JPS54112348A - Preparation of stress corrosion crack resisting weld joint steel pipe - Google Patents
Preparation of stress corrosion crack resisting weld joint steel pipeInfo
- Publication number
- JPS54112348A JPS54112348A JP1849678A JP1849678A JPS54112348A JP S54112348 A JPS54112348 A JP S54112348A JP 1849678 A JP1849678 A JP 1849678A JP 1849678 A JP1849678 A JP 1849678A JP S54112348 A JPS54112348 A JP S54112348A
- Authority
- JP
- Japan
- Prior art keywords
- ring
- steel pipe
- pipe
- stress corrosion
- welded
- 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 lighten the stress corrosion cracking from weld zone of weld joint steel pipe, by attaching the restraint ring on the outer surface of the steel pipe exposed the inner tube face to corrosive environment and welding the restraint ring each other ultimately. CONSTITUTION:The restraint ring 5 made of mild steel or low alloy steel, is attached and is welded on both sides putting between weld zone on the outer face of the steel pipe 1 used for butt welded chemical plant etc. Next, the ring 5 is welded each other preheating higher than the temperature of the pipe 1 exposed to corrosive environment. Temperature rise of the pipe 1 by heating the ring 5, is prevented by passing cooling medium through the inner face of the pipe 1. Hereby, compression stress is given on the weld zone generating a large tension stress on the ring 5 itself. Accordingly, stress corrosion cracking is able to lighten and locally initiated crack is able to reserve in board thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1849678A JPS54112348A (en) | 1978-02-22 | 1978-02-22 | Preparation of stress corrosion crack resisting weld joint steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1849678A JPS54112348A (en) | 1978-02-22 | 1978-02-22 | Preparation of stress corrosion crack resisting weld joint steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS54112348A true JPS54112348A (en) | 1979-09-03 |
Family
ID=11973220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1849678A Pending JPS54112348A (en) | 1978-02-22 | 1978-02-22 | Preparation of stress corrosion crack resisting weld joint steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54112348A (en) |
-
1978
- 1978-02-22 JP JP1849678A patent/JPS54112348A/en active Pending
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Legal Events
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|---|---|---|---|
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| LAPS | Cancellation because of no payment of annual fees |