JPH0219727B2 - - Google Patents

Info

Publication number
JPH0219727B2
JPH0219727B2 JP7642684A JP7642684A JPH0219727B2 JP H0219727 B2 JPH0219727 B2 JP H0219727B2 JP 7642684 A JP7642684 A JP 7642684A JP 7642684 A JP7642684 A JP 7642684A JP H0219727 B2 JPH0219727 B2 JP H0219727B2
Authority
JP
Japan
Prior art keywords
steel ingot
mandrel
drilling
axis
punching
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
Application number
JP7642684A
Other languages
English (en)
Japanese (ja)
Other versions
JPS60221116A (ja
Inventor
Takeshige Katsumata
Kenichiro Umeda
Takashi Saito
Masatomi Shinho
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Engineering Corp
Original Assignee
Nippon Kokan Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Kokan Ltd filed Critical Nippon Kokan Ltd
Priority to JP7642684A priority Critical patent/JPS60221116A/ja
Publication of JPS60221116A publication Critical patent/JPS60221116A/ja
Publication of JPH0219727B2 publication Critical patent/JPH0219727B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Metal Extraction Processes (AREA)
JP7642684A 1984-04-18 1984-04-18 大径厚肉鋼管の製造方法 Granted JPS60221116A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7642684A JPS60221116A (ja) 1984-04-18 1984-04-18 大径厚肉鋼管の製造方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7642684A JPS60221116A (ja) 1984-04-18 1984-04-18 大径厚肉鋼管の製造方法

Publications (2)

Publication Number Publication Date
JPS60221116A JPS60221116A (ja) 1985-11-05
JPH0219727B2 true JPH0219727B2 (enrdf_load_stackoverflow) 1990-05-02

Family

ID=13604840

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7642684A Granted JPS60221116A (ja) 1984-04-18 1984-04-18 大径厚肉鋼管の製造方法

Country Status (1)

Country Link
JP (1) JPS60221116A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH066229U (ja) * 1992-06-29 1994-01-25 川澄化学工業株式会社 Ａ式ダンボ−ル

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH066229U (ja) * 1992-06-29 1994-01-25 川澄化学工業株式会社 Ａ式ダンボ−ル

Also Published As

Publication number Publication date
JPS60221116A (ja) 1985-11-05

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