TENARIS SA | CIK:0001190723 | 3

  • Filed: 4/30/2018
  • Entity registrant name: TENARIS SA (CIK: 0001190723)
  • Generator: Thunderdome
  • SEC filing page: http://www.sec.gov/Archives/edgar/data/1190723/000117184318003182/0001171843-18-003182-index.htm
  • XBRL Instance: http://www.sec.gov/Archives/edgar/data/1190723/000117184318003182/ts-20171231.xml
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    • ifrs-full:DisclosureOfInterestsInSubsidiariesExplanatory

    30
    		 Principal subsidiaries
     
    The following is a list of Tenaris’s principal subsidiaries and its direct and indirect percentage of ownership of each controlled company at
    December 31, 2017.
     
    Company
    Country of Incorporation
    Main activity
    Percentage of ownership at December 31, (*)
         
    2017
    2016
    2015
    ALGOMA TUBES INC.
    Canada
    Manufacturing of seamless steel pipes
    100%
    100%
    100%
    CONFAB INDUSTRIAL S.A. and subsidiaries
    Brazil
    Manufacturing of welded steel pipes and capital goods
    100%
    100%
    100%
    DALMINE S.p.A.
    Italy
    Manufacturing of seamless steel pipes
    100%
    100%
    99%
    HYDRIL COMPANY and subsidiaries (except detailed) (a)
    USA
    Manufacture and marketing of premium connections
    100%
    100%
    100%
    MAVERICK TUBE CORPORATION and subsidiaries
    USA
    Manufacturing of welded steel pipes
    100%
    100%
    100%
    NKKTUBES
    Japan
    Manufacturing of seamless steel pipes
    51%
    51%
    51%
    P.T. SEAMLESS PIPE INDONESIA JAYA
    Indonesia
    Manufacturing of seamless steel products
    89%
    77%
    77%
    PRUDENTIAL STEEL LTD.
    Canada
    Manufacturing of welded steel pipes
    100%
    100%
    100%
    S.C. SILCOTUB S.A.
    Romania
    Manufacturing of seamless steel pipes
    100%
    100%
    100%
    SIAT SOCIEDAD ANONIMA
    Argentina
    Manufacturing of welded and seamless steel pipes
    100%
    100%
    100%
    SIDERCA SOCIEDAD ANONIMA INDUSTRIAL Y COMERCIAL and subsidiaries
    Argentina
    Manufacturing of seamless steel pipes
    100%
    100%
    100%
    TALTA - TRADING E MARKETING SOCIEDADE UNIPESSOAL LDA.
    Portugal
    Holding Company
    100%
    100%
    100%
    TENARIS BAY CITY, INC.
    USA
    Manufacturing of seamless steel pipes
    100%
    100%
    100%
    TENARIS FINANCIAL SERVICES S.A.
    Uruguay
    Financial company
    100%
    100%
    100%
    TENARIS GLOBAL SERVICES (CANADA) INC.
    Canada
    Marketing of steel products
    100%
    100%
    100%
    TENARIS GLOBAL SERVICES (U.S.A.) CORPORATION
    USA
    Marketing of steel products
    100%
    100%
    100%
    TENARIS GLOBAL SERVICES (UK) LTD
    United Kingdom
    Holding company and marketing of steel products
    100%
    100%
    100%
    TENARIS GLOBAL SERVICES S.A. and subsidiaries (except detailed) (b)
    Uruguay
    Holding company and marketing of steel products
    100%
    100%
    100%
    TENARIS INVESTMENTS S.àr.l.
    Luxembourg
    Holding company
    100%
    100%
    100%
    TENARIS INVESTMENTS SWITZERLAND AG and subsidiaries
    Switzerland
    Holding company
    100%
    100%
    100%
    TENARIS CONNECTIONS BV
    Netherlands
    Development, management and licensing of intellectual property
    100%
    100%
    100%
    TENARIS TUBOCARIBE LTDA.
    Colombia
    Manufacturing of welded and seamless steel pipes
    100%
    100%
    100%
    TUBOS DE ACERO DE MEXICO, S.A.
    Mexico
    Manufacturing of seamless steel pipes
    100%
    100%
    100%
     
    (*) All percentages rounded.
     
    (a) Tenaris Investments S.a.r.l. holds
    100%
    of Hydril's subsidiaries shares except for Technical Drilling & Production Services Nigeria. Ltd where it holds
    80
    %
    for
    2017,
    2016
    and
    2015.
    (b) Tenaris holds
    97,5%
    of Tenaris Supply Chain S.A,
    60%
    of Gepnaris S.A. and
    40%
    of Tubular Technical Services and Pipe Coaters, and
    49%
    of Amaja Tubular Services Limited.