High strength insulated tube
AssigneeVallourec Tube-Alloy, LLC
InventorGabriel ROUSSIE
Life of this patent
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Abstract
An insulated tube including a main body and an end piece, the end piece being attached to the main body, the main body having an inner tube and an outer tube, a radial gap being arranged between the inner tube and the outer tube, one between the outer tube and the inner tube being a cold hardened steel alloy tube, said cold hardened steel alloy tube having a first threaded portion and the end piece having a second threaded portion, the first threaded portion and the second threaded portion being screwed together such that the end piece is attached to the cold hardened steel tube in a sealed manner thanks to the cooperation between said first threaded portion and second threaded portion.
Claims15
An insulated tube comprising a main body and an end piece, the end piece being attached to the main body, the main body comprising an inner tube and an outer tube, the inner tube and the outer tube being separated by a radial gap, one between the outer tube and the inner tube being a cold hardened steel alloy tube, said cold hardened steel alloy tube having a first threaded portion and the end piece having a second threaded portion, the first threaded portion and the second threaded portion being screwed together such that the end piece is attached to the cold hardened steel tube in a sealed manner thanks to the cooperation between said first threaded portion and second threaded portion.
Dependencies are inferred from the claim text.