JPH0376602U - - Google Patents
Info
- Publication number
- JPH0376602U JPH0376602U JP13487489U JP13487489U JPH0376602U JP H0376602 U JPH0376602 U JP H0376602U JP 13487489 U JP13487489 U JP 13487489U JP 13487489 U JP13487489 U JP 13487489U JP H0376602 U JPH0376602 U JP H0376602U
- Authority
- JP
- Japan
- Prior art keywords
- truncated cone
- plug
- mandrel
- joint
- toughness
- 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
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 238000005553 drilling Methods 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Earth Drilling (AREA)
- Extrusion Of Metal (AREA)
Description
第１図は本考案によるプラグ固定部の径に傾き
をもたせることにより、半割機構の継手で固定し
た時の機構図、第２図は従来のプラグと継手の機
構図を示す。 １……プラグ、１Ａ……プラグ突
出部、２……継手、２Ａ……はめあい部、３……
マンドレル。
FIG. 1 shows a mechanical diagram of the present invention when the diameter of the plug fixing portion is inclined, and the plug is fixed by a joint of a half-splitting mechanism, and FIG. 2 shows a mechanical diagram of a conventional plug and a joint. 1...Plug, 1A...Plug protrusion, 2...Joint, 2A...Fitting part, 3...
mandrel.
Claims (1)
部を、マンドレル側へ漸次径大となる円錐台形状
とし、該円錐台形状部へ嵌合する孔部を有する継
手を設けてなる継目無鋼管穿孔用プラグ。 A seamless steel pipe drilling method in which the mandrel side end of a plug made of a low-toughness, wear-resistant material is shaped like a truncated cone whose diameter gradually increases toward the mandrel, and a joint having a hole that fits into the truncated cone shape is provided. Plug for.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13487489U JPH0376602U (en) | 1989-11-22 | 1989-11-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13487489U JPH0376602U (en) | 1989-11-22 | 1989-11-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0376602U true JPH0376602U (en) | 1991-07-31 |
Family
ID=31682178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13487489U Pending JPH0376602U (en) | 1989-11-22 | 1989-11-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0376602U (en) |
-
1989
- 1989-11-22 JP JP13487489U patent/JPH0376602U/ja active Pending