Seamless steel pipe for line pipe and a process for its...

Details Seamless steel pipe for line pipe and a process for its... Seamless steel pipe for line pipe and a process for its...

2011-04-26

2011-04-26

Yee, Deborah (Department: 1733)

Metal treatment

Stock

Ferrous

C148S333000, C148S334000, C148S335000, C148S336000, C148S909000, C148S654000, C148S593000, C148S663000

Reexamination Certificate

active

07931757

ABSTRACT:
A thick-walled seamless steel pipe for line pipe which has a high strength and improved toughness and corrosion resistance in spite of the thick wall and which is suitable for use as a riser and flow line has a chemical composition comprising, in mass percent, C: 0.02-0.08%, Si: at most 0.5%, Mn: 1.5-3.0%, Al: 0.001-0.10%, Mo: greater than 0.4%-1.2%, N: 0.002-0.015%, at least one of Ca and REM in a total amount of 0.0002-0.007%, and a remainder of Fe and impurities, with the impurities having the content of P: at most 0.05%, S: at most 0.005%, and O: at most 0.005%, the chemical composition satisfying the inequality: 0.8≦[Mn]×[Mo]≦2.6, wherein [Mn] and [Mo] are the numbers equivalent to the contents of Mn and Mo, respectively, in mass percent.

REFERENCES:
patent: 7-331381 (1995-12-01), None
patent: 09-041074 (1997-02-01), None
patent: 9-111343 (1997-04-01), None
patent: 09-235617 (1997-09-01), None
patent: 10-306347 (1998-11-01), None
patent: 11-140580 (1999-05-01), None
patent: 11-172365 (1999-06-01), None
patent: 2000-169913 (2000-06-01), None
patent: 2001-288532 (2001-10-01), None
patent: 2004-124158 (2004-04-01), None
patent: 2004/031420 (2004-04-01), None

Affiliated with

Also associated with

Rating

Seamless steel pipe for line pipe and a process for its... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Seamless steel pipe for line pipe and a process for its..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Seamless steel pipe for line pipe and a process for its... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2691395