JPS56168981A - Production of electric welded tube - Google Patents

Production of electric welded tube

Info

Publication number
JPS56168981A
JPS56168981A JP7206780A JP7206780A JPS56168981A JP S56168981 A JPS56168981 A JP S56168981A JP 7206780 A JP7206780 A JP 7206780A JP 7206780 A JP7206780 A JP 7206780A JP S56168981 A JPS56168981 A JP S56168981A
Authority
JP
Japan
Prior art keywords
edge parts
frequency current
parts
point
heating
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
JP7206780A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0248349B2 (cs
Inventor
Yoshiyasu Kitagawa
Hirotsugu Inaba
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 JP7206780A priority Critical patent/JPS56168981A/ja
Publication of JPS56168981A publication Critical patent/JPS56168981A/ja
Publication of JPH0248349B2 publication Critical patent/JPH0248349B2/ja
Granted legal-status Critical Current

Links

JP7206780A 1980-05-28 1980-05-28 Production of electric welded tube Granted JPS56168981A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7206780A JPS56168981A (en) 1980-05-28 1980-05-28 Production of electric welded tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7206780A JPS56168981A (en) 1980-05-28 1980-05-28 Production of electric welded tube

Publications (2)

Publication Number Publication Date
JPS56168981A true JPS56168981A (en) 1981-12-25
JPH0248349B2 JPH0248349B2 (cs) 1990-10-24

Family

ID=13478673

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7206780A Granted JPS56168981A (en) 1980-05-28 1980-05-28 Production of electric welded tube

Country Status (1)

Country Link
JP (1) JPS56168981A (cs)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS623879A (ja) * 1985-06-28 1987-01-09 Sumitomo Metal Ind Ltd 電縫鋼管の製造方法
JPH02160189A (ja) * 1988-12-09 1990-06-20 Sumitomo Metal Ind Ltd 電縫管の製造方法
JPH03133575A (ja) * 1989-07-24 1991-06-06 Kawasaki Heavy Ind Ltd 高周波予熱と高密度エネルギー溶融溶接法を組合わせた金属溶接管の連続製造法と装置
US5961748A (en) * 1995-08-09 1999-10-05 Nkk Corporation Laser-welded steel pipe
CN1068268C (zh) * 1997-07-09 2001-07-11 上海康德工程技术研究所 一种低合金结构钢焊接钢管的方法
WO2009060764A1 (ja) * 2007-11-05 2009-05-14 Nippon Steel Corporation 鋼管材の溶接部加熱装置及び方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5133512A (ja) * 1974-09-14 1976-03-22 Fuji Electrochemical Co Ltd Shuhasujibunkatsutajudensohoshiki

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5133512A (ja) * 1974-09-14 1976-03-22 Fuji Electrochemical Co Ltd Shuhasujibunkatsutajudensohoshiki

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS623879A (ja) * 1985-06-28 1987-01-09 Sumitomo Metal Ind Ltd 電縫鋼管の製造方法
JPH02160189A (ja) * 1988-12-09 1990-06-20 Sumitomo Metal Ind Ltd 電縫管の製造方法
JPH03133575A (ja) * 1989-07-24 1991-06-06 Kawasaki Heavy Ind Ltd 高周波予熱と高密度エネルギー溶融溶接法を組合わせた金属溶接管の連続製造法と装置
US5961748A (en) * 1995-08-09 1999-10-05 Nkk Corporation Laser-welded steel pipe
US6140601A (en) * 1995-08-09 2000-10-31 Nkk Corporation Laser-welded steel pipe and method therefor
CN1068268C (zh) * 1997-07-09 2001-07-11 上海康德工程技术研究所 一种低合金结构钢焊接钢管的方法
WO2009060764A1 (ja) * 2007-11-05 2009-05-14 Nippon Steel Corporation 鋼管材の溶接部加熱装置及び方法
JP2009113070A (ja) * 2007-11-05 2009-05-28 Nippon Steel Corp 鋼管材の溶接部加熱装置及び方法
US8383978B2 (en) 2007-11-05 2013-02-26 Nippon Steel Corporation Steel pipe material weld zone heating apparatus and method

Also Published As

Publication number Publication date
JPH0248349B2 (cs) 1990-10-24

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