JPH02144746U - - Google Patents
Info
- Publication number
- JPH02144746U JPH02144746U JP5281689U JP5281689U JPH02144746U JP H02144746 U JPH02144746 U JP H02144746U JP 5281689 U JP5281689 U JP 5281689U JP 5281689 U JP5281689 U JP 5281689U JP H02144746 U JPH02144746 U JP H02144746U
- Authority
- JP
- Japan
- Prior art keywords
- plate
- hole
- pilot hole
- soundness
- drilled
- 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
- 230000007547 defect Effects 0.000 claims description 4
- 239000004604 Blowing Agent Substances 0.000 claims description 2
- 239000011324 bead Substances 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000005187 foaming Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 239000004088 foaming agent Substances 0.000 claims 1
Landscapes
- Examining Or Testing Airtightness (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5281689U JPH02144746U (cs) | 1989-05-08 | 1989-05-08 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5281689U JPH02144746U (cs) | 1989-05-08 | 1989-05-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH02144746U true JPH02144746U (cs) | 1990-12-07 |
Family
ID=33446715
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5281689U Pending JPH02144746U (cs) | 1989-05-08 | 1989-05-08 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH02144746U (cs) |
-
1989
- 1989-05-08 JP JP5281689U patent/JPH02144746U/ja active Pending