JPS5693853A - Steel pipe for oil well with excellent compression strength - Google Patents
Steel pipe for oil well with excellent compression strengthInfo
- Publication number
- JPS5693853A JPS5693853A JP17026579A JP17026579A JPS5693853A JP S5693853 A JPS5693853 A JP S5693853A JP 17026579 A JP17026579 A JP 17026579A JP 17026579 A JP17026579 A JP 17026579A JP S5693853 A JPS5693853 A JP S5693853A
- Authority
- JP
- Japan
- Prior art keywords
- steel pipe
- compression strength
- oil well
- excellent compression
- particle size
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Heat Treatment Of Articles (AREA)
Abstract
PURPOSE: To enhance the compression strength of the steel pipe by finely dividing an austenite crystal particle size to control tensile stresss of an inner surface of the steel pipe.
CONSTITUTION: The steel pipe is hardened and tempered by high frequency induction heating to finely divide the austenite crystal particle size to ASTM N08 or more as well as to adjust a density of a water amount in water cooling after hardening and tempering and, thereby, the residual stress of the steel pipe is rendered to tensile in the inner surface and compressive in the outer surface.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17026579A JPS5693853A (en) | 1979-12-28 | 1979-12-28 | Steel pipe for oil well with excellent compression strength |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17026579A JPS5693853A (en) | 1979-12-28 | 1979-12-28 | Steel pipe for oil well with excellent compression strength |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5693853A true JPS5693853A (en) | 1981-07-29 |
Family
ID=15901724
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17026579A Pending JPS5693853A (en) | 1979-12-28 | 1979-12-28 | Steel pipe for oil well with excellent compression strength |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5693853A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5877550A (en) * | 1981-11-04 | 1983-05-10 | Sumitomo Metal Ind Ltd | Steel pipe with high collapse strength |
CN105899698A (en) * | 2014-02-04 | 2016-08-24 | 新日铁住金株式会社 | Steel pipe |
-
1979
- 1979-12-28 JP JP17026579A patent/JPS5693853A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5877550A (en) * | 1981-11-04 | 1983-05-10 | Sumitomo Metal Ind Ltd | Steel pipe with high collapse strength |
JPH0143009B2 (en) * | 1981-11-04 | 1989-09-18 | Sumitomo Metal Ind | |
CN105899698A (en) * | 2014-02-04 | 2016-08-24 | 新日铁住金株式会社 | Steel pipe |
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