JPS53128564A - Method of roll jointing pipe end - Google Patents

Method of roll jointing pipe end

Info

Publication number
JPS53128564A
JPS53128564A JP4320577A JP4320577A JPS53128564A JP S53128564 A JPS53128564 A JP S53128564A JP 4320577 A JP4320577 A JP 4320577A JP 4320577 A JP4320577 A JP 4320577A JP S53128564 A JPS53128564 A JP S53128564A
Authority
JP
Japan
Prior art keywords
pipe
pipe end
roll
jointing pipe
inner diameter
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
JP4320577A
Other languages
Japanese (ja)
Other versions
JPS5622611B2 (en
Inventor
Saburo Usami
Mamoru Takeuchi
Mitsuo Sudo
Shunichi Kishi
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
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP4320577A priority Critical patent/JPS5622611B2/ja
Publication of JPS53128564A publication Critical patent/JPS53128564A/en
Publication of JPS5622611B2 publication Critical patent/JPS5622611B2/ja
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To provide the subject method comprising forming the inner diameter of the outer sleeve smaller than the outer diameter of a pipe, and heating the same to expand said inner diameter greater than the outer diameter of the pipe, and inserting the pipe in the sleeve, thereby to reduce the tensile residual stress of the pipe end joint portion and prevent hydrogen leakage and cracks.
COPYRIGHT: (C)1978,JPO&Japio
JP4320577A 1977-04-14 1977-04-14 Expired JPS5622611B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4320577A JPS5622611B2 (en) 1977-04-14 1977-04-14

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4320577A JPS5622611B2 (en) 1977-04-14 1977-04-14

Publications (2)

Publication Number Publication Date
JPS53128564A true JPS53128564A (en) 1978-11-09
JPS5622611B2 JPS5622611B2 (en) 1981-05-26

Family

ID=12657415

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4320577A Expired JPS5622611B2 (en) 1977-04-14 1977-04-14

Country Status (1)

Country Link
JP (1) JPS5622611B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0257788A (en) * 1988-08-23 1990-02-27 Benkan Corp Pipe joint for copper pipe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0257788A (en) * 1988-08-23 1990-02-27 Benkan Corp Pipe joint for copper pipe

Also Published As

Publication number Publication date
JPS5622611B2 (en) 1981-05-26

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