Laser-welded steel pipe

Details Laser-welded steel pipe Laser-welded steel pipe

1996-07-19

1999-10-05

Evans, Geoffrey S.

Metal treatment

Stock

Ferrous

148909, 21912163, C22C 3818

Patent

active

059617489

ABSTRACT:
A laser-welded steel pipe includes: a steel pipe consisting essentially of C in an amount of 0.01 to 0.5 wt. %, Si in an amount of 1 wt. % or less, Mn in an amount of 0.05 to 2 wt. % and Cr in an amount of 6 wt. % or less; and a weld zone having a melted and solidified metal structure containing following equations: an amount of less than 0.2 wt. %, wt. % or more.

REFERENCES:
patent: 4649256 (1987-03-01), Minamida et al.
patent: 4827099 (1989-05-01), Krebs et al.
patent: 5019189 (1991-05-01), Kumura et al.
patent: 5140123 (1992-08-01), Mitani
patent: 5213633 (1993-05-01), Hada et al.
patent: 5286309 (1994-02-01), Maeda et al.
patent: 5319179 (1994-06-01), Joecks et al.
patent: 5653899 (1997-08-01), Odake et al.

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