JPS55122853A - Welded steel tube having superior butted portion toughness - Google Patents
Welded steel tube having superior butted portion toughnessInfo
- Publication number
- JPS55122853A JPS55122853A JP3090879A JP3090879A JPS55122853A JP S55122853 A JPS55122853 A JP S55122853A JP 3090879 A JP3090879 A JP 3090879A JP 3090879 A JP3090879 A JP 3090879A JP S55122853 A JPS55122853 A JP S55122853A
- Authority
- JP
- Japan
- Prior art keywords
- steel tube
- welded steel
- superior
- toughness
- butted portion
- 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.)
- Granted
Links
Landscapes
- Heat Treatment Of Articles (AREA)
Abstract
PURPOSE: To provide high toughness to the weld zone of an electric welded steel tube consisting of a respectively specified ratio of C, Si, Mn, P, S and sol. Al, N esp. 0.0030% or less and the balance Fe and manufactured esp. by high or low frequency electric resistance welding.
CONSTITUTION: This welded steel tube is made of carbon steel consisting of C≤ 0.3%, Si≤1.00%, Mn 0.2W2.00%, P≤0.05%, S≤0.05%, sol. Al 0.01W0.10%, N≤0.0030%, and the balance Fe and inevitable impurities. Nb 0.01W0.15% and/or V 0.01W0.20% may be added to the compsn. to further enhance the strength. By controlling the N content of the steel to 0.0030% or less a toughness lowering due to the influence of residual strain and working strain in the manufacturing process and the influence of heat and working strain in use can be minimized.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54030908A JPS5853707B2 (en) | 1979-03-15 | 1979-03-15 | ERW steel pipe with excellent butt toughness |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54030908A JPS5853707B2 (en) | 1979-03-15 | 1979-03-15 | ERW steel pipe with excellent butt toughness |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55122853A true JPS55122853A (en) | 1980-09-20 |
JPS5853707B2 JPS5853707B2 (en) | 1983-11-30 |
Family
ID=12316803
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54030908A Expired JPS5853707B2 (en) | 1979-03-15 | 1979-03-15 | ERW steel pipe with excellent butt toughness |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5853707B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6418015U (en) * | 1987-07-21 | 1989-01-30 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS502847A (en) * | 1973-05-10 | 1975-01-13 | ||
JPS50139013A (en) * | 1974-04-27 | 1975-11-06 |
-
1979
- 1979-03-15 JP JP54030908A patent/JPS5853707B2/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS502847A (en) * | 1973-05-10 | 1975-01-13 | ||
JPS50139013A (en) * | 1974-04-27 | 1975-11-06 |
Also Published As
Publication number | Publication date |
---|---|
JPS5853707B2 (en) | 1983-11-30 |
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