EP4282990A4 - Duplex stainless steel pipe and method for producing the same - Google Patents

Duplex stainless steel pipe and method for producing the same

Info

Publication number: EP4282990A4
Authority: EP; European Patent Office
Prior art keywords: producing; same; stainless steel; steel pipe; duplex stainless
Prior art date: 2021-03-17
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

EP22770955.7A

Other languages

German (de)

French (fr)

Other versions

EP4282990A1 (en

Inventor

Shunsuke Sasaki

Seigo Goto

Masao Yuga

Tatsuro Katsumura

Hideo Kijima

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

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.)

2021-03-17

Filing date

2022-02-09

Publication date

2025-07-23

2022-02-09 Application filed by JFE Steel Corp filed Critical JFE Steel Corp

2023-11-29 Publication of EP4282990A1 publication Critical patent/EP4282990A1/en

2025-07-23 Publication of EP4282990A4 publication Critical patent/EP4282990A4/en

Status Pending legal-status Critical Current

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
- 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
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- 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
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
- 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
- C21D6/005—Heat treatment of ferrous alloys containing Mn
- 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
- C21D6/008—Heat treatment of ferrous alloys containing Si
- 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
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
- C21D7/10—Modifying the physical properties of iron or steel by deformation by cold working of the whole cross-section, e.g. of concrete reinforcing bars
- 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
- C21D8/105—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies of ferrous alloys
- 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
- 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
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
- 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
- C22C38/004—Very low carbon steels, i.e. having a carbon content of less than 0,01%
- 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
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
- 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
- C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
- 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
- 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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
- 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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of 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
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/001—Austenite
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/005—Ferrite

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)
Manufacturing & Machinery (AREA)
Heat Treatment Of Steel (AREA)
Heat Treatment Of Articles (AREA)
Laminated Bodies (AREA)
Metal Extraction Processes (AREA)

EP22770955.7A 2021-03-17 2022-02-09 Duplex stainless steel pipe and method for producing the same Pending EP4282990A4 (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
JP2021043498		2021-03-17
PCT/JP2022/005176 WO2022196196A1 (en)	2021-03-17	2022-02-09	Duplex stainless steel pipe and method for manufacturing same

Publications (2)

Publication Number	Publication Date
EP4282990A1 EP4282990A1 (en)	2023-11-29
EP4282990A4 true EP4282990A4 (en)	2025-07-23

Family

ID=83322225

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP22770955.7A Pending EP4282990A4 (en)	2021-03-17	2022-02-09	Duplex stainless steel pipe and method for producing the same

Country Status (11)

Country	Link
US (1)	US20240309480A1 (en)
EP (1)	EP4282990A4 (en)
JP (1)	JP7173411B1 (en)
CN (1)	CN116917523B (en)
AR (1)	AR125543A1 (en)
AU (1)	AU2022240057B2 (en)
BR (1)	BR112023017868A2 (en)
CA (1)	CA3208799A1 (en)
MX (1)	MX2023010534A (en)
SA (1)	SA523450566B1 (en)
WO (1)	WO2022196196A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP7636704B2 (en) *	2023-03-10	2025-02-27	日本製鉄株式会社	Hot stamped compact
WO2024195730A1 (en) *	2023-03-17	2024-09-26	日本製鉄株式会社	Duplex stainless steel pipe
CN120936734A (en) *	2023-03-17	2025-11-11	日本制铁株式会社	Duplex stainless steel pipe
JP7498416B1 (en) *	2023-03-28	2024-06-12	日本製鉄株式会社	Cr-Ni alloy tube
JPWO2025018103A1 (en) *	2023-07-18	2025-01-23
CN119640161A (en) *	2025-02-13	2025-03-18	湖南旺坤管业有限公司	Material for producing low-carbon high-molybdenum stainless steel pipeline and preparation method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP3467132A1 (en) *	2016-06-01	2019-04-10	Nippon Steel & Sumitomo Metal Corporation	Duplex stainless steel and duplex stainless steel manufacturing method
CA3108758A1 (en) *	2018-08-31	2020-03-05	Jfe Steel Corporation	Duplex stainless steel seamless pipe and method for manufacturing same
WO2020110597A1 (en) *	2018-11-30	2020-06-04	Ｊｆｅスチール株式会社	Duplex stainless seamless steel pipe and method for manufacturing same

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS57194213A (en)	1981-05-25	1982-11-29	Nippon Kokan Kk <Nkk>	Production of abrasion resistant steel pipe
JPS63290616A (en)	1987-05-22	1988-11-28	Sumitomo Metal Ind Ltd	Clad steel pipe having excellent wear and corrosion resistance
JPS6415323A (en)	1987-07-08	1989-01-19	Kawasaki Steel Co	Production of wear resistant steel pipe
JP3697853B2 (en) *	1997-09-09	2005-09-21	Ｊｆｅスチール株式会社	Stainless hot rolled steel sheet excellent in corrosion resistance and method for producing the same
WO2010082395A1 (en) *	2009-01-19	2010-07-22	住友金属工業株式会社	Process for production of duplex stainless steel pipe
WO2012004464A1 (en) *	2010-07-07	2012-01-12	Arcelormittal Investigación Y Desarrollo Sl	Austenitic-ferritic stainless steel having improved machinability
JP6341125B2 (en) *	2015-03-17	2018-06-13	Ｊｆｅスチール株式会社	Method for producing duplex stainless steel pipe
JP6792951B2 (en) *	2015-03-30	2020-12-02	日鉄ステンレス株式会社	Duplex stainless steel for ozone-containing water
JP6805574B2 (en) *	2015-07-10	2020-12-23	日本製鉄株式会社	Austenitic heat resistant steel and austenitic heat transfer member
CA3028947A1 (en) *	2016-06-29	2018-01-04	Nippon Steel & Sumitomo Metal Corporation	Heat resistant ferritic steel and ferritic heat transfer member
US11566301B2 (en) *	2016-09-02	2023-01-31	Jfe Steel Corporation	Dual-phase stainless steel, and method of production thereof
JP6946737B2 (en) *	2017-05-18	2021-10-06	日本製鉄株式会社	Duplex stainless steel and its manufacturing method

2022
- 2022-02-09 US US18/279,945 patent/US20240309480A1/en active Pending
- 2022-02-09 BR BR112023017868A patent/BR112023017868A2/en unknown
- 2022-02-09 EP EP22770955.7A patent/EP4282990A4/en active Pending
- 2022-02-09 CA CA3208799A patent/CA3208799A1/en active Pending
- 2022-02-09 AU AU2022240057A patent/AU2022240057B2/en active Active
- 2022-02-09 MX MX2023010534A patent/MX2023010534A/en unknown
- 2022-02-09 CN CN202280018568.9A patent/CN116917523B/en active Active
- 2022-02-09 WO PCT/JP2022/005176 patent/WO2022196196A1/en not_active Ceased
- 2022-02-09 JP JP2022531457A patent/JP7173411B1/en active Active
- 2022-03-16 AR ARP220100597A patent/AR125543A1/en unknown
2023
- 2023-09-06 SA SA523450566A patent/SA523450566B1/en unknown

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP3467132A1 (en) *	2016-06-01	2019-04-10	Nippon Steel & Sumitomo Metal Corporation	Duplex stainless steel and duplex stainless steel manufacturing method
CA3108758A1 (en) *	2018-08-31	2020-03-05	Jfe Steel Corporation	Duplex stainless steel seamless pipe and method for manufacturing same
WO2020110597A1 (en) *	2018-11-30	2020-06-04	Ｊｆｅスチール株式会社	Duplex stainless seamless steel pipe and method for manufacturing same
EP3854890A1 (en) *	2018-11-30	2021-07-28	JFE Steel Corporation	Duplex stainless seamless steel pipe and method for manufacturing same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2022196196A1 *

Also Published As

Publication number	Publication date
CA3208799A1 (en)	2022-09-22
AU2022240057A1 (en)	2023-08-17
MX2023010534A (en)	2023-09-19
EP4282990A1 (en)	2023-11-29
AR125543A1 (en)	2023-07-26
BR112023017868A2 (en)	2023-10-10
WO2022196196A1 (en)	2022-09-22
JPWO2022196196A1 (en)	2022-09-22
SA523450566B1 (en)	2025-06-11
CN116917523A (en)	2023-10-20
AU2022240057B2 (en)	2024-11-14
US20240309480A1 (en)	2024-09-19
CN116917523B (en)	2025-08-29
JP7173411B1 (en)	2022-11-16

Publication	Publication Date	Title
EP4282990A4 (en)	2025-07-23	Duplex stainless steel pipe and method for producing the same
EP3744499C0 (en)	2023-08-23	NON-METALLIC FLEXIBLE PIPE AND METHOD FOR PRODUCING SAME
EP4183892A4 (en)	2023-12-20	STEEL SHEET AND METHOD FOR PRODUCING THE SAME
EP4350016A4 (en)	2024-10-23	STEEL SHEET, ELEMENT, METHOD FOR PRODUCING THE STEEL SHEET AND METHOD FOR PRODUCING SAID ELEMENT
EP3854890A4 (en)	2022-01-26	SEAMLESS DUPLEX STAINLESS STEEL PIPE AND PROCESS FOR ITS MANUFACTURE
EP3910083A4 (en)	2022-06-01	STEEL SHEET AND METHOD OF PRODUCTION THEREOF
EP4382634A4 (en)	2024-11-20	STEEL SHEET AND METHOD FOR THE PRODUCTION THEREOF
EP4269631A4 (en)	2025-07-30	STEEL SHEET AND METHOD FOR THE PRODUCTION THEREOF
EP3929315A4 (en)	2024-05-08	HOT-ROLLED STEEL SHEET AND METHOD FOR PRODUCING SAME
EP3954790A4 (en)	2023-07-26	STEEL SHEET AND METHOD OF PRODUCTION THEREOF
EP4279618A4 (en)	2025-10-15	MARTENSITE-BASED STAINLESS STEEL MATERIAL AND METHOD FOR PRODUCING THE SAME
EP4151762A4 (en)	2023-10-04	STEEL SHEET, ELEMENT AND METHOD FOR PRODUCING THEREOF
EP4386098A4 (en)	2024-12-25	HIGH STRENGTH STEEL SHEET, HIGH STRENGTH CLAD STEEL SHEET, METHOD FOR PRODUCING THE SAME AND ELEMENT
EP3778971A4 (en)	2021-11-24	STEEL PIPE AND METHOD OF MANUFACTURING A STEEL PIPE
EP4043597A4 (en)	2022-11-09	FERRITIC STAINLESS STEEL SHEET, METHOD OF MANUFACTURE THEREOF AND FERRITIC STAINLESS STEEL PART
EP3960885C0 (en)	2024-04-10	SEAMLESS DUPLEX STAINLESS STEEL TUBE AND METHOD FOR PRODUCING A SEAMLESS DUPLEX STAINLESS STEEL TUBE
EP4186987A4 (en)	2023-09-27	STEEL SHEET AND METHOD FOR PRODUCING THE SAME
EP4299781A4 (en)	2024-08-21	STEEL SHEET AND METHOD FOR THE PRODUCTION THEREOF
EP4365331A4 (en)	2025-07-09	Hot-stamped component and method for producing the same
EP4242336A4 (en)	2023-10-18	STEEL SHEET, ELEMENT, METHOD FOR PRODUCING THE STEEL SHEET AND METHOD FOR PRODUCING SAID ELEMENT
EP4148149A4 (en)	2023-10-18	HOT ROLLED STEEL SHEET AND METHOD FOR PRODUCING THE SAME
EP4079881A4 (en)	2023-05-31	STEEL SHEET AND METHOD OF PRODUCTION THEREOF
EP3666917A4 (en)	2020-08-05	FERRITIC STAINLESS STEEL SHEET AND METHOD OF MANUFACTURING THEREOF
EP4319975C0 (en)	2025-02-19	Panel and method for producing the same
EP3915693C0 (en)	2023-12-06	COLLECTION SYSTEM AND METHOD FOR PRODUCING THE COLLECTION SYSTEM

Legal Events

Date	Code	Title	Description
2022-09-23	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE
2023-10-27	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
2023-10-27	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE
2023-11-29	17P	Request for examination filed	Effective date: 20230821
2023-11-29	AK	Designated contracting states	Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
2024-06-26	DAV	Request for validation of the european patent (deleted)
2024-06-26	DAX	Request for extension of the european patent (deleted)
2025-06-17	REG	Reference to a national code	Ref country code: DE Ref legal event code: R079 Free format text: PREVIOUS MAIN CLASS: C21D0007100000 Ipc: C21D0001260000
2025-07-23	A4	Supplementary search report drawn up and despatched	Effective date: 20250624
2025-07-23	RIC1	Information provided on ipc code assigned before grant	Ipc: C21D 1/26 20060101AFI20250617BHEP Ipc: C21D 7/10 20060101ALI20250617BHEP Ipc: C21D 8/10 20060101ALI20250617BHEP Ipc: C21D 9/08 20060101ALI20250617BHEP Ipc: C22C 38/00 20060101ALI20250617BHEP Ipc: C22C 38/02 20060101ALI20250617BHEP Ipc: C22C 38/04 20060101ALI20250617BHEP Ipc: C22C 38/06 20060101ALI20250617BHEP Ipc: C22C 38/42 20060101ALI20250617BHEP Ipc: C22C 38/44 20060101ALI20250617BHEP Ipc: C22C 38/48 20060101ALI20250617BHEP Ipc: C22C 38/50 20060101ALI20250617BHEP Ipc: C22C 38/54 20060101ALI20250617BHEP Ipc: C22C 38/58 20060101ALI20250617BHEP Ipc: C22C 38/60 20060101ALI20250617BHEP