JPH04182094A - Circumferential welding method for high strength steel pipe - Google Patents

Circumferential welding method for high strength steel pipe

Info

Publication number
JPH04182094A
JPH04182094A JP30913690A JP30913690A JPH04182094A JP H04182094 A JPH04182094 A JP H04182094A JP 30913690 A JP30913690 A JP 30913690A JP 30913690 A JP30913690 A JP 30913690A JP H04182094 A JPH04182094 A JP H04182094A
Authority
JP
Japan
Prior art keywords
steel pipe
pass welding
electrode
strength steel
grade
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
JP30913690A
Other languages
Japanese (ja)
Inventor
Yasuto Fukada
Yuichi Komizo
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.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries 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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP30913690A priority Critical patent/JPH04182094A/en
Publication of JPH04182094A publication Critical patent/JPH04182094A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prevent a cold quenching crack even in the high strength steel pipe by making a strength grade of a cellulose-based electrode used for root pass welding lower than a base metal strength grade and performing hot pass welding following root pass welding by a low hydrogen type electrode.
CONSTITUTION: A sound back bead is obtained by using the cellulose-based electrode for root pass welding. In addition, the cold quenching crack sensibility is remarkably improved even in the case of the high strength steel pipe with the X80 grade by making the electrode strength grade lower than the base metal strength grade and besides, performing hot pass welding by the low hydrogen type electrode.
COPYRIGHT: (C)1992,JPO&Japio
JP30913690A 1990-11-14 1990-11-14 Circumferential welding method for high strength steel pipe Pending JPH04182094A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP30913690A JPH04182094A (en) 1990-11-14 1990-11-14 Circumferential welding method for high strength steel pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP30913690A JPH04182094A (en) 1990-11-14 1990-11-14 Circumferential welding method for high strength steel pipe

Publications (1)

Publication Number Publication Date
JPH04182094A true JPH04182094A (en) 1992-06-29

Family

ID=17989335

Family Applications (1)

Application Number Title Priority Date Filing Date
JP30913690A Pending JPH04182094A (en) 1990-11-14 1990-11-14 Circumferential welding method for high strength steel pipe

Country Status (1)

Country Link
JP (1) JPH04182094A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009187557A (en) * 2009-02-13 2009-08-20 Canon Inc Information processing system and method for controlling the same, and server device and program for controlling the same
CN103212952A (en) * 2013-04-25 2013-07-24 中国石油集团渤海石油装备制造有限公司 Manufacturing method of super-large-diameter large-wall thick longitudinal submerged arc welded pipe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009187557A (en) * 2009-02-13 2009-08-20 Canon Inc Information processing system and method for controlling the same, and server device and program for controlling the same
CN103212952A (en) * 2013-04-25 2013-07-24 中国石油集团渤海石油装备制造有限公司 Manufacturing method of super-large-diameter large-wall thick longitudinal submerged arc welded pipe

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