EX-8.1 3 d145126dex81.htm EX-8.1 EX-8.1

Exhibit 8.1

Tenaris – List of subsidiaries of Tenaris S.A.

Significant operating subsidiaries

We conduct all our operations through subsidiaries. The following table shows the significant operating subsidiaries of the Company and its direct and indirect ownership in each subsidiary as of December 31, 2015, 2014 and 2013.

 

               Percentage
Ownership

Company

  

Country of
Organization

  

Main Activity

   2015    2014    2013
Algoma Tubes Inc.    Canada    Manufacture of seamless steel pipes    100%    100%    100%
Confab Industrial S.A.    Brazil    Manufacture of welded steel pipes and capital goods    100%    100%    100%
Dalmine S.p.A.    Italy    Manufacture of seamless steel pipes    99%    99%    99%
Exiros B.V.    Netherlands    Procurement of raw materials and other products or services    50%    50%    50%
Hydril Company    U.S.A.    Manufacture and marketing of premium connections    100%    100%    100%
Maverick Tube Corporation    U.S.A.    Manufacture of welded steel pipes    100%    100%    100%
Metalmecánica S.A.    Argentina    Manufacture of sucker rods    100%    100%    100%
NKKTubes K.K.    Japan    Manufacture of seamless steel pipes    51%    51%    51%
PT Seamless Pipe Indonesia Jaya    Indonesia    Manufacture of seamless steel pipes    77%    77%    77%
Prudential Steel ULC    Canada    Manufacture of welded steel pipes    100%    100%    100%
S.C. Silcotub S.A.    Romania    Manufacture of seamless steel pipes    100%    100%    100%
Siat S.A.    Argentina    Manufacture of welded steel pipes    100%    100%    100%
Siderca S.A.I.C.    Argentina    Manufacture of seamless steel pipes    100%    100%    100%
Tenaris Coiled Tubes LLC (and predecessors)    U.S.A.    Manufacture of coiled tubing    100%    100%    100%
Tenaris Connections B.V.    Netherlands    Ownership and licensing of technology    100%    100%    100%
Tenaris Financial Services S.A.    Uruguay    Financial services    100%    100%    100%
Tenaris Global Services S.A.    Uruguay    Holding company and marketing of steel pipes    100%    100%    100%
Tenaris Investments S.àr.l Luxembourg, Zug Branch    Switzerland    Holding company and financial services    100%    100%    100%
Tubos de Acero de México S.A.    Mexico    Manufacture of seamless steel pipes    100%    100%    100%
Tenaris Tubocaribe Ltda.    Colombia    Manufacture of welded and seamless steel pipes    100%    100%    100%