JPS555165A - Production of seamed pipe - Google Patents
Production of seamed pipeInfo
- Publication number
- JPS555165A JPS555165A JP7782878A JP7782878A JPS555165A JP S555165 A JPS555165 A JP S555165A JP 7782878 A JP7782878 A JP 7782878A JP 7782878 A JP7782878 A JP 7782878A JP S555165 A JPS555165 A JP S555165A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- parts
- circumferential groove
- heated
- rolls
- 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
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
PURPOSE: To enable the seamed pipe to be produced at high efficiency to a high quality equivalent to that of electric-welded tubes by locally heating the butt edge parts of an open pipe formed from heated skelp up to its melting temperature and pressure contacting said parts with pressure rolls provided with a circumferential groove on the portion corresponding to the edge part.
CONSTITUTION: The skelp 2 having been heated to about 1000 to 1300°C in a heating furnace 1 is formed to an open pipe 2a by perpendicular forming rolls 3. Next, the pipe is introduced into a heating unit such as high frequency induction heating unit 4 or the like, where both edge parts 2b are locally heated to a melting temperature of about 1400°C. Thereafter, these parts are bonded immediately by horizontal pressure rolls 5 provided with a circumferential groove 8 in the portion opposing to the pipe seam part. The pipe then subsequently pass through drawing rolls 61, 62... whereby it is drawn to a desired size. AT the amset, the outside beads 2C overhanging to the circumferential groove 8 are cut away with a bead cutter 7.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7782878A JPS555165A (en) | 1978-06-26 | 1978-06-26 | Production of seamed pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7782878A JPS555165A (en) | 1978-06-26 | 1978-06-26 | Production of seamed pipe |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS555165A true JPS555165A (en) | 1980-01-16 |
Family
ID=13644892
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7782878A Pending JPS555165A (en) | 1978-06-26 | 1978-06-26 | Production of seamed pipe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS555165A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58122124A (en) * | 1982-01-12 | 1983-07-20 | Nippon Steel Corp | Forming method of forge welding steel pipe |
US4945743A (en) * | 1988-03-23 | 1990-08-07 | Sumitomo Metal Industries, Ltd. | Apparatus for manufacturing electric welded pipes under hot conditions |
US5005395A (en) * | 1988-03-23 | 1991-04-09 | Sumitomo Metal Industries, Ltd. | Method of manufacturing electric welded pipes under hot conditions |
-
1978
- 1978-06-26 JP JP7782878A patent/JPS555165A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58122124A (en) * | 1982-01-12 | 1983-07-20 | Nippon Steel Corp | Forming method of forge welding steel pipe |
US4945743A (en) * | 1988-03-23 | 1990-08-07 | Sumitomo Metal Industries, Ltd. | Apparatus for manufacturing electric welded pipes under hot conditions |
US5005395A (en) * | 1988-03-23 | 1991-04-09 | Sumitomo Metal Industries, Ltd. | Method of manufacturing electric welded pipes under hot conditions |
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