JPS542261A - Manufacture of thick steel pipe by o-pressing - Google Patents

Manufacture of thick steel pipe by o-pressing

Info

Publication number
JPS542261A
JPS542261A JP6724977A JP6724977A JPS542261A JP S542261 A JPS542261 A JP S542261A JP 6724977 A JP6724977 A JP 6724977A JP 6724977 A JP6724977 A JP 6724977A JP S542261 A JPS542261 A JP S542261A
Authority
JP
Japan
Prior art keywords
pressing
manufacture
steel pipe
thick steel
seam
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.)
Granted
Application number
JP6724977A
Other languages
Japanese (ja)
Other versions
JPS5611531B2 (en
Inventor
Tadao Sugiyama
Koji Yazawa
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
NKK Corp
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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP6724977A priority Critical patent/JPS542261A/en
Publication of JPS542261A publication Critical patent/JPS542261A/en
Publication of JPS5611531B2 publication Critical patent/JPS5611531B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

PURPOSE: To manufacture a thick steel pipe, all of the seam of which has been applied with needed compressive load, by pressing a U-shaped material a plurality of times by means of upper and lower dies of special structure for O-pressing.
COPYRIGHT: (C)1979,JPO&Japio
JP6724977A 1977-06-09 1977-06-09 Manufacture of thick steel pipe by o-pressing Granted JPS542261A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6724977A JPS542261A (en) 1977-06-09 1977-06-09 Manufacture of thick steel pipe by o-pressing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6724977A JPS542261A (en) 1977-06-09 1977-06-09 Manufacture of thick steel pipe by o-pressing

Publications (2)

Publication Number Publication Date
JPS542261A true JPS542261A (en) 1979-01-09
JPS5611531B2 JPS5611531B2 (en) 1981-03-14

Family

ID=13339451

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6724977A Granted JPS542261A (en) 1977-06-09 1977-06-09 Manufacture of thick steel pipe by o-pressing

Country Status (1)

Country Link
JP (1) JPS542261A (en)

Also Published As

Publication number Publication date
JPS5611531B2 (en) 1981-03-14

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