JPS55122853A - Welded steel tube having superior butted portion toughness - Google Patents

Welded steel tube having superior butted portion toughness

Info

Publication number
JPS55122853A
JPS55122853A JP3090879A JP3090879A JPS55122853A JP S55122853 A JPS55122853 A JP S55122853A JP 3090879 A JP3090879 A JP 3090879A JP 3090879 A JP3090879 A JP 3090879A JP S55122853 A JPS55122853 A JP S55122853A
Authority
JP
Japan
Prior art keywords
steel tube
welded steel
superior
toughness
butted portion
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
JP3090879A
Other languages
Japanese (ja)
Other versions
JPS5853707B2 (en
Inventor
Yoji Yamaguchi
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 JP54030908A priority Critical patent/JPS5853707B2/en
Publication of JPS55122853A publication Critical patent/JPS55122853A/en
Publication of JPS5853707B2 publication Critical patent/JPS5853707B2/en
Expired legal-status Critical Current

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Abstract

PURPOSE: To provide high toughness to the weld zone of an electric welded steel tube consisting of a respectively specified ratio of C, Si, Mn, P, S and sol. Al, N esp. 0.0030% or less and the balance Fe and manufactured esp. by high or low frequency electric resistance welding.
CONSTITUTION: This welded steel tube is made of carbon steel consisting of C≤ 0.3%, Si≤1.00%, Mn 0.2W2.00%, P≤0.05%, S≤0.05%, sol. Al 0.01W0.10%, N≤0.0030%, and the balance Fe and inevitable impurities. Nb 0.01W0.15% and/or V 0.01W0.20% may be added to the compsn. to further enhance the strength. By controlling the N content of the steel to 0.0030% or less a toughness lowering due to the influence of residual strain and working strain in the manufacturing process and the influence of heat and working strain in use can be minimized.
COPYRIGHT: (C)1980,JPO&Japio
JP54030908A 1979-03-15 1979-03-15 ERW steel pipe with excellent butt toughness Expired JPS5853707B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54030908A JPS5853707B2 (en) 1979-03-15 1979-03-15 ERW steel pipe with excellent butt toughness

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54030908A JPS5853707B2 (en) 1979-03-15 1979-03-15 ERW steel pipe with excellent butt toughness

Publications (2)

Publication Number Publication Date
JPS55122853A true JPS55122853A (en) 1980-09-20
JPS5853707B2 JPS5853707B2 (en) 1983-11-30

Family

ID=12316803

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54030908A Expired JPS5853707B2 (en) 1979-03-15 1979-03-15 ERW steel pipe with excellent butt toughness

Country Status (1)

Country Link
JP (1) JPS5853707B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6418015U (en) * 1987-07-21 1989-01-30

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS502847A (en) * 1973-05-10 1975-01-13
JPS50139013A (en) * 1974-04-27 1975-11-06

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS502847A (en) * 1973-05-10 1975-01-13
JPS50139013A (en) * 1974-04-27 1975-11-06

Also Published As

Publication number Publication date
JPS5853707B2 (en) 1983-11-30

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