773,284
                                            ---------------------- ----------------------
Total assets                                            7,498,205              6,706,028
                                                       ===========            ===========

EQUITY
Capital and reserves attributable to
 the Company's equity holders
  Share capital                              1,180,537              1,180,537
  Legal reserves                               118,054                118,054
  Share premium                                609,733                609,733
  Currency translation adjustments             (62,218)               (59,743)
  Other reserves                                29,331                  2,718
  Retained earnings                          2,343,729  4,219,166   1,656,503  3,507,802
                                            -----------            -----------
Minority interest                                         304,525                268,071
                                                       -----------             ----------
Total equity                                            4,523,691              3,775,873
                                                       -----------             ----------

LIABILITIES
Non-current liabilities
  Borrowings                                   584,962                678,112
  Deferred tax liabilities                     354,716                353,395
  Other liabilities                            159,661                154,378
  Provisions                                    48,464                 43,964
  Trade payables                                   703  1,148,506       1,205  1,231,054
                                            -----------            -----------

Current liabilities
  Borrowings                                   405,389                332,180
  Current tax liabilities                      345,605                452,534
  Other liabilities                            178,955                138,875
  Provisions                                    37,976                 36,945
  Customer advances                             96,753                113,243
  Trade payables                               761,330  1,826,008     625,324  1,699,101
                                            ---------------------- ----------------------

Total liabilities                                       2,974,514              2,930,155
                                                       ===========            ===========

Total equity and liabilities                            7,498,205              6,706,028
                                                       ===========            ===========


Contingencies, commitments and restrictions to the distribution of profits are
disclosed in Note 8.

The accompanying notes are an integral part of these consolidated condensed
interim financial statements. The Report of the Independent Registered Public
Accounting Firm on these consolidated condensed interim financial statements is
issued as a separate document. These consolidated condensed interim financial
statements should be read in conjunction with our audited Consolidated Financial
Statements and notes for the fiscal year ended December 31, 2005.




Tenaris S.A. Consolidated Condensed Interim Financial Statements for the
six-month period ended June 30, 2006
--------------------------------------------------------------------------------


                                                                                     
CONSOLIDATED CONDENSED INTERIM STATEMENT OF CHANGES IN EQUITY
(all amounts in thousands of U.S. dollars)
                                       ------------------------------------------------------------------------------------
                                                Attributable to equity holders of the Company
                                       ---------------------------------------------------------------
                                                                                Currency    Retained
                                          Share     Legal    Share    Other    translation  Earnings   Minority
                                         Capital  Reserves  Premium  Reserves  adjustment      (*)     Interest    Total
                                       ------------------------------------------------------------------------------------
                                                                                                                (Unaudited)
Balance at January 1, 2006              1,180,537  118,054  609,733     2,718     (59,743)  1,656,503   268,071  3,775,873
                                       ------------------------------------------------------------------------------------

Currency translation differences                -        -        -         -      (2,475)          -    16,131     13,656
Change in equity reserves (see Notes 1
 and 9)                                         -        -        -    26,613           -           -         -     26,613
Acquisition of minority interest                -        -        -         -           -           -    (9,671)    (9,671)
Dividends paid in cash                          -        -        -         -           -    (204,233)  (16,001)  (220,234)
Income for the period                           -        -        -         -           -     891,459    45,995    937,454

                                       ------------------------------------------------------------------------------------
Balance at June 30, 2006                1,180,537  118,054  609,733    29,331     (62,218)  2,343,729   304,525  4,523,691
                                       ------------------------------------------------------------------------------------
                                       ------------------------------------------------------------------------------------
                                                Attributable to equity holders of the Company
                                       ---------------------------------------------------------------
                                                                                Currency
                                          Share     Legal    Share    Other    translation  Retained   Minority
                                         Capital  Reserves  Premium  Reserves  adjustment   Earnings   Interest    Total
                                       ------------------------------------------------------------------------------------
                                                                                                                (Unaudited)
Balance at January 1, 2005              1,180,537  118,054  609,733        82     (30,020)    617,538   165,271  2,661,195
Effect of adopting IFRS 3 (see Note 1)          -        -        -         -           -     110,775         -    110,775
                                       ------------------------------------------------------------------------------------

Adjusted balance at January 1, 2005     1,180,537  118,054  609,733        82     (30,020)    728,313   165,271  2,771,970
Currency translation differences                -        -        -         -     (21,602)          -    10,453    (11,149)
Acquisition and increase of minority
 interest                                       -        -        -         -           -           -       986        986
Dividends paid in cash                          -        -        -       (82)          -    (199,429)   (2,730)  (202,241)
Income for the period                           -        -        -         -           -     577,690    43,900    621,590

                                       ------------------------------------------------------------------------------------
Balance at June 30, 2005                1,180,537  118,054  609,733         -     (51,622)  1,106,574   217,880  3,181,156
                                       ------------------------------------------------------------------------------------

(*) Retained Earnings calculated in accordance with Luxembourg Law are disclosed
in Note 8 (ii).

The accompanying notes are an integral part of these consolidated condensed
interim financial statements. The Report of the Independent Registered Public
Accounting Firm on these consolidated condensed interim financial statements is
issued as a separate document. These consolidated condensed interim financial
statements should be read in conjunction with our audited Consolidated Financial
Statements and notes for the fiscal year ended December 31, 2005.




Tenaris S.A. Consolidated Condensed Interim Financial Statements for the
six-month period ended June 30, 2006
--------------------------------------------------------------------------------

CONSOLIDATED CONDENSED INTERIM CASH FLOW STATEMENT

                                                              Six-month period
                                                                ended June 30,
                                                            --------------------
(all amounts in thousands of U.S. dollars)                     2006       2005
                                                            --------------------
                                                                 (Unaudited)

Cash flows from operating activities
Income for the period                                        937,454    621,590
Adjustments for:
Depreciation and amortization                                109,790    103,743
Income tax accruals less payments                            (90,160)    35,756
Equity in earnings of associated companies                   (47,072)   (68,442)
Interest accruals less payments, net                          (1,464)     6,210
Income from disposal of Investment                            (6,933)         -
Changes in provisions                                          5,531     (2,636)
Proceeds from Fintecna arbitration award net of BHP
 settlement                                                        -     66,594
Changes in working capital                                  (219,541)  (334,106)
Other, including currency translation adjustment              26,472     16,979
                                                            --------------------
Net cash provided by operating activities                    714,077    445,688
                                                            ====================

Cash flows from investing activities
Capital expenditures                                        (169,101)  (131,634)
Acquisitions of subsidiaries (see Note 9)                    (39,110)   (47,930)
Proceeds from disposal of property, plant and equipment and
 intangible assets                                             3,388      2,890
Dividends and distributions received from associated
 companies                                                         -     41,118
Changes in restricted bank deposits                              627      9,634
Reimbursement from trust funds                                     -    119,666
Investments in short terms securities                       (176,530)         -
                                                            --------------------
Net cash used in investing activities                       (380,726)    (6,256)
                                                            ====================

Cash flows from financing activities
Dividends paid                                              (204,233)  (199,511)
Dividends paid to minority interest in subsidiaries          (16,001)    (2,730)
Proceeds from borrowings                                     234,563    645,763
Repayments of borrowings                                    (270,159)  (734,247)
                                                            --------------------
Net cash used in financing activities                       (255,830)  (290,725)
                                                            ====================
Increase in cash and cash equivalents                         77,521    148,707

Movement in cash and cash equivalents
At beginning of the period                                   680,591    293,824
Effect of exchange rate changes                               (5,853)   (12,247)
Increase in cash and cash equivalents                         77,521    148,707
                                                            --------------------
At June 30,                                                  752,259    430,284
                                                            ====================

                                                            --------------------
Cash and cash equivalents                                        At June 30,
                                                            --------------------
                                                              2006        2005
Cash and bank deposits                                       776,146    450,586
Bank overdrafts                                              (22,466)   (16,436)
Restricted bank deposits                                      (1,421)    (3,866)
                                                            --------------------
                                                             752,259    430,284
                                                            ====================

The accompanying notes are an integral part of these consolidated condensed
interim financial statements. The Report of the Independent Registered Public
Accounting Firm on these consolidated condensed interim financial statements is
issued as a separate document. These consolidated condensed interim financial
statements should be read in conjunction with our audited Consolidated Financial
Statements and notes for the fiscal year ended December 31, 2005.




Tenaris S.A. Consolidated Condensed Interim Financial Statements for the
six-month period ended June 30, 2006
--------------------------------------------------------------------------------






NOTES TO THE CONSOLIDATED CONDENSED INTERIM FINANCIAL STATEMENTS



       Index to the notes to the consolidated condensed interim financial
                                   statements

     1    General information and basis of presentation

     2    Segment information

     3    Cost of sales

     4    Selling, general and administrative expenses

     5    Financial income (expenses), net

     6    Property, plant and equipment and Intangible assets, net

     7    Dividends per share

     8    Contingencies, commitments and restrictions to the distribution of
          profits

     9    Business acquisitions, incorporation of subsidiaries and other
          significant events

    10    Related party disclosures

                                       2



Tenaris S.A. Consolidated Condensed Interim Financial Statements for the
six-month period ended June 30, 2006
--------------------------------------------------------------------------------



NOTES TO THE CONSOLIDATED CONDENSED INTERIM FINANCIAL STATEMENTS
(In the notes all amounts are shown in U.S. dollars, unless otherwise stated)

1    General information and basis of presentation

Tenaris S.A. (the "Company" or  "Tenaris"),  a Luxembourg  corporation  (societe
anonyme holding), was incorporated on December 17, 2001 as a holding company for
investments in steel pipe manufacturing and distribution companies.  The Company
consolidates  its  subsidiary  companies,  as detailed in Note 31 to the audited
Consolidated  Financial  Statements  for the year ended  December 31, 2005,  and
modified  as  discussed  in  Note  9 to  these  consolidated  condensed  interim
financial statements.

These consolidated  condensed interim financial statements have been prepared in
accordance with IAS 34, "Interim Financial  Reporting".  The accounting policies
used in the  preparation  of  these  consolidated  condensed  interim  financial
statements are consistent with those used in the audited consolidated  financial
statements for the year ended December 31, 2005.  These  consolidated  condensed
interim  financial  statements  should be read in  conjunction  with the audited
Consolidated  Financial  Statements for the year ended December 31, 2005,  which
have  been  prepared  in  accordance  with  International   Financial  Reporting
Standards ("IFRS").

The  preparation  of  consolidated  condensed  interim  financial  statements in
conformity with IFRS requires  management to make certain  accounting  estimates
and assumptions that might affect the reported amounts of assets and liabilities
and the disclosure of contingent  assets and liabilities as of the balance sheet
dates,  and also the reported  amounts of revenues and expenses for the reported
periods. Actual results may differ from these estimates.

Material  intercompany  transactions and balances  between Tenaris  subsidiaries
have been eliminated in consolidation.  However, some financial gains and losses
do arise from intercompany  transactions  because certain subsidiaries use their
respective  local  currencies  as  their  functional   currency  for  accounting
purposes.  Such  gains  and  losses  are  included  in the  consolidated  income
statement under Financial income (expenses), net.

The Company applies hedge accounting  treatment for certain qualifying financial
instruments.  These  transactions  are  classified  as cash flow hedges  (mainly
currency forward contracts on highly probable forecast transactions and interest
rate swaps).  The effective  portion of the fair value of  derivatives  that are
designated  and qualify as cash flow  hedges is  recognized  in equity.  Amounts
accumulated  in equity are charged in the income  statement  in the periods when
the  hedged  item  affects  profit  or loss.  The gain or loss  relating  to the
ineffective portion is recognized in the income statement. The fair value of the
Company's derivative financial  instruments (asset or liability) is reflected on
the Balance Sheet.

For  transactions  designated and qualifying for hedge  accounting,  the Company
documents at the time of designation of the transaction the relationship between
hedging instruments and hedged items, as well as its risk management objectives.
The Company also  documents  its  assessment  at hedge  designation  and at each
period end of whether the derivatives that are used in hedging  transactions are
expected to be effective in offsetting changes in cash flows of hedged items. At
June 30, 2006, the effective  portion of designated  cash flow hedges amounts to
$1.8 million and is included in Other reserves in equity.

Upon the adoption of IFRS 3, which was adopted together with the revised IAS 38,
"Intangible Assets", and IAS 36, "Impairment of Assets",  previously accumulated
negative  goodwill is  required  to be  derecognized  through an  adjustment  to
retained  earnings.  The  derecognition  of  negative  goodwill  in this  manner
resulted  in an  increase  of $110.8  million  in the  beginning  balance of the
Company's equity at January 1, 2005.

These  consolidated  condensed  interim  financial  statements were approved for
issue by the Tenaris Board of Directors on August 3, 2006.

                                       3



Tenaris S.A. Consolidated Condensed Interim Financial Statements for the
six-month period ended June 30, 2006
--------------------------------------------------------------------------------



2    Segment information

Primary reporting format: business segments


                                                                   
                                     -----------------------------------------------------------
(all amounts in thousands of U.S.                   Welded &
 dollars)                                        Other Metallic
                                      Seamless      Products      Energy     Other      Total
                                     -----------------------------------------------------------
Six-month period ended June 30, 2006                            (Unaudited)

Net sales                             3,077,876        244,876    283,818   138,847   3,745,417
Cost of sales                        (1,442,438)      (174,818)  (273,516) (100,756) (1,991,528)
                                     -----------------------------------------------------------
Gross profit                          1,635,438         70,058     10,302    38,091   1,753,889

Depreciation and amortization            93,421          9,678        985     5,706     109,790

Six-month period ended June 30, 2005
Net sales                             2,413,116        415,866    256,193   112,063   3,197,238
Cost of sales                        (1,320,512)      (273,314)  (248,406)  (66,670) (1,908,902)
                                     -----------------------------------------------------------
Gross profit                          1,092,604        142,552      7,787    45,393   1,288,336

Depreciation and amortization            88,851          7,356      1,570     5,966     103,743




                                                            
Secondary reporting format: geographical segments

                                     --------------------------------------------------------
(all amounts in thousands of U.S.                                Middle  Far East
 dollars)                              South             North    East &     &
                                      America  Europe   America   Africa  Oceania    Total
                                     --------------------------------------------------------
Six-month period ended June 30, 2006                        (Unaudited)
Net sales                             701,398  946,622  919,647  828,315  349,435  3,745,417
Depreciation and amortization          45,233   30,758   30,469      387    2,943    109,790

Six-month period ended June 30, 2005
Net sales                             884,884  789,659  879,846  360,206  282,643  3,197,238
Depreciation and amortization          41,578   35,471   23,472       30    3,192    103,743

Allocation of net sales to geographical segments is based on customer location.
Allocation of depreciation and amortization is based on the geographical
location of the underlying assets.


                                       4



Tenaris S.A. Consolidated Condensed Interim Financial Statements for the
six-month period ended June 30, 2006
--------------------------------------------------------------------------------

3    Cost of sales

                                                         Six-month period ended
                                                                June 30,
                                                        ------------------------
(all amounts in thousands of U.S. dollars)                 2006         2005
                                                        ------------------------
                                                              (Unaudited)
Inventories at the beginning of the period               1,376,113    1,269,470

Plus: Charges of the period
Raw materials, energy, consumables and other             1,588,691    1,513,516
Services and fees                                          177,990      153,656
Labor cost                                                 227,144      201,826
Depreciation of property, plant and equipment               95,175       89,219
Amortization of intangible assets                            1,508        3,541
Maintenance expenses                                        55,202       50,039
Provisions for contingencies                                     -        1,200
Allowance for obsolescence                                  (2,395)       1,202
Taxes                                                        1,959        1,477
Other                                                       20,845       13,387
                                                        ------------------------
                                                         3,542,232    3,298,533

Less: Inventories at the end of the period              (1,550,704)  (1,389,631)
                                                        ------------------------
                                                         1,991,528    1,908,902
                                                        ========================

4    Selling, general and administrative expenses

                                                         Six-month period ended
                                                                June 30,
                                                        ------------------------
(all amounts in thousands of U.S. dollars)                 2006         2005
                                                        ------------------------
                                                              (Unaudited)
Services and fees                                           56,380       63,130
Labor cost                                                 124,272       97,324
Depreciation of property, plant and equipment                4,400        5,014
Amortization of intangible assets                            8,707        5,969
Commissions, freight and other selling expenses            175,385      144,549
Provisions for contingencies                                 5,587        5,439
Allowances for doubtful accounts                             2,288        6,936
Taxes                                                       50,115       40,189
Other                                                       39,242       29,043
                                                        ------------------------
                                                           466,376      397,593
                                                        ========================

5    Financial income (expenses), net

                                                         Six-month period ended
                                                                June 30,
                                                        ------------------------
(all amounts in thousands of U.S. dollars)                 2006         2005
                                                        ------------------------
                                                              (Unaudited)
Interest expense                                           (26,502)     (29,746)
Interest income                                             25,868        8,781
Net foreign exchange transaction losses and changes in
 fair value of derivative instruments                       15,007      (66,564)
Other                                                          288        3,079
                                                        ------------------------
                                                            14,661      (84,450)
                                                        ========================


                                       5



Tenaris S.A. Consolidated Condensed Interim Financial Statements for the
six-month period ended June 30, 2006
--------------------------------------------------------------------------------


6    Property, plant and equipment and Intangible assets, net

                                            Net Property, Plant   Net Intangible
                                               and Equipment           Assets
                                            -------------------   --------------
(all amounts in thousands of U.S. dollars)      (Unaudited)         (Unaudited)
Six-month period ended June 30, 2006
Opening net book amount                              2,230,038          159,099
Currency translation differences                        26,863              662
Transfers                                                (125)              125
Additions                                              154,847           14,254
Disposals                                              (15,559)             (95)
Increase due to business acquisition                    22,892            1,163
Depreciation / Amortization charge                     (99,575)         (10,215)

                                            -------------------   --------------
At June 30, 2006                                     2,319,381          164,993
                                            ===================   ==============


7    Dividends per share

The  shareholders'  meeting  held on June 7,  2006  approved  the  payment  of a
dividend  in the  amount  of $0.30  per  share or  approximately  $354  million,
corresponding  to operating  results for 2005.  This amount included the interim
dividend  paid  in  November,  2005,  in the  amount  of  $0.127  per  share  or
approximately  $149.9  million.  Tenaris paid the balance of the annual dividend
amounting to  approximately  $204.2  million  corresponding  to $0.173 per share
during 2006. During 2005 Tenaris paid $199.5 million corresponding to $0.169 per
share.

8    Contingencies, commitments and restrictions to the distribution of profits

This note should be read in  conjunction  with Note 26 to the Company's  audited
Consolidated  Financial  Statements  for  the  year  ended  December  31,  2005.
Significant  changes or events since the date of such  financial  statements are
the following:

(i)  Commitments

     (a)  In August 2001,  Dalmine Energie S.p.A.  ("Dalmine  Energie")  entered
          into a ten-year  contract ending October 1, 2011 with Eni S.p.A. Gas &
          Power  Division  ("Eni") for the  purchase of natural gas with certain
          take-or-pay conditions.  The outstanding value of these commitments at
          June 30,  2006  amounts to  approximately  EUR 724.5  million  ($921.0
          million).

     (b)  Under the Gas Release Program enacted by Eni, in August 2004,  Dalmine
          Energie  increased  its  supply of  natural  gas for the  period  from
          October 1, 2004 to  September  30,  2008.  The gas  purchase  and sale
          agreements  entered  into  with  Eni  contain  customary   take-or-pay
          conditions.  The  additional gas supply  mentioned  above is valued at
          approximately  EUR 221.8  million  ($281.9  million),  based on prices
          prevailing  at June  2006.  Dalmine  Energie  has  also  obtained  the
          necessary  capacity  on  the  interconnection  infrastructure  at  the
          Italian  border to  transport  the natural gas to Italy for the supply
          period.

     (c)  Dalmine  Energie has entered into  arrangements  and expects to obtain
          additional gas transportation capacity on the Trans Austria Gasleitung
          GmbH ("TAG")  pipeline,  which is presently under  construction.  This
          capacity will allow Dalmine  Energie to import an incremental  1,176.5
          million  cubic  meters  of  natural  gas  per  year.   The  additional
          transportation capacity, which is subject to "ship or pay" provisions,
          will  be  available  on a firm  basis  on the TAG  pipeline  beginning
          October 2008 and through September 2028.

          The  expected  annual  value  of  this  "ship  or pay"  commitment  is
          approximately  EUR  5.0  million  per  year.   Tenaris  provided  bank
          guarantees  in the  amount of EUR 15.1  million  in support of Dalmine
          Energie.  The  value  of  the  bank  guarantees   corresponds  to  the
          termination  penalties  that  would  be due to  TAG  in the  event  of
          termination due to shipper's default.

                                       6



Tenaris S.A. Consolidated Condensed Interim Financial Statements for the
six-month period ended June 30, 2006
--------------------------------------------------------------------------------

8    Contingencies,  commitments and restrictions to the distribution of profits
     (Cont'd)

(ii) Restrictions to the distribution of profits and payment of dividends

As of June 30, 2006, shareholders' equity as defined under Luxembourg law and
regulations consisted of the following:

(all amounts in thousands of U.S. dollars)                           (unaudited)
Share capital                                                         1,180,537
Legal reserve                                                           118,054
Share premium                                                           609,733
Retained earnings  including net income for the six month period
 ended June 30, 2006                                                  1,102,589
                                                                     -----------
Total shareholders equity in accordance with Luxembourg law           3,010,913
                                                                     ===========

At  least  5% of the net  income  per  year as  calculated  in  accordance  with
Luxembourg  law and  regulations  must be  allocated  to the creation of a legal
reserve equivalent to 10% of share capital. As of June 30, 2006, this reserve is
fully allocated and additional allocations to the reserve are not required under
Luxembourg law. Dividends may not be paid from this reserve.

Tenaris may pay  dividends to the extent,  among other  conditions,  that it has
distributable retained earnings calculated in accordance with Luxembourg law and
regulations.

At June 30, 2006,  Tenaris's  retained  earnings  under  Luxembourg law totalled
$1,102.6 million, as detailed below.

(all amounts in thousands of U.S. dollars)                           (unaudited)
Retained earnings at December 31, 2005 under Luxembourg law           1,171,738
Dividends received                                                      130,000
Other income and expenses for the six-month period ended June 30,
 2006                                                                     5,084
Dividends paid                                                         (204,233)
                                                                     -----------
Retained earnings at June 30, 2006 under Luxembourg law               1,102,589
                                                                     ===========

9    Business acquisitions,  incorporation of subsidiaries and other significant
     events

(a)  Agreement to acquire Maverick Tube Corporation ("Maverick")

     On June 12, 2006, Tenaris entered into a merger agreement (the "agreement")
     to acquire Maverick,  pursuant to which Maverick will merge with and into a
     wholly owned  subsidiary of Tenaris.  With operations in the United States,
     Canada and  Colombia,  Maverick  is a leading  North  American  producer of
     welded oil country  tubular goods  (OCTG),  line pipe and coiled tubing for
     use in oil and  natural  gas  wells,  and also  produces  welded  pipes for
     electrical conduits. Maverick has a combined annual capacity of two million
     short tons of steel  pipes with a size  range from  one-quarter  inch to 16
     inches, and approximately  4,650 employees.  In 2005, reported net revenues
     of approximately  $1.8 billion,  of which 82% were from its energy products
     division. The transaction remains subject to regulatory approvals, majority
     approval of Maverick's  shareholders  and other customary  conditions.  The
     transaction is valued at $3,185 million, including Maverick's net debt. The
     value of the  transaction  is based on the  assumption  that the holders of
     Maverick's  convertible  notes elect to exercise  their  conversion  rights
     pursuant to their applicable terms and conditions.

     Tenaris  expects to finance the Maverick  acquisition  mainly through debt.
     BNP Paribas  Securities  Corp.  and  Citigroup  Global  Markets  Inc.  have
     provided to Tenaris commitments for several syndicated  five-year term loan
     facilities  in an  aggregate  principal  amount of up to $2.7  billion.  If
     Tenaris enters into these facilities, the relevant loan documentation would
     contain  customary terms and covenants that may limit the Company's ability
     to, among other things, pay dividends or make other restricted  payments in
     excess of amounts  to be agreed,  make  capital  expenditures  in excess of
     specified   thresholds,   dispose  of  material  assets  or  amend  certain
     significant  agreements.  The loan  documentation  would also  require  the
     Company and its subsidiaries to meet certain  financial  covenants,  ratios
     and other tests.


                                       7



Tenaris S.A. Consolidated Condensed Interim Financial Statements for the
six-month period ended June 30, 2006
--------------------------------------------------------------------------------



9    Business acquisitions,  incorporation of subsidiaries and other significant
     events (Cont'd)

(a)  Agreement to acquire Maverick Tube Corporation ("Maverick")(Cont'd)

     This  agreement  could be terminated in certain  circumstances  at any time
     upon the mutual written consent of the parties with certain exceptions.  In
     the event that Maverick's board accepts an unsolicited  superior  proposal,
     there would be a termination  fee of $72.5 million plus up to $5 million of
     out-of-pocket expenses that Maverick would pay to Tenaris. If the agreement
     is terminated because of failure to obtain required  regulatory  approvals,
     Tenaris would pay Maverick a termination fee of $30 million.

(b)  Investment in Ternium S.A. ("Ternium")

     On September 9, 2005,  the Company  exchanged its 21.2% equity  interest in
     Consorcio  Siderurgia  Amazonia  Ltd.  ("Amazonia")  and its  24.4%  equity
     interest  in  Ylopa  Servicos  de  Consultadoria   Ltda.   ("Ylopa"),   for
     209,460,856  shares in Ternium,  the company into which San Faustin N.V. (a
     Netherlands  Antilles  corporation  and  the  controlling   shareholder  of
     Tenaris)  consolidated  its Latin American  holdings in flat and long steel
     producers Siderar S.A.I.C. ("Siderar"),  Sidor C.A. ("Sidor") and Hylsamex,
     S.A de C.V.  As a result of the  exchange,  which was  carried out based on
     fair values as determined by an internationally  recognized investment bank
     engaged for this purpose, Tenaris obtained an initial ownership interest of
     approximately 17.9% in Ternium.

     Subsequently, on October 27, 2005, Usinas Siderurgicas de Minas Gerais S.A.
     reached an agreement  with  Ternium to exchange its  interests in Amazonia,
     Ylopa and Siderar,  plus additional  consideration of approximately  $114.1
     million provided as a convertible loan, for an equity stake in Ternium.  As
     a  consequence  of the  additional  shares  issued under this  transaction,
     Tenaris'  ownership  stake was  reduced to 15.0% of  Ternium's  outstanding
     common stock at December 31, 2005. The effect of this transaction  resulted
     in an increase of the Company's  proportional ownership in Ternium's equity
     of approximately  $2.7 million,  which Tenaris recognized in Other Reserves
     in equity.

     In addition,  in August 2005 Tenaris  extended to Ternium two  subordinated
     convertible  loans  consisting of principal  amount of $39.7  million.  The
     principal  amount  of these  loans at the date  issue  corresponded  to the
     amount of certain  distributions  received from Amazonia  during the second
     and third quarters of 2005 in connection  with Ternium's  participation  in
     Amazonia's  financial debt  restructuring in 2003. At the date of Ternium's
     initial public  offering  ("IPO"),  the loans totaled  approximately  $40.5
     million, including accrued interest.

     On February  6, 2006,  Ternium  completed  its IPO,  issuing an  additional
     248,447,200  shares  (equivalent to 24,844,720 ADS) at a price of $2.00 per
     share, or $20.00 per ADS. Tenaris received an additional  20,252,338 shares
     upon the mandatory  conversion of its loans to Ternium.  In addition to the
     shares  issued to  Tenaris,  Ternium  issued  shares to other  shareholders
     corresponding to their mandatory  convertible  loans. On February 23, 2006,
     the underwriters of Ternium's IPO exercised an  overallotment  option under
     which  Ternium  issued  an  additional  37,267,080  shares  (equivalent  to
     3,726,708  ADS). As a result of the IPO and the conversion of loans,  as of
     February 6, 2006,  Tenaris'  ownership stake in Ternium amounted to 11.46%.
     The effect of these transactions  resulted in an additional increase of the
     Company's proportional ownership in Ternium's equity of approximately $27.7
     million, which Tenaris recognized in Other Reserves in equity.

     At June 30, 2006,  the closing price of Ternium shares as quoted on the New
     York Stock Exchange was $24.17 per ADS, giving  Tenaris'  ownership stake a
     market value of approximately $555 million.  At June 30, 2006, the carrying
     value of  Tenaris's  ownership  stake in  Ternium  was  approximately  $353
     million.

                                       8



Tenaris S.A. Consolidated Condensed Interim Financial Statements for the
six-month period ended June 30, 2006
--------------------------------------------------------------------------------

9    Business acquisitions,  incorporation of subsidiaries and other significant
     events (Cont'd)

(c)  Acquisition of Welded Pipe Business in Argentina

     On January 31,  2006,  Siat S.A., a subsidiary  of Tenaris,  completed  its
     acquisition  of the  welded  pipe  assets and  facilities  located in Villa
     Constitucion,  province  of Santa Fe,  Argentina,  belonging  to  Industria
     Argentina de Acero, S.A. ("Acindar") for $29.1 million. The acquisition was
     approved  by the  Argentine  antitrust  authorities  (Comision  Nacional de
     Defensa de la Competencia). The facilities acquired have an annual capacity
     of  80,000  tons  of  welded  pipes  whose  small  diameter  range  largely
     complements the range of welded pipes that Tenaris produces in Argentina.

     The  acquired  business  did not  materially  contribute  to the  Company's
     revenue and income. The fair value of acquired assets and liabilities were:

                                                          Six-month period ended
                                                               June 30, 2006
                                                          ----------------------
(all amounts in thousands of U.S. dollars)                      (Unaudited)
                                                          ----------------------
Other assets and liabilities (net)                                        5,033
Property, plant and equipment                                            22,892
Goodwill                                                                  1,163
                                                          ----------------------
Net assets acquired                                                      29,088
                                                          ----------------------

(d)  Minority Interest

     During the six month  period  ended  June 30,  2006,  additional  shares of
     Silcotub  and  Dalmine  were  acquired  from  minority   shareholders   for
     approximately $9.7 million.

10   Related party disclosures

The  Company  is  controlled  by  San  Faustin  N.V.,  a  Netherlands   Antilles
corporation,  which owns  60.45% of the  Company's  outstanding  shares,  either
directly or through its wholly-owned  subsidiary I.I.I.  Industrial  Investments
Inc., a Cayman  Islands  corporation.  San Faustin N.V. is controlled by Rocca &
Partners, a British Virgin Islands corporation.

Transactions  and balances  disclosed as with  "Associated"  companies are those
with  companies in which  Tenaris  owns 20% to 50% of the voting  rights or over
which Tenaris exerts significant influence in accordance with IFRS, but does not
have  control.  All  other  transactions  with  related  parties  which  are not
Associated and which are not consolidated are disclosed as "Other".

The following transactions were carried out with related parties:

                   (all amounts in thousands of U.S. dollars)
     Six-month period ended June 30, 2006
                                                  Associated (1) Other    Total
(i)  Transactions
     (a) Sales of goods and services
     Sales of goods                                      59,285  27,974  87,259
     Sales of services                                    7,887   1,741   9,628
                                                 -------------------------------
                                                         67,172  29,715  96,887
                                                 ===============================

     (b) Purchases of goods and services
     Purchases of goods                                  41,623  12,384  54,007
     Purchases of services                                2,419  33,545  35,964
                                                 -------------------------------
                                                         44,042  45,929  89,971
                                                 ===============================

                                       9



Tenaris S.A. Consolidated Condensed Interim Financial Statements for the
six-month period ended June 30, 2006
--------------------------------------------------------------------------------

10   Related party disclosures (Cont'd)

     Six-month period ended June 30, 2005
                                                  Associated (2) Other    Total
 (i) Transactions
     (a) Sales of goods and services
     Sales of goods                                      51,322  42,806  94,128
     Sales of services                                    1,541   4,800   6,341
                                                 -------------------------------
                                                         52,863  47,606 100,469
                                                 ===============================


     (b) Purchases of goods and services
     Purchases of goods                                  21,079  21,821  42,900
     Purchases of services                                9,835  25,285  35,120
                                                 -------------------------------
                                                         30,914  47,106  78,020
                                                 ===============================


     At June 30, 2006
                                                   Associated    Other    Total
                                                 -------------------------------
(ii) Period-end balances

     (a) Related to sales/purchases of goods/
     services
     Receivables from related parties                    31,151  22,985  54,136
     Payables to related parties                        (20,045) (9,456)(29,501)
                                                 -------------------------------
                                                         11,106  13,529  24,635
                                                 ===============================

     (b) Other balances
     Receivables                                          2,079       -   2,079

     (c) Financial debt
     Borrowings (4)                                     (56,500)      - (56,500)


     At December 31, 2005
                                                   Associated    Other    Total
                                                 -------------------------------
(ii) Period-end balances

     (a) Related to sales/purchases of goods/
     services
     Receivables from related parties                    30,988  15,228  46,216
     Payables to related parties                        (21,034) (8,413)(29,447)
                                                 -------------------------------
                                                          9,954   6,815  16,769
                                                 ===============================

     (b) Other balances (3)                              42,437       -  42,437

     (c) Financial debt
     Borrowings (4)                                     (54,801)      - (54,801)

(1)  Includes Ternium S.A. and its subsidiaries and Condusid C.A.
(2)  Includes: Condusid, Ylopa, Amazonia and Sidor.
(3)  Includes convertible loan to Ternium S.A. of $40.4 million.
(4)  Convertible loan from Sidor C.A. to Matesi (Materiales Siderurgicos S.A.).


                                                               Carlos Condorelli
                                                         Chief Financial Officer

                                       10



                                    SIGNATURE




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.



Date: August 7, 2006



                                  Tenaris, S.A.



By: /s/ Cecilia Bilesio
-----------------------
Cecilia Bilesio
Corporate Secretary