CN115261726A - 特厚Q370qE桥梁钢板及其生产方法 - Google Patents
特厚Q370qE桥梁钢板及其生产方法 Download PDFInfo
- Publication number
- CN115261726A CN115261726A CN202210934165.0A CN202210934165A CN115261726A CN 115261726 A CN115261726 A CN 115261726A CN 202210934165 A CN202210934165 A CN 202210934165A CN 115261726 A CN115261726 A CN 115261726A
- Authority
- CN
- China
- Prior art keywords
- stage
- steel plate
- percent
- rolling
- controlled
- 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
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 148
- 239000010959 steel Substances 0.000 title claims abstract description 148
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 40
- 238000001816 cooling Methods 0.000 claims abstract description 94
- 238000010438 heat treatment Methods 0.000 claims abstract description 88
- 238000005096 rolling process Methods 0.000 claims abstract description 80
- 238000001514 detection method Methods 0.000 claims abstract description 11
- 229910052799 carbon Inorganic materials 0.000 claims description 27
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 25
- 239000000126 substance Substances 0.000 claims description 18
- 229910052748 manganese Inorganic materials 0.000 claims description 16
- 238000003723 Smelting Methods 0.000 claims description 15
- 239000012535 impurity Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 229910001563 bainite Inorganic materials 0.000 claims description 11
- 229910052804 chromium Inorganic materials 0.000 claims description 11
- 229910052759 nickel Inorganic materials 0.000 claims description 11
- 238000007670 refining Methods 0.000 claims description 11
- 230000035945 sensitivity Effects 0.000 claims description 11
- 229910052750 molybdenum Inorganic materials 0.000 claims description 10
- 229910001568 polygonal ferrite Inorganic materials 0.000 claims description 10
- 229910052720 vanadium Inorganic materials 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 9
- 229910052717 sulfur Inorganic materials 0.000 claims description 8
- 238000006477 desulfuration reaction Methods 0.000 claims description 7
- 230000023556 desulfurization Effects 0.000 claims description 7
- 230000009467 reduction Effects 0.000 claims description 7
- 238000005266 casting Methods 0.000 claims description 6
- 229910052758 niobium Inorganic materials 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 238000009749 continuous casting Methods 0.000 abstract description 11
- 239000002131 composite material Substances 0.000 abstract description 4
- 238000004512 die casting Methods 0.000 abstract description 4
- 238000005496 tempering Methods 0.000 abstract description 3
- 238000007669 thermal treatment Methods 0.000 abstract description 3
- 239000011572 manganese Substances 0.000 description 17
- 230000006872 improvement Effects 0.000 description 9
- 238000005728 strengthening Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 7
- 239000002344 surface layer Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 229910001566 austenite Inorganic materials 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 229910000859 α-Fe Inorganic materials 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000010583 slow cooling Methods 0.000 description 3
- 239000006104 solid solution Substances 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000007872 degassing Methods 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910001096 P alloy Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005234 chemical deposition Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000003009 desulfurizing effect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910001562 pearlite Inorganic materials 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
Images
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
- B21B1/463—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/58—Roll-force control; Roll-gap control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific 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
- C21D11/00—Process control or regulation for heat treatments
- C21D11/005—Process control or regulation for heat treatments for cooling
-
- 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
- C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips 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
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
- C22C33/06—Making ferrous alloys by melting using master alloys
-
- 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
- C22C38/40—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
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
-
- 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
- C21D2211/002—Bainite
-
- 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
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
Description
Claims (12)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202210934165.0A CN115261726B (zh) | 2022-08-04 | 2022-08-04 | 特厚Q370qE桥梁钢板及其生产方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202210934165.0A CN115261726B (zh) | 2022-08-04 | 2022-08-04 | 特厚Q370qE桥梁钢板及其生产方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN115261726A true CN115261726A (zh) | 2022-11-01 |
CN115261726B CN115261726B (zh) | 2023-06-06 |
Family
ID=83748326
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202210934165.0A Active CN115261726B (zh) | 2022-08-04 | 2022-08-04 | 特厚Q370qE桥梁钢板及其生产方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN115261726B (zh) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109722601A (zh) * | 2019-03-17 | 2019-05-07 | 湖南华菱湘潭钢铁有限公司 | 一种低碳当量的特厚钢板q420e的生产方法 |
CN109972033A (zh) * | 2019-03-17 | 2019-07-05 | 湖南华菱湘潭钢铁有限公司 | 一种低碳当量的特厚钢板q460e的生产方法 |
CN110735085A (zh) * | 2019-09-25 | 2020-01-31 | 江苏沙钢集团有限公司 | 一种薄规格Q345qE、Q370qE钢板的制造方法 |
WO2022067962A1 (zh) * | 2020-09-29 | 2022-04-07 | 南京钢铁股份有限公司 | 低成本高性能Q370qE-HPS桥梁钢及生产方法 |
CN114717377A (zh) * | 2022-03-23 | 2022-07-08 | 张家港宏昌钢板有限公司 | 连铸型厚钢板及其生产方法 |
-
2022
- 2022-08-04 CN CN202210934165.0A patent/CN115261726B/zh active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109722601A (zh) * | 2019-03-17 | 2019-05-07 | 湖南华菱湘潭钢铁有限公司 | 一种低碳当量的特厚钢板q420e的生产方法 |
CN109972033A (zh) * | 2019-03-17 | 2019-07-05 | 湖南华菱湘潭钢铁有限公司 | 一种低碳当量的特厚钢板q460e的生产方法 |
CN110735085A (zh) * | 2019-09-25 | 2020-01-31 | 江苏沙钢集团有限公司 | 一种薄规格Q345qE、Q370qE钢板的制造方法 |
WO2022067962A1 (zh) * | 2020-09-29 | 2022-04-07 | 南京钢铁股份有限公司 | 低成本高性能Q370qE-HPS桥梁钢及生产方法 |
CN114717377A (zh) * | 2022-03-23 | 2022-07-08 | 张家港宏昌钢板有限公司 | 连铸型厚钢板及其生产方法 |
Also Published As
Publication number | Publication date |
---|---|
CN115261726B (zh) | 2023-06-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN110184525B (zh) | 一种高强度q500gje调质态建筑结构用钢板及其制造方法 | |
JP7457843B2 (ja) | 極地海洋工事用鋼板及びその製造方法 | |
CN101768698B (zh) | 一种低成本屈服强度700mpa级非调质处理高强钢板及其制造方法 | |
US20220411907A1 (en) | 690 mpa-grade medium manganese steel medium thick steel with high strength and low yield ratio and manufacturing method therefor | |
CN108728743B (zh) | 低温断裂韧性良好的海洋工程用钢及其制造方法 | |
CN115181911B (zh) | 特厚Q500qE桥梁钢板及其生产方法 | |
CN104694822A (zh) | 一种屈服强度700MPa级高强度热轧钢板及其制造方法 | |
CN109652733B (zh) | 一种690MPa级特厚钢板及其制造方法 | |
CN105018862B (zh) | 一种140mm厚度高韧性钢板及其制造方法 | |
WO2017185668A1 (zh) | 一种易焊接低温抗层状撕裂性能优异的钢板及其制备方法 | |
CN101928876A (zh) | 加工性优良的trip/twip高强塑性汽车钢及其制备方法 | |
CN112553532A (zh) | 一种高韧性减量化船板海工钢及其制备方法 | |
CN113430467B (zh) | 一种薄规格1400MPa级贝氏体钢及其制造方法 | |
CN103556047A (zh) | 一种450MPa级抗氢致开裂压力容器用钢板及其生产方法 | |
JP2023519992A (ja) | 355MPaグレードの海洋工学用低温耐性の熱間圧延されたH字型鋼及びその製造方法 | |
CN111349859B (zh) | 一种复合坯轧制大厚度500MPa级高Z向层状性能低温容器钢板及其制造方法 | |
CN104018063B (zh) | 低合金高强度q420c中厚钢板的生产方法 | |
CN112226687A (zh) | 一种低轧制压缩比齿条钢板及其制造方法 | |
CN104131238A (zh) | 高成型高耐候极薄规格热轧钢板及其csp生产工艺 | |
CN113846269B (zh) | 一种具有高强塑性冷轧高耐候钢板及其制备方法 | |
CN103540850B (zh) | 屈服强度≥550MPa的超厚工程机械用钢及生产方法 | |
CN108085592A (zh) | 一种小于等于100mm厚的屈服强度390MPa级船板钢及制备方法 | |
CN115261746B (zh) | 特厚Q420qE桥梁钢板及其生产方法 | |
CN110629002A (zh) | 一种基于tmcp生产低压缩比抗层状撕裂特厚板的方法 | |
CN113106210B (zh) | 一种200mm以上厚度规格P355GH-Z35汽包钢板的制造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant | ||
CP03 | Change of name, title or address |
Address after: 215624 Shagang science and technology building, Yongxin Road, Jinfeng Town, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee after: INSTITUTE OF RESEARCH OF IRON & STEEL, JIANGSU PROVINCE/SHA-STEEL, Co.,Ltd. Country or region after: China Patentee after: Jiangsu Shagang Steel Co.,Ltd. Patentee after: JIANGSU SHAGANG GROUP Co.,Ltd. Address before: 215624 Shagang science and technology building, Yongxin Road, Jinfeng Town, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee before: INSTITUTE OF RESEARCH OF IRON & STEEL, JIANGSU PROVINCE/SHA-STEEL, Co.,Ltd. Country or region before: China Patentee before: ZHANGJIAGANG HONGCHANG STEEL PLATE Co.,Ltd. Patentee before: JIANGSU SHAGANG GROUP Co.,Ltd. |
|
CP03 | Change of name, title or address |