Hochzugfester Stahldraht für flexible rohrförmige Struktur

Details

Veröffentlichungs-Nr.

EP3050978

Aktenzeichen

EP15153255

Anmeldetag

30. Januar 2015

Veröffentlichung

2. September 2020

Erteilung

2. September 2020

Rechtsraum

EP

IPC

C22C38/02C22C38/04C22C38/12C22C38/18C22C38/34C21D1/25C21D8/06F16L11/08

Abstract

A flexible tubular structure for oil exploitation comprising a polymeric internal barrier layer and at least one metallic reinforcing layer comprising at least one elongated steel element having a non-round cross-section and having as steel composition: a carbon content ranging from 0.20 weight percent to 1.00 weight percent, a silicon content ranging from 0.05 weight percent to 2.0 weight percent, a manganese content ranging from 0.40 weight percent to 1.0 weight percent, a chromium content ranging from 0.0 weight percent to 1.0 weight percent, a sulfur and phosphor content being individually limited to 0.025 weight percent, contents of nickel, vanadium, aluminium or other micro-alloying elements all being individually limited to 0.5 weight percent, the remainder being iron, said steel having martensitic structure that comprises martensitic grains, wherein a fraction of at least 10 volume percent of martensitic grains is oriented.

Anmelder

Firma

Technip France

Land

🇫🇷 Frankreich

Fachgebiete