Line pipe having good corrosion-resistance and weldability

Details Line pipe having good corrosion-resistance and weldability Line pipe having good corrosion-resistance and weldability

1992-12-08

1994-01-04

Zimmerman, John

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

428685, 138142, 138143, B32B 1518, F16L 902, F16L 918

Patent

active

052758931

ABSTRACT:
Line pipe having good corrosion-resistance and weldability, in which at least the inner surface of the pipe that is in direct contact with the fluid moved through the pipe is formed of high chromium steel that contains, by weight percent, 7.5 to 16 percent chromium, a carbon content reduced to no more than 0.03 percent and a nitrogen content reduced to no more than 0.02 percent, and a substrate that is not in direct contact with the fluid and is formed of steel that contains 0.02 to 0.25 percent carbon, 0.1 to 1.0 percent silicon, 0.05 to 2.0 percent manganese and 0.005 to 0.1 percent aluminum, a phosphorus impurity content reduced to no more than 0.015 percent and a sulfur impurity content reduced to no more than 0.005 percent, and in which the thickness of the high chromium steel portion does not exceed 25 percent of the total thickness of the pipe.

REFERENCES:
patent: 3712317 (1973-01-01), Hayashi et al.
patent: 3770394 (1973-11-01), Bressundli
patent: 3832136 (1974-08-01), Ohara et al.
patent: 3956809 (1976-05-01), Chivinsky
patent: 4464209 (1984-08-01), Taira et al.
patent: 4943489 (1990-07-01), Kuhara et al.
U.S. Pipe-Industrial Products Division, Burlington, NJ, brochure 1981, pp. 1-32.

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