JPS5761427A - Method of manufacturing self-tightened couble pipe - Google Patents
Method of manufacturing self-tightened couble pipeInfo
- Publication number
- JPS5761427A JPS5761427A JP13516880A JP13516880A JPS5761427A JP S5761427 A JPS5761427 A JP S5761427A JP 13516880 A JP13516880 A JP 13516880A JP 13516880 A JP13516880 A JP 13516880A JP S5761427 A JPS5761427 A JP S5761427A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- expand
- outer pipe
- heating jackets
- tightened
- 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
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
PURPOSE: To shorten the time of processing in manufacturing a self-tightened double pipe, by heating an outer pipe with split heating jackets to thermally expand the outer pipe.
CONSTITUTION: Semicylindrical heating jackets 6 are provided on a right and a left stands 5, which are moved on a base 2 by motors 4. Pressurized oil heated by a boiler 13 is supplied to the heating jackets 6 to heat and expand an outer pipe 16. Icy water 21 is upplied into an inner pipe 15 to thermally contract it to insert the inner pipe into the couter pipe 16. While the outer pipe 16 is heated, pressure is applied to the interior of the inner pipe 15 to expand both the inner and the outer pipes 15, 16. The icy water is then drained out of the inner pipe 15. The stands 5 are displaced to separate the heating jackets 6 from each other rightward and leftward to spontaneously heat the inner-pipe 15 and spontaneously cool the outer pipe 16.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13516880A JPS5761427A (en) | 1980-09-30 | 1980-09-30 | Method of manufacturing self-tightened couble pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13516880A JPS5761427A (en) | 1980-09-30 | 1980-09-30 | Method of manufacturing self-tightened couble pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5761427A true JPS5761427A (en) | 1982-04-13 |
Family
ID=15145415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13516880A Pending JPS5761427A (en) | 1980-09-30 | 1980-09-30 | Method of manufacturing self-tightened couble pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5761427A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59157493A (en) * | 1983-02-24 | 1984-09-06 | Toshiba Corp | Heat transfer pipe and manufacturing method therefor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS521874U (en) * | 1975-06-23 | 1977-01-07 | ||
| JPS55117514A (en) * | 1979-02-28 | 1980-09-09 | Kawasaki Heavy Ind Ltd | Manufacture of double-ply pipe |
-
1980
- 1980-09-30 JP JP13516880A patent/JPS5761427A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS521874U (en) * | 1975-06-23 | 1977-01-07 | ||
| JPS55117514A (en) * | 1979-02-28 | 1980-09-09 | Kawasaki Heavy Ind Ltd | Manufacture of double-ply pipe |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59157493A (en) * | 1983-02-24 | 1984-09-06 | Toshiba Corp | Heat transfer pipe and manufacturing method therefor |
| JPH0524439B2 (en) * | 1983-02-24 | 1993-04-07 | Tokyo Shibaura Electric Co |
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