JPS55128327A - Bending device of multiple pipes - Google Patents

Bending device of multiple pipes

Info

Publication number
JPS55128327A
JPS55128327A JP3553379A JP3553379A JPS55128327A JP S55128327 A JPS55128327 A JP S55128327A JP 3553379 A JP3553379 A JP 3553379A JP 3553379 A JP3553379 A JP 3553379A JP S55128327 A JPS55128327 A JP S55128327A
Authority
JP
Japan
Prior art keywords
bending
pipe
spacers
wires
inside pipe
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
Application number
JP3553379A
Other languages
Japanese (ja)
Inventor
Masanori Sagawa
Naoji Aoki
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.)
Hitachi Ltd
Hitachi Kizai Inc
Original Assignee
Hitachi Ltd
Hitachi Kizai Inc
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 Hitachi Ltd, Hitachi Kizai Inc filed Critical Hitachi Ltd
Priority to JP3553379A priority Critical patent/JPS55128327A/en
Publication of JPS55128327A publication Critical patent/JPS55128327A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prevent the deformation and foreign matter deposition of the cross section of the pipes and shorten bending time by inserting spacers and bending wires which are detachable at the bending portion between an inside pipe and an outside pipe.
CONSTITUTION: Prior to bending, spacers 3 are welded to the required portions of the working portion of an inside pipe 2 and the inside pipe 2 welded with the spacers 3 is inserted to the position corresponding to the bending portion of an outside pipe 1. Further, bending wires 4 which are connected separatably in the bending portion are inserted between the spacers 3, so as to make contact with the pipes 1, 2, between the inside pipe 2 and outside pipe 1, after which bending is done. After the bending, the wires 4 are pulled in the axial direction from the both pipe ends.
COPYRIGHT: (C)1980,JPO&Japio
JP3553379A 1979-03-28 1979-03-28 Bending device of multiple pipes Pending JPS55128327A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3553379A JPS55128327A (en) 1979-03-28 1979-03-28 Bending device of multiple pipes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3553379A JPS55128327A (en) 1979-03-28 1979-03-28 Bending device of multiple pipes

Publications (1)

Publication Number Publication Date
JPS55128327A true JPS55128327A (en) 1980-10-04

Family

ID=12444365

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3553379A Pending JPS55128327A (en) 1979-03-28 1979-03-28 Bending device of multiple pipes

Country Status (1)

Country Link
JP (1) JPS55128327A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008023537A (en) * 2006-07-19 2008-02-07 Hiroshima Univ Method for producing double tube with curved part

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008023537A (en) * 2006-07-19 2008-02-07 Hiroshima Univ Method for producing double tube with curved part

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