JPS57140823A - Production of high tensile electric welded steel pipe of superior toughness - Google Patents

Production of high tensile electric welded steel pipe of superior toughness

Info

Publication number
JPS57140823A
JPS57140823A JP2598581A JP2598581A JPS57140823A JP S57140823 A JPS57140823 A JP S57140823A JP 2598581 A JP2598581 A JP 2598581A JP 2598581 A JP2598581 A JP 2598581A JP S57140823 A JPS57140823 A JP S57140823A
Authority
JP
Japan
Prior art keywords
steel pipe
welded steel
electric welded
pipe
production
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
JP2598581A
Other languages
Japanese (ja)
Inventor
Noboru Okamoto
Fumihiro Oonishi
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.)
JFE Steel Corp
Original Assignee
Kawasaki Steel 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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP2598581A priority Critical patent/JPS57140823A/en
Publication of JPS57140823A publication Critical patent/JPS57140823A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/10—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

PURPOSE:To produce an electric welded steel pipe of superior tensile strength and low temp. toughness by adding Ti of a min. required amt. necessary for fixing N to killed steel of specific composition and performing hot rolling finishing, pipe making and cooling under specific conditions. CONSTITUTION:A steel material contg., by weight ratio, 0.03-0.20% C, <=0.35% Si, 0.90-2.00% Mn, <=0.030% P, <=0.020% S, 0.010-0.080% Al, and further 1 or 2 kinds of 0.010-0.150% Nb, and 0.010-0.150% V, and 0.010-0.030% Ti within a Ti/N>=3.5 range, and if necessary, contg. 1 or >=2 kinds of <=0.50% Ni and <=0.50% Cr and <=0.50% Cu, and the balance consisting of Fe and unavoidable impurities is hot-rolled at 800-850 deg.C finishing temps. Thence, it is made into a pipe at <=550 deg.C coiling temp., and is cooled at 50 deg.C/sec cooling rate after welding and annealing. Thereby, the electric welded steel pipe of strength at about >=60kg/mm.<2> tensile strength is obtained.
JP2598581A 1981-02-24 1981-02-24 Production of high tensile electric welded steel pipe of superior toughness Pending JPS57140823A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2598581A JPS57140823A (en) 1981-02-24 1981-02-24 Production of high tensile electric welded steel pipe of superior toughness

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2598581A JPS57140823A (en) 1981-02-24 1981-02-24 Production of high tensile electric welded steel pipe of superior toughness

Publications (1)

Publication Number Publication Date
JPS57140823A true JPS57140823A (en) 1982-08-31

Family

ID=12181001

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2598581A Pending JPS57140823A (en) 1981-02-24 1981-02-24 Production of high tensile electric welded steel pipe of superior toughness

Country Status (1)

Country Link
JP (1) JPS57140823A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59197519A (en) * 1983-04-20 1984-11-09 Nippon Steel Corp Manufacture of electrical welded oil well steel pipe efficient in low temperature toughness
US4804021A (en) * 1986-11-28 1989-02-14 Nippon Steel Corporation Highly tough ERW steel pipe with distinguished sour resistance
KR100338702B1 (en) * 1997-11-11 2002-09-19 주식회사 포스코 METHOD FOR MANUFACTURING 60kg CLASS COLLED ROLLING STEEL WITH HIGH DUCTILITY

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59197519A (en) * 1983-04-20 1984-11-09 Nippon Steel Corp Manufacture of electrical welded oil well steel pipe efficient in low temperature toughness
US4804021A (en) * 1986-11-28 1989-02-14 Nippon Steel Corporation Highly tough ERW steel pipe with distinguished sour resistance
KR100338702B1 (en) * 1997-11-11 2002-09-19 주식회사 포스코 METHOD FOR MANUFACTURING 60kg CLASS COLLED ROLLING STEEL WITH HIGH DUCTILITY

Similar Documents

Publication Publication Date Title
JPS57198216A (en) Manufacture of high-strength rail
JPS5687626A (en) Production of high strength low yield ratio high ductility composite structure steel plate of superior workability and high artificial age hardening characteristic after working
JPS57137452A (en) Hot rolled high tensile steel plate having composite structure and its manufacture
EP0181583A3 (en) Method of making a dual-phase hot-rolled steel strip
JPS5792129A (en) Production of nonrefined high toughness steel
JPS57140823A (en) Production of high tensile electric welded steel pipe of superior toughness
ES536828A0 (en) PRODUCTION METHOD OF A SUBSTANTIALLY STAINLESS STEEL AUSTENITIC STEEL FOR WORK
JPS57134518A (en) Production of high-toughness high-tensile steel
JPS5644723A (en) Manufacture of high tensile strength steel sheet having excellent workability
JPS57104623A (en) Manufacture of high strength and high toughness steel pipe of large diameter
JPS54155920A (en) Manufacture of hot rolled high tensile steel plate
JPS5747832A (en) Production of high strength cold rolled steel plate of superior deep drawability and working embrittleness resistance
JPS5457418A (en) Manufacture of high toughness, refined steel
JPS56119723A (en) Manufacture of nonrefined high tensile steel with superior low temperature toughness
JPS57104628A (en) Production of high-strength stainless steel plate
JPS5726125A (en) Production of hot rolled steel plate of superior longitudinal crack resistance having low yield ratio and high tensile strength
JPS572836A (en) Production of high strength steel of superior weldability
JPS5741325A (en) Manufacture of hot-rolled high-tensile steel plate with superior workability
JPS5677333A (en) Production of composite structure type high ductility high strength cold-rolled steel plate
JPS55104427A (en) Production of steel for low temperature
JPS57131325A (en) Production of low yield ratio, high tensile cold rolled steel plate having good gamma value
JPS57116767A (en) High tensile zinc plated steel plate of good workability and its production
JPS57114612A (en) Production of hot rolled high tensile steel plate for cold working
JPS5696019A (en) Production of cold-rolled sheet steel having low yield ratio, high ductility, high strength
JPS57177927A (en) Manufacture of high tensile steel plate with superior workability