Flexible tubular pipe with an anti-wear sheath
First Claim
1. A flexible tubular pipe for transporting hydrocarbons, said flexible tubular pipe comprisingat least two metal armor plies and an anti-wear layer made of a plastic separating said plies, each of said plies comprises a helically wound longitudinal metal element and said anti-wear layer comprises a helically wound tape of said plastic, said plastic of said layer comprises an amorphous polymer having a glass transition temperature between 175 and 255°
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1 Assignment
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Accused Products
Abstract
A flexible tubular conduit for transporting hydrocarbons comprising at least two metal sheathing covers which are separated by a plastic anti-wear layer. Each cover is produced by helically winding a metal longitudinal element. The anti-wear layer is produced by helically winding a plastic material strip. The plastic material comprises an amorphous polymer with a glass transition temperature ranging from 175 to 255° C.
17 Citations
16 Claims
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1. A flexible tubular pipe for transporting hydrocarbons, said flexible tubular pipe comprising
at least two metal armor plies and an anti-wear layer made of a plastic separating said plies, each of said plies comprises a helically wound longitudinal metal element and said anti-wear layer comprises a helically wound tape of said plastic, said plastic of said layer comprises an amorphous polymer having a glass transition temperature between 175 and 255°
- 13. A process for producing a flexible tubular pipe for transporting hydrocarbons, said process comprising winding at least two longitudinal metal elements helically in sequence to form two armor plies with one ply outside another ply, winding plastic tapes helically between said armor plies to form an anti-wear layer, wherein the tapes are of a plastic comprising an amorphous polymer having a glass transition temperature between 175 and 255°
Specification