JPS621597Y2 - - Google Patents
Info
- Publication number
- JPS621597Y2 JPS621597Y2 JP2930681U JP2930681U JPS621597Y2 JP S621597 Y2 JPS621597 Y2 JP S621597Y2 JP 2930681 U JP2930681 U JP 2930681U JP 2930681 U JP2930681 U JP 2930681U JP S621597 Y2 JPS621597 Y2 JP S621597Y2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- inner tube
- leak detection
- double
- diameter
- 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.)
- Expired
Links
- 238000001514 detection method Methods 0.000 claims description 15
- 230000002950 deficient Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 230000007547 defect Effects 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Examining Or Testing Airtightness (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2930681U JPS621597Y2 (ref) | 1981-03-03 | 1981-03-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2930681U JPS621597Y2 (ref) | 1981-03-03 | 1981-03-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57145180U JPS57145180U (ref) | 1982-09-11 |
| JPS621597Y2 true JPS621597Y2 (ref) | 1987-01-14 |
Family
ID=29826900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2930681U Expired JPS621597Y2 (ref) | 1981-03-03 | 1981-03-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS621597Y2 (ref) |
-
1981
- 1981-03-03 JP JP2930681U patent/JPS621597Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57145180U (ref) | 1982-09-11 |
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