Erw oil-well pipe and process for producing same

Details Erw oil-well pipe and process for producing same Erw oil-well pipe and process for producing same

C - Chemistry, Metallurgy

21

D

166/68, 148/34.6

C21D 9/14 (2006.01) C21D 8/10 (2006.01)

Patent

CA 1239568

- 17 - ERW OIL-WELL PIPE AND PROCESS FOR PRODUCING SAME ABSTRACT OF THE DISCLOSURE An ERW oil-well pipe is strain-aged to exhibit a low hardness and a high yield strength, so that both sour-environment resistance and collapse resistance are obtained at better levels, as compared with quench and tempered ERW oil-well pipes.

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