JPH0152085B2 - - Google Patents
Info
- Publication number
- JPH0152085B2 JPH0152085B2 JP54030650A JP3065079A JPH0152085B2 JP H0152085 B2 JPH0152085 B2 JP H0152085B2 JP 54030650 A JP54030650 A JP 54030650A JP 3065079 A JP3065079 A JP 3065079A JP H0152085 B2 JPH0152085 B2 JP H0152085B2
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- hole
- circular hole
- main pipe
- die
- 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
- 238000000034 method Methods 0.000 claims description 24
- 230000002093 peripheral effect Effects 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 6
- 238000007796 conventional method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 230000008719 thickening Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 235000013351 cheese Nutrition 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3065079A JPS55122627A (en) | 1979-03-16 | 1979-03-16 | Production of branching pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3065079A JPS55122627A (en) | 1979-03-16 | 1979-03-16 | Production of branching pipe |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55122627A JPS55122627A (en) | 1980-09-20 |
JPH0152085B2 true JPH0152085B2 (zh) | 1989-11-07 |
Family
ID=12309671
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3065079A Granted JPS55122627A (en) | 1979-03-16 | 1979-03-16 | Production of branching pipe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55122627A (zh) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6044683A (en) * | 1998-10-02 | 2000-04-04 | Shigemoto & Annett Ii, Inc. | Apparatus and method for forming joints in tubing |
DE10103176B4 (de) * | 2001-01-22 | 2010-06-02 | Behr Gmbh & Co. Kg | Verfahren zum Einbringen von Flachrohreinsteckschlitzen in ein Sammelrohr |
JP2008207576A (ja) * | 2007-02-23 | 2008-09-11 | Nippon Sharyo Seizo Kaisha Ltd | 鉄道車両用台車枠及びその製造方法 |
-
1979
- 1979-03-16 JP JP3065079A patent/JPS55122627A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS55122627A (en) | 1980-09-20 |
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