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EA200870436A1 - LOW-ALLOYED STEEL, SEAMLESS STEEL PIPES OF OIL-FIELD SORTAGES AND METHOD OF MANUFACTURING SEAMLESS STEEL PIPES - Google Patents

LOW-ALLOYED STEEL, SEAMLESS STEEL PIPES OF OIL-FIELD SORTAGES AND METHOD OF MANUFACTURING SEAMLESS STEEL PIPES

Info

Publication number
EA200870436A1
EA200870436A1 EA200870436A EA200870436A EA200870436A1 EA 200870436 A1 EA200870436 A1 EA 200870436A1 EA 200870436 A EA200870436 A EA 200870436A EA 200870436 A EA200870436 A EA 200870436A EA 200870436 A1 EA200870436 A1 EA 200870436A1
Authority
EA
Eurasian Patent Office
Prior art keywords
less
steel pipes
seamless steel
sortages
oil
Prior art date
Application number
EA200870436A
Other languages
Russian (ru)
Other versions
EA012256B1 (en
Inventor
Куниаки Томомацу
Томохико ОМУРА
Юдзи АРАИ
Тосихару Абе
Original Assignee
Сумитомо Метал Индастриз, Лтд.
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 Сумитомо Метал Индастриз, Лтд. filed Critical Сумитомо Метал Индастриз, Лтд.
Publication of EA200870436A1 publication Critical patent/EA200870436A1/en
Publication of EA012256B1 publication Critical patent/EA012256B1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/002—Heat treatment of ferrous alloys containing Cr
    • 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
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226—Hot rolling
    • 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
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
    • C21D9/14—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes wear-resistant or pressure-resistant pipes
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Articles (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

A low alloy steel comprising, by mass %, C : 0.10 to 0.20%, Si : 0.05 to 1.0%, Mn : 0.05 to 1.5%, Cr : 1.0 to 2.0%, Mo : 0.05 to 2.0%, Al : 0.10 % or less and Ti : 0.002 to 0.05%, and with a Ceq value obtained by the following formula (1) of 0.65 or more, with the balance being Fe and impurities, wherein in the impurities, P is 0.025% or less, S is 0.010% or less, N is 0.007% or less, and B is less than 0.0003%, and the number per unit area of M 23 C 6 type precipitates (M: a metal element) whose grain diameter is 1 µm or more is 0.1/mm 2 or less. This invention provides a low alloy steel possessing both hardenability and toughness and improves the resistance to sulfide stress corrosion cracking. Ceq = C + Mn / 6 + Cr + Mo + V / 5 where C, Mn, Cr, Mo and V in the formula (1) denote the mass % of respective elements.
EA200870436A 2007-03-30 2008-03-28 Low-alloy steel, seamless steel pipe for oil well and process for producing seamless steel pipe EA012256B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007092144 2007-03-30
PCT/JP2008/056113 WO2008123422A1 (en) 2007-03-30 2008-03-28 Low-alloy steel, seamless steel pipe for oil well, and process for producing seamless steel pipe

Publications (2)

Publication Number Publication Date
EA200870436A1 true EA200870436A1 (en) 2009-02-27
EA012256B1 EA012256B1 (en) 2009-08-28

Family

ID=39830907

Family Applications (1)

Application Number Title Priority Date Filing Date
EA200870436A EA012256B1 (en) 2007-03-30 2008-03-28 Low-alloy steel, seamless steel pipe for oil well and process for producing seamless steel pipe

Country Status (13)

Country Link
US (1) US20090047166A1 (en)
EP (1) EP2133442B1 (en)
JP (1) JP4305681B2 (en)
CN (1) CN101542002B (en)
AT (1) ATE543922T1 (en)
AU (1) AU2008221597B8 (en)
BR (1) BRPI0802627B1 (en)
CA (1) CA2650208A1 (en)
EA (1) EA012256B1 (en)
MX (1) MX2008016193A (en)
MY (1) MY145393A (en)
UA (1) UA90947C2 (en)
WO (1) WO2008123422A1 (en)

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CN103834868B (en) * 2014-02-21 2017-01-25 内蒙古包钢钢联股份有限公司 Preparation method of high-strength high-toughness H2S/CO2 corrosion resistant oil tube
US20160305192A1 (en) 2015-04-14 2016-10-20 Tenaris Connections Limited Ultra-fine grained steels having corrosion-fatigue resistance
EP3460086B1 (en) 2016-05-20 2020-11-04 Nippon Steel Corporation Seamless steel pipe and method for producing same
US11124852B2 (en) 2016-08-12 2021-09-21 Tenaris Coiled Tubes, Llc Method and system for manufacturing coiled tubing
CN106244934B (en) * 2016-08-24 2017-12-22 宁波乾豪金属制品有限公司 A kind of hinge
CN106222575B (en) * 2016-08-24 2017-12-22 宁波乾豪金属制品有限公司 A kind of corrosion resistant hinge
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CN107385350A (en) * 2017-06-21 2017-11-24 内蒙古包钢钢联股份有限公司 Marine drilling platform containing rare earth spud leg 700MPa seamless steel pipes and its production method
CN107217201A (en) * 2017-06-27 2017-09-29 包头钢铁（集团）有限责任公司 A kind of marine drilling platform containing rare earth spud leg 600MPa seamless steel pipes and its production method
AR118070A1 (en) * 2019-02-15 2021-09-15 Nippon Steel Corp STEEL MATERIAL SUITABLE FOR USE IN AGRI ENVIRONMENT
AR118071A1 (en) * 2019-02-15 2021-09-15 Nippon Steel Corp STEEL MATERIAL SUITABLE FOR USE IN AGRI ENVIRONMENT
EP4023778B1 (en) 2019-08-27 2024-09-18 Nippon Steel Corporation Steel material suitable for use in sour environment
US20230366070A1 (en) 2020-11-11 2023-11-16 Nippon Steel Corporation Steel material suitable for use in sour environment
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Also Published As

Publication number Publication date
CN101542002B (en) 2016-03-30
JPWO2008123422A1 (en) 2010-07-15
CN101542002A (en) 2009-09-23
ATE543922T1 (en) 2012-02-15
BRPI0802627A2 (en) 2011-08-30
EP2133442A1 (en) 2009-12-16
UA90947C2 (en) 2010-06-10
WO2008123422A1 (en) 2008-10-16
AU2008221597B8 (en) 2010-04-22
CA2650208A1 (en) 2008-10-16
AU2008221597B2 (en) 2010-04-01
AU2008221597A1 (en) 2008-10-16
EA012256B1 (en) 2009-08-28
MX2008016193A (en) 2009-04-15
JP4305681B2 (en) 2009-07-29
EP2133442A4 (en) 2010-04-28
US20090047166A1 (en) 2009-02-19
EP2133442B1 (en) 2012-02-01
BRPI0802627B1 (en) 2017-07-18
MY145393A (en) 2012-01-31

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