Tenaris Connections Limited

Alejandra Paola Sanmartino

Gaston Mauro Mazzaferro

A threaded connection includes a first pipe having an internal liner and a first pin end on a distal end thereof, the first pin end comprising a first annular seal permanently affixed therein, a second pipe having an internal liner and a second pin end on a distal end thereof, the second pin end comprising a second annular seal permanently affixed therein, a coupling having a first and second box end. The first pin end and the first box end, and the second pin end and the second box end are threadedly are threadedly engaged and a mating surface of the first annular seal is configured to contact a mating surface of the second annular seal and provide a continuous internal seal along an axial length of the threaded connection.

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Campana, Argentina

Alejandra Paola Sanmartino