JPS5533841A - Production of hollow double pipe - Google Patents
Production of hollow double pipeInfo
- Publication number
- JPS5533841A JPS5533841A JP10597378A JP10597378A JPS5533841A JP S5533841 A JPS5533841 A JP S5533841A JP 10597378 A JP10597378 A JP 10597378A JP 10597378 A JP10597378 A JP 10597378A JP S5533841 A JPS5533841 A JP S5533841A
- Authority
- JP
- Japan
- Prior art keywords
- metal plate
- pipe part
- inside pipe
- hollow double
- recess
- 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
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
PURPOSE: To enable the number of fabrications to be reduced considerably by applying roll forming to one sheet of metal plate thereby integrally forming an inside pipe part and an outside pipe part.
CONSTITUTION: A broad metal plate 1 is roll formed to form a recess 8 in the central part and this recess 8 is further formed circular to be formed to an inside pipe part 2 having a channel 5 of a desire diameter therein. At the sealing part of this inside pipe part 2, a metal plate superposed straight part 4 is integrally formed. Next, the excess metal plate both side portions 9, 10 extending from this straight line part 4 to both sides are given winding habit so as to be coiled around the inside pipe part 2, the both ends whereof are butted to form an outside pipe part 3. After this, welding 12, 13 are applied to the foregoing metal plate superposed straight part 4 and both parts 11, whereby the hollow double pipe 7 is completed.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10597378A JPS5533841A (en) | 1978-08-29 | 1978-08-29 | Production of hollow double pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10597378A JPS5533841A (en) | 1978-08-29 | 1978-08-29 | Production of hollow double pipe |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5533841A true JPS5533841A (en) | 1980-03-10 |
JPS567767B2 JPS567767B2 (en) | 1981-02-19 |
Family
ID=14421706
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10597378A Granted JPS5533841A (en) | 1978-08-29 | 1978-08-29 | Production of hollow double pipe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5533841A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100928230B1 (en) | 2007-11-15 | 2009-11-24 | 정창선 | Double pipe manufacturing method |
-
1978
- 1978-08-29 JP JP10597378A patent/JPS5533841A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100928230B1 (en) | 2007-11-15 | 2009-11-24 | 정창선 | Double pipe manufacturing method |
Also Published As
Publication number | Publication date |
---|---|
JPS567767B2 (en) | 1981-02-19 |
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