[go: up one dir, main page]

AR122212A1 - Acero inoxidable de doble fase y tubo sin costura de acero inoxidable de doble fase - Google Patents

Acero inoxidable de doble fase y tubo sin costura de acero inoxidable de doble fase

Info

Publication number
AR122212A1
AR122212A1 ARP210101464A ARP210101464A AR122212A1 AR 122212 A1 AR122212 A1 AR 122212A1 AR P210101464 A ARP210101464 A AR P210101464A AR P210101464 A ARP210101464 A AR P210101464A AR 122212 A1 AR122212 A1 AR 122212A1
Authority
AR
Argentina
Prior art keywords
stainless steel
dual
phase stainless
phase
double
Prior art date
Application number
ARP210101464A
Other languages
English (en)
Inventor
Kazuki Fujimura
Shunsuke Sasaki
Masao Yuga
Original Assignee
Jfe 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 Jfe Steel Corp filed Critical Jfe Steel Corp
Publication of AR122212A1 publication Critical patent/AR122212A1/es

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/54Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D7/00Modifying the physical properties of iron or steel by deformation
    • C21D7/02Modifying the physical properties of iron or steel by deformation by cold working
    • C21D7/10Modifying the physical properties of iron or steel by deformation by cold working of the whole cross-section, e.g. of concrete reinforcing bars
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/08Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/001Ferrous alloys, e.g. steel alloys containing N
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/002Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/004Very low carbon steels, i.e. having a carbon content of less than 0,01%
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/005Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/008Ferrous alloys, e.g. steel alloys containing tin
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/02Ferrous alloys, e.g. steel alloys containing silicon
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/04Ferrous alloys, e.g. steel alloys containing manganese
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/06Ferrous alloys, e.g. steel alloys containing aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/44Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/50Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/60Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/005Manufacture of stainless steel
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04Removing impurities by adding a treating agent
    • C21C7/06Deoxidising, e.g. killing
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/10Handling in a vacuum
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/02Hardening articles or materials formed by forging or rolling, with no further heating beyond that required for the formation
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D2211/00Microstructure comprising significant phases
    • C21D2211/001Austenite
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D2211/00Microstructure comprising significant phases
    • C21D2211/004Dispersions; Precipitations
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D2211/00Microstructure comprising significant phases
    • C21D2211/005Ferrite
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D6/00Heat treatment of ferrous alloys
    • C21D6/004Heat treatment of ferrous alloys containing Cr and Ni
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/10Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling

Landscapes

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

Abstract

Se proporcionan un acero inoxidable de doble fase y un tubo sin costura de acero inoxidable de doble fase que tienen alta resistencia, alta tenacidad y una resistencia deseable a la corrosión. Un acero inoxidable de doble fase o un tubo sin costura de acero de doble fase de la presente invención tiene una composición que incluye, en % en masa, C: entre 0,002% y 0,03%, Si: entre 0,05% y 1,0%, Mn: entre 0,10% y 1,5%, P: 0,040% o menos, S: entre 0,0005% y 0,020%, Cr: entre 20,0% y 28,0%, Ni: entre 4,0% y 10,0%, Mo: entre 2,0% y 5,0%, Al: entre 0,001% y 0,05%, y N: entre 0,06% y 0,35%, y en donde el resto es Fe e impurezas incidentales, el acero inoxidable de doble fase o el tubo sin costura de acero inoxidable de doble fase tiene una microestructura que contiene entre 20% y 70% de fase austenítica y entre 30% y 80% de fase ferrítica en volumen, el acero inoxidable de doble fase o el tubo sin costura de acero inoxidable de doble fase tiene un límite elástico, YS, de 448 MPa o más, y contiene inclusiones de óxido, en donde las inclusiones de óxido que tienen un diámetro de partícula promedio de 1 mm o más, tienen una densidad numérica de 15/mm² o menos, y como máximo el 50% en masa de las inclusiones de óxido que tienen un diámetro de partícula promedio de 1 mm o más son inclusiones de óxido con contenido de aluminio.
ARP210101464A 2020-06-02 2021-05-31 Acero inoxidable de doble fase y tubo sin costura de acero inoxidable de doble fase AR122212A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2020095917 2020-06-02

Publications (1)

Publication Number Publication Date
AR122212A1 true AR122212A1 (es) 2022-08-24

Family

ID=78830912

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP210101464A AR122212A1 (es) 2020-06-02 2021-05-31 Acero inoxidable de doble fase y tubo sin costura de acero inoxidable de doble fase

Country Status (7)

Country Link
US (1) US12509752B2 (es)
EP (1) EP4137590B1 (es)
JP (1) JP7004118B1 (es)
CN (1) CN115552049B (es)
AR (1) AR122212A1 (es)
MX (1) MX2022014264A (es)
WO (1) WO2021246118A1 (es)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024085155A1 (ja) 2022-10-18 2024-04-25 日本製鉄株式会社 二相ステンレス鋼材
CN121335999A (zh) * 2023-07-18 2026-01-13 杰富意钢铁株式会社 双相不锈钢及不锈钢无缝钢管
CN117363994A (zh) * 2023-11-15 2024-01-09 鞍钢联众(广州)不锈钢有限公司 一种不锈钢轮毂材料及轮毂生产方法
WO2025164106A1 (ja) * 2024-01-31 2025-08-07 日本製鉄株式会社 二相ステンレス鋼材
JP7695602B1 (ja) * 2024-01-31 2025-06-19 日本製鉄株式会社 二相ステンレス鋼材
WO2026004524A1 (ja) * 2024-06-25 2026-01-02 Jfeスチール株式会社 ステンレス鋼およびステンレス継目無鋼管
WO2026004523A1 (ja) * 2024-06-25 2026-01-02 Jfeスチール株式会社 ステンレス鋼およびステンレス継目無鋼管

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03291358A (ja) 1990-04-09 1991-12-20 Sumitomo Metal Ind Ltd 靭性と熱間加工性に優れた二相ステンレス鋼およびその製造方法
JP2500162B2 (ja) 1991-11-11 1996-05-29 住友金属工業株式会社 耐食性に優れた高強度二相ステンレス鋼
JPH08170153A (ja) 1994-12-19 1996-07-02 Sumitomo Metal Ind Ltd 高耐食性2相ステンレス鋼
JP2005036313A (ja) * 2003-06-30 2005-02-10 Sumitomo Metal Ind Ltd 二相ステンレス鋼
EP1561834B1 (en) 2003-08-07 2011-04-20 Sumitomo Metal Industries, Ltd. Duplex stainless steel and method for production thereof
WO2008117680A1 (ja) * 2007-03-26 2008-10-02 Sumitomo Metal Industries, Ltd. 坑井内で拡管される拡管用油井管及び拡管用油井管に用いられる2相ステンレス鋼
JP5640762B2 (ja) * 2011-01-20 2014-12-17 Jfeスチール株式会社 油井用高強度マルテンサイト系ステンレス継目無鋼管
JP5924256B2 (ja) 2012-06-21 2016-05-25 Jfeスチール株式会社 耐食性に優れた油井用高強度ステンレス鋼継目無管およびその製造方法
JP5883761B2 (ja) * 2012-10-05 2016-03-15 株式会社神戸製鋼所 二相系ステンレス鋼材および二相系ステンレス鋼管
JP5967066B2 (ja) 2012-12-21 2016-08-10 Jfeスチール株式会社 耐食性に優れた油井用高強度ステンレス継目無鋼管およびその製造方法
JP6327633B2 (ja) * 2013-09-19 2018-05-23 セイコーインスツル株式会社 二相ステンレス鋼からなるダイヤフラム
JP6303851B2 (ja) * 2014-06-18 2018-04-04 新日鐵住金株式会社 二相ステンレス鋼管
WO2016079920A1 (ja) 2014-11-19 2016-05-26 Jfeスチール株式会社 油井用高強度ステンレス継目無鋼管
WO2018020886A1 (ja) 2016-07-27 2018-02-01 Jfeスチール株式会社 油井用高強度ステンレス継目無鋼管およびその製造方法
EP3508596B1 (en) 2016-09-02 2022-03-30 JFE Steel Corporation Dual-phase stainless seamless steel pipe and method of production thereof
JP6369662B1 (ja) 2017-01-10 2018-08-08 Jfeスチール株式会社 二相ステンレス鋼およびその製造方法
WO2018155041A1 (ja) 2017-02-24 2018-08-30 Jfeスチール株式会社 油井用高強度ステンレス継目無鋼管およびその製造方法

Also Published As

Publication number Publication date
EP4137590B1 (en) 2026-01-21
US20230151469A1 (en) 2023-05-18
JPWO2021246118A1 (es) 2021-12-09
EP4137590A4 (en) 2023-10-25
MX2022014264A (es) 2022-12-07
CN115552049A (zh) 2022-12-30
CN115552049B (zh) 2023-10-20
JP7004118B1 (ja) 2022-02-04
EP4137590A1 (en) 2023-02-22
WO2021246118A1 (ja) 2021-12-09
BR112022022689A2 (pt) 2023-01-31
US12509752B2 (en) 2025-12-30

Similar Documents

Publication Publication Date Title
AR122212A1 (es) Acero inoxidable de doble fase y tubo sin costura de acero inoxidable de doble fase
MX2022003878A (es) Tubo de acero inoxidable sin soldadura y metodo para fabricar el mismo.
MX2021011560A (es) Tuberia de acero inoxidable sin costura.
MX2019008377A (es) Tubo de acero inoxidable sin soldadura de alta resistencia y metodo de fabricacion del mismo.
ES2581335T3 (es) Material de acero de alta resistencia que tiene una dureza sobresaliente a temperatura ultrabaja y método de producción del mismo
MX2018009160A (es) Lamina de acero laminada en caliente de alta resistencia para tubo de acero soldado con resistencia electrica y metodo de fabricacion de la misma.
AR121690A1 (es) Tubo sin costura, de acero inoxidable de alta resistencia para materiales tubulares para pozos de petróleo y su método de fabricación
BRPI0614604B1 (pt) tubo sem costura soldável e processo para produzir o mesmo
MY158405A (en) Seamless steel pipe for steam injection and method for manufacturing the same
MX2023010534A (es) Tubo de acero inoxidable duplex y metodo para fabricar el mismo.
MX2022011507A (es) Tubo de acero inoxidable sin soldadura y metodo para fabricar un tubo de acero inoxidable sin soldadura.
AR113183A1 (es) Tubo sin costura de acero inoxidable martensítico para materiales tubulares para pozos de petróleo, y método para su fabricación
RU2016137919A (ru) Стальная труба для топливопровода высокого давления и использующий ее топливопровод высокого давления
AR115169A1 (es) Tubo sin costuras de acero inoxidable martensítico para la industria del petróleo y un método para fabricar el mismo
MY198152A (en) Solid Wire for Gas Metal Arc Welding
AR113185A1 (es) Tubo sin costura de acero inoxidable martensítico para la industria del petróleo y método para fabricarlo
AR107719A1 (es) Tubos de acero sin costura de alta resistencia de baja aleación para productos tubulares para la industria petrolera
AR115168A1 (es) Tubo sin costura de acero inoxidable martensítico para materiales tubulares para pozos de petróleo, y su método de fabricación
MY191470A (en) Seamless steel pipe and method for producing same
MX2025011392A (es) Material de acero
AR070624A1 (es) Acero de baja aleacion altamente resistente para tubos sin costura con excelente soldabilidad y resistencia a la corrosion interna por fisuras y tubo de acero de baja aleacion.
RU2016104928A (ru) Состав коррозионно-стойкого покрытия для защиты технологического нефтехимического оборудования
MX2022000428A (es) Tubo de acero sin soldadura que tiene una resistencia deseable a la corrosion por punto de condensacion de acido sulfurico y metodo para fabricar el mismo.
AR119362A1 (es) Tubo de acero sin costura que tiene una resistencia deseable a la corrosión por punto de rocío del ácido sulfúrico, y su método de fabricación
AR127156A1 (es) Un tubo de acero inoxidable sin costuras de alta resistencia para pozos petrolíferos y un método para fabricarlo

Legal Events

Date Code Title Description
FG Grant, registration