C - Chemistry – Metallurgy – 21 – D
Patent
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.
475496
Chano Zensaku
Murayama Hiroshi
Yamamoto Yasushi
Goudreau Gage Dubuc
Nippon Steel Corporation
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