JPS5472752A - Manufacture of spirally welded pipe - Google Patents

Manufacture of spirally welded pipe

Info

Publication number
JPS5472752A
JPS5472752A JP14023777A JP14023777A JPS5472752A JP S5472752 A JPS5472752 A JP S5472752A JP 14023777 A JP14023777 A JP 14023777A JP 14023777 A JP14023777 A JP 14023777A JP S5472752 A JPS5472752 A JP S5472752A
Authority
JP
Japan
Prior art keywords
strip
welding
welded pipe
spirally
fed
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
JP14023777A
Other languages
Japanese (ja)
Other versions
JPS598453B2 (en
Inventor
Shigeru Suzuki
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.)
Kubota Corp
Original Assignee
Kubota Corp
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 Kubota Corp filed Critical Kubota Corp
Priority to JP52140237A priority Critical patent/JPS598453B2/en
Publication of JPS5472752A publication Critical patent/JPS5472752A/en
Publication of JPS598453B2 publication Critical patent/JPS598453B2/en
Expired legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To make preventable the generation of welding defect, in manufacturing the spirally welded pipe, by feeding the strip material at downward pitch to the formerly spirally coiled strip, and by carrying out the internal welding at the position in which edges of above two strips coincide with each other.
CONSTITUTION: The strip 12 is spirally coiled by the forming rolls 14, 15 and 16; the edge of this strip 12 coincides into a butt condition with the edge of the strip 11 just being fed into; this position of coincidence between two edges is shown by Q; the strip 11 is fed at downward pitch into this position Q. The internal welding is carried out on these strips 11 and 12 at this position Q by the welding torch 13. The suitable feed angle θ ranges from 2 to 6 degrees against the horizon. According to this method, the internal welding is carried out at the position where the forward direction of the welding becomes upward pitch, so that the superior spirally welded pipe without welding defect like as slag inclusion, etc., can be manufactured.
COPYRIGHT: (C)1979,JPO&Japio
JP52140237A 1977-11-22 1977-11-22 Manufacturing method of spiral tube Expired JPS598453B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP52140237A JPS598453B2 (en) 1977-11-22 1977-11-22 Manufacturing method of spiral tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP52140237A JPS598453B2 (en) 1977-11-22 1977-11-22 Manufacturing method of spiral tube

Publications (2)

Publication Number Publication Date
JPS5472752A true JPS5472752A (en) 1979-06-11
JPS598453B2 JPS598453B2 (en) 1984-02-24

Family

ID=15264088

Family Applications (1)

Application Number Title Priority Date Filing Date
JP52140237A Expired JPS598453B2 (en) 1977-11-22 1977-11-22 Manufacturing method of spiral tube

Country Status (1)

Country Link
JP (1) JPS598453B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2697453A1 (en) * 1992-11-05 1994-05-06 Europipe France Continuous fabrication of steel tube from strip - by passing through bending and counter-bending rollers and welding joining plane by means of multi-wire welding heads
AT500488B1 (en) * 2004-07-28 2006-01-15 Berndorf Band Gmbh & Co ENDLESS STEEL TAPE BUILT WITH ONLY ONE PARTIAL STRIP

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2697453A1 (en) * 1992-11-05 1994-05-06 Europipe France Continuous fabrication of steel tube from strip - by passing through bending and counter-bending rollers and welding joining plane by means of multi-wire welding heads
AT500488B1 (en) * 2004-07-28 2006-01-15 Berndorf Band Gmbh & Co ENDLESS STEEL TAPE BUILT WITH ONLY ONE PARTIAL STRIP

Also Published As

Publication number Publication date
JPS598453B2 (en) 1984-02-24

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