JPH0647679Y2 - 穴明け治具 - Google Patents
穴明け治具Info
- Publication number
- JPH0647679Y2 JPH0647679Y2 JP6794190U JP6794190U JPH0647679Y2 JP H0647679 Y2 JPH0647679 Y2 JP H0647679Y2 JP 6794190 U JP6794190 U JP 6794190U JP 6794190 U JP6794190 U JP 6794190U JP H0647679 Y2 JPH0647679 Y2 JP H0647679Y2
- Authority
- JP
- Japan
- Prior art keywords
- tip
- steel pipe
- center shaft
- block
- lot
- 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 - Lifetime
Links
- 238000005553 drilling Methods 0.000 title claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 24
- 239000010959 steel Substances 0.000 claims description 24
- 238000010438 heat treatment Methods 0.000 claims description 15
- 239000011347 resin Substances 0.000 description 19
- 229920005989 resin Polymers 0.000 description 19
- 229920006328 Styrofoam Polymers 0.000 description 8
- 239000008261 styrofoam Substances 0.000 description 8
- 238000004080 punching Methods 0.000 description 3
- 238000012407 engineering method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000011384 asphalt concrete Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229920006248 expandable polystyrene Polymers 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
Landscapes
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6794190U JPH0647679Y2 (ja) | 1990-06-28 | 1990-06-28 | 穴明け治具 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6794190U JPH0647679Y2 (ja) | 1990-06-28 | 1990-06-28 | 穴明け治具 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0429000U JPH0429000U (enrdf_load_stackoverflow) | 1992-03-09 |
JPH0647679Y2 true JPH0647679Y2 (ja) | 1994-12-07 |
Family
ID=31601968
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6794190U Expired - Lifetime JPH0647679Y2 (ja) | 1990-06-28 | 1990-06-28 | 穴明け治具 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0647679Y2 (enrdf_load_stackoverflow) |
-
1990
- 1990-06-28 JP JP6794190U patent/JPH0647679Y2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0429000U (enrdf_load_stackoverflow) | 1992-03-09 |
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