JPH025492U - - Google Patents
Info
- Publication number
- JPH025492U JPH025492U JP8203888U JP8203888U JPH025492U JP H025492 U JPH025492 U JP H025492U JP 8203888 U JP8203888 U JP 8203888U JP 8203888 U JP8203888 U JP 8203888U JP H025492 U JPH025492 U JP H025492U
- Authority
- JP
- Japan
- Prior art keywords
- recesses
- tapered threaded
- metal tube
- tapered
- butt
- 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
- 239000002184 metal Substances 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 210000001503 joint Anatomy 0.000 claims 2
Landscapes
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8203888U JPH025492U (zh) | 1988-06-20 | 1988-06-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8203888U JPH025492U (zh) | 1988-06-20 | 1988-06-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH025492U true JPH025492U (zh) | 1990-01-16 |
Family
ID=31306806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8203888U Pending JPH025492U (zh) | 1988-06-20 | 1988-06-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH025492U (zh) |
-
1988
- 1988-06-20 JP JP8203888U patent/JPH025492U/ja active Pending