JPS5530327A - Pipe making method - Google Patents
Pipe making methodInfo
- Publication number
- JPS5530327A JPS5530327A JP10236678A JP10236678A JPS5530327A JP S5530327 A JPS5530327 A JP S5530327A JP 10236678 A JP10236678 A JP 10236678A JP 10236678 A JP10236678 A JP 10236678A JP S5530327 A JPS5530327 A JP S5530327A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- welding
- forming
- portions
- pipes
- 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
Abstract
PURPOSE: To enable the pipes of different diameters to be readily obtained by the same apparatus by force-forming the pipes in such a manner that their butt portions have the specified curvatures thence welding them with the specified welding tool conforming to the abovementioned curvatures then returning and forming them to a true circle in section.
CONSTITUTION: In the case of obtaining a pipe B of a larger diameter (ϕD) than the diameter ϕd of a standard pipe A, both edges of the blank 3 drawn from a blank coil 2 are finished by edge scarf tools 4. Next, while horizontal pressure is being applied to the pipe B by using horizontal pressure rollers not illustrated, the pipe is worked with forming rollers 5 and is formed to an oblong shape so that the radii of curvature of the portions near butt part 13' and the bottom portion N of the pipe become of the same values as the foregoing pipe A. Next, the portions around the butt part 13' of the pipe B are welded by using the electrode ring 15 used for welding of the pipe A of a low frequency welding device 6. Thereafter, the pipe B is returned and formed to a true circle section by drawing roll groups 10 and straightening roll groups 11, after which the pipe is cut 12.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10236678A JPS5530327A (en) | 1978-08-24 | 1978-08-24 | Pipe making method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10236678A JPS5530327A (en) | 1978-08-24 | 1978-08-24 | Pipe making method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5530327A true JPS5530327A (en) | 1980-03-04 |
Family
ID=14325452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10236678A Pending JPS5530327A (en) | 1978-08-24 | 1978-08-24 | Pipe making method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5530327A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60257924A (en) * | 1984-06-02 | 1985-12-19 | Kawasaki Steel Corp | Method and device for producing square pipe |
| JPH02205276A (en) * | 1989-02-01 | 1990-08-15 | Nippondenso Co Ltd | Production of thin electric resistance welded pipe |
| JPH02251314A (en) * | 1989-03-27 | 1990-10-09 | Nisshin Steel Co Ltd | Manufacture of thin metallic pipe excellent in sectional shape |
| JP2004167592A (en) * | 2002-11-22 | 2004-06-17 | Nisshin Steel Co Ltd | Manufacturing method of hot-dipped steel tube |
-
1978
- 1978-08-24 JP JP10236678A patent/JPS5530327A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60257924A (en) * | 1984-06-02 | 1985-12-19 | Kawasaki Steel Corp | Method and device for producing square pipe |
| JPH02205276A (en) * | 1989-02-01 | 1990-08-15 | Nippondenso Co Ltd | Production of thin electric resistance welded pipe |
| JPH02251314A (en) * | 1989-03-27 | 1990-10-09 | Nisshin Steel Co Ltd | Manufacture of thin metallic pipe excellent in sectional shape |
| JP2004167592A (en) * | 2002-11-22 | 2004-06-17 | Nisshin Steel Co Ltd | Manufacturing method of hot-dipped steel tube |
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