STEEL FOR OIL-TRUNK AND GAS-MAIN PIPELINES Russian patent published in 2002 - IPC

Abstract RU 2180016 C1

FIELD: steelmaking. SUBSTANCE: invention relates to low-alloy steels resistant against hydrogen cracking for use in manufacturing welded oil- and gas-pipeline pipes suitable for exploiting under far North conditions. Steel contains, wt %: carbon 0.04-0.12, manganese 0.7-1.7, silicon 0.2-0.9, vanadium 0.03-0.12, niobium 0.02-0.08, aluminum 0.02- 0.06, nitrogen 0.004-0,01-, calcium 0.001-0.02, chromium up to 0.3, nickel up to 0.3, copper up to 0.3, titanium up to 0.03, sulfur up to 0.008, phosphorus up to 0.0015, molybdenum 0.001-0.15, and iron - the balance. EFFECT: increased viscosity and improved workability of steel. 3 tbl

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RU 2 180 016 C1

Authors

Stepanov A.A.

Lamukhin A.M.

Zinchenko S.D.

D'Jakonova V.S.

Golovanov A.V.

Gurkin M.A.

Rosljakova N.E.

Chikalov S.G.

Komarov A.I.

Sedykh A.M.

Stepantsov Eh.V.

Ron'Zhin A.I.

Shishov A.A.

Tetjueva T.V.

Zikeev V.N.

Klypin B.A.

Dates

2002-02-27Published

2001-05-14Filed