| Patents for C21D 8 - Modifying the physical properties by deformation combined with, or followed by, heat treatment (18,654) |
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| 04/08/2009 | CN101405419A High-strength pearlite rail with excellent delayed-fracture resistance |
| 04/08/2009 | CN101405418A Rolled material for fracture split connecting rod excelling in fracture splittability, hot forged part for fracture split connecting rod excelling in fracture splittability, and fracture split connect |
| 04/08/2009 | CN101403077A Biphase stainless steel and method for making same |
| 04/08/2009 | CN101403075A Wide-thick steel plate with yield strength of 460Mpa for bridge and method of manufacturing the same |
| 04/08/2009 | CN101403028A Processing method for optimizing stainless steel |
| 04/08/2009 | CN101402167A Manufacturing method of stainless steel band for flexible thin-film solar cell |
| 04/08/2009 | CN100476007C CSP production process of steel for automobile crossbeam |
| 04/08/2009 | CN100476005C High tensile strength steel material having excellent weldability and toughness and class tensile strength above 550MPa, and manufacturing method therefor |
| 04/08/2009 | CN100475982C Method of continuous casting non-oriented electrical steel strip |
| 04/07/2009 | US7513959 Non-oriented electrical steel sheet and method for manufacturing the same |
| 04/07/2009 | CA2314624C Manufacturing process for iron-carbon-manganese alloy strips, and strips produced thereby |
| 04/02/2009 | WO2009041703A1 Hot-rolled shape steel for crude oil tanks and process for manufacturing the same |
| 04/02/2009 | US20090087335 Fire resistant steel and method of production of same |
| 04/01/2009 | EP2042616A1 ROLLED AUSTENITE STAINLESS STEEL PLATE HAVING THICHKESS OF 100 mm OR MORE AND METHOD FOR PRODUCTION THEREOF |
| 04/01/2009 | EP2041330A2 Process for manufacturing iron-carbon-manganese austenitic steel sheet with excellent resistance to delayed cracking, and sheet thus produced |
| 04/01/2009 | EP1611260A4 Method and apparatus for strengthening of powder metal gears by ausforming |
| 04/01/2009 | EP1325966B1 Super-high strength cold-rolled steel sheet and method for production thereof |
| 04/01/2009 | CN101400813A Steel sheet with less weld buckling deformation, and process for producing the same |
| 04/01/2009 | CN101397637A 13Cr high anti-carbon dioxide and trace hydrogen sulfide corrosion tubing and casing steel and method for producing the same |
| 04/01/2009 | CN101397636A High toughness ring chain steel for mine and method for producing the same |
| 04/01/2009 | CN101397635A 12Cr2Mo1R thick steel plate for equipment contacting hydrogen and method for producing the same |
| 04/01/2009 | CN101397627A Fire resistant and weather resistant anti-shock steel and method for producing the same |
| 04/01/2009 | CN101397625A Superfine grain steel sheet with yield strength of 420 MPa grade and method for producing the same |
| 04/01/2009 | CN100473744C Method for preparing rare-earth containing high temperature oxidation resistant ferritic stainless steel |
| 04/01/2009 | CN100473743C Stamping high-strength heating galvanized steel with excellent welding performance and method for manufacturing the same |
| 04/01/2009 | CN100473742C Hot-rolled fine-grained steel for electrostatic enamel and manufacturing method thereof |
| 04/01/2009 | CN100473739C Manufacturing method for high-strength straight welding oil annular tube steel |
| 04/01/2009 | CN100473731C Method for producing high tensile steel sheet |
| 03/31/2009 | US7510614 High strength bolt excellent in delayed fracture resistance and method of production of same |
| 03/25/2009 | EP2039793A1 High-strength steel pipe with excellent unsusceptibility to strain aging for line piping, high-strength steel plate for line piping, and processes for producing these |
| 03/25/2009 | EP2038445A2 Duplex stainless steel |
| 03/25/2009 | EP1577407B1 Alloyed-molten-zinc-plated steel sheet with excellent processability and high strength and process for producing the same |
| 03/25/2009 | EP1452616B1 Ferritic stainless steel sheet excellent in press formability and workability and method for production thereof |
| 03/25/2009 | EP1273670B1 Method for manufacturing high strength bolt excellent in resistance to delayed fracture and to relaxation |
| 03/25/2009 | CN101395292A Refractory steel material with excellent welded-joint toughness and process for producing the same |
| 03/25/2009 | CN101395284A Process for producing grain-oriented magnetic steel sheet with excellent magnetic property |
| 03/25/2009 | CN101392353A High manganese and low chromium type high strength and toughness hot-work die steel and preparation method thereof |
| 03/25/2009 | CN101392352A Thick high tension steel plate for high heat energy input welding and production method thereof |
| 03/25/2009 | CN101392350A Extremely low yield point steel plate and production method thereof |
| 03/25/2009 | CN101392315A Technique method for improving twin boundary number in gamma' precipitation enhancement type ferrous alloy |
| 03/25/2009 | CN100471980C Method and apparatus for producing hot dip plated metallic strip |
| 03/25/2009 | CN100471975C Heat-resistant ferritic stainless steel and method for production thereof |
| 03/25/2009 | CN100471972C High strength steel plate excellent in formability and method for production thereof |
| 03/25/2009 | CN100471587C Themo-mechatronic system and thermo-electromechanical process method for prefabricating strips |
| 03/24/2009 | US7507307 excellent in stretch-flangeability and spot-weldability; weight reduction of automobile; continuous annealing; suppression of transformation of austenite into ferrite |
| 03/19/2009 | US20090074605 High manganese high strength steel sheets with excellent crashworthiness and method for manufacturing of it |
| 03/19/2009 | US20090071578 Method for manufacturing a high carbon hot-rolled steel sheet |
| 03/19/2009 | US20090071575 Hot rolled dual phase steel sheet, and method of making the same |
| 03/19/2009 | US20090071574 Cold rolled dual phase steel sheet having high formability and method of making the same |
| 03/18/2009 | EP2036995A1 High-strength steel pipe with excellent low-temperature toughness for line pipe, high-strength steel plate for line pipe, and processes for producing these |
| 03/18/2009 | EP2035587A1 A method and a system for producing hot-rolled strip silicon steel based on thin slabs |
| 03/18/2009 | EP1273673B1 Grain oriented electromagnetic steel sheet having excellent magnetic properties without undercoating mainly composed of forsterite and method of producing the steel sheet. |
| 03/18/2009 | CN101389778A Wire with excellent suitability for drawing and process for producing the same |
| 03/18/2009 | CN101386962A Non-magnetic high-strength stainless steel and manufacturing method thereof |
| 03/18/2009 | CN101386957A Spring steel wire rod excellent in decarburization resistance and wire drawing workability and method for producing same |
| 03/18/2009 | CN101386906A Cooling technique after lead treated steel rolling |
| 03/18/2009 | CN101386126A Production method of stainless steel band for electric thin shrapnel |
| 03/18/2009 | CN101386124A Medium and heavy plate production technique and special production line thereof |
| 03/18/2009 | CN101386054A Forging technique of 1000MW nuclear power plant steam turbine low-pressure rotor |
| 03/18/2009 | CN100470187C Method for determining the wall thickness of a metal tube |
| 03/18/2009 | CN100469937C Steel with high mechanical strength and wear resistance |
| 03/18/2009 | CN100469935C CSP production process for hot-galvanizing-baking hardened steel sheet |
| 03/18/2009 | CN100469934C High-strength steel product excelling in fatigue strength and process for producing the same |
| 03/17/2009 | US7503984 Overcoating with lubricant |
| 03/17/2009 | US7503116 Feeding web of steel into roll-forming station so that the roller dies therein shape web of steel into a continuous, elongated body of steel having a preselected cross-sectional profile; cutting continuous, elongated body of steel, heating, shaping |
| 03/17/2009 | CA2314830C Process for the production of thin trip-steel strips and thin strips obtained using such a process |
| 03/12/2009 | US20090065106 Ultra soft high carbon hot-rolled steel sheets and manufacturing method thereof |
| 03/12/2009 | US20090065104 Method of producing a cold-rolled strip with a ferritic structure |
| 03/11/2009 | EP2034036A2 Wire rod having excellent wire drawability and its production method |
| 03/11/2009 | EP1469954B2 Method for producing a hot rolled strip from austenitic rust-resistant steels |
| 03/11/2009 | CN101384744A Strip made of stainless austenitic steel with bright surface and excellent mechanical properties |
| 03/11/2009 | CN101381854A Method for producing low carbon and high niobium content bainite high-strength steel cut deal |
| 03/11/2009 | CN101381847A Flushing and abrasion-resistant steel with high tensile strength and producing method thereof |
| 03/11/2009 | CN101381845A High-purity ferrite stainless steel material and manufacturing method thereof |
| 03/11/2009 | CN101381842A High chromium content ferrite stainless steel and manufacturing method thereof |
| 03/11/2009 | CN101381841A High intensity and high ductility -50 DEG C low-temperature steel and manufacturing method thereof |
| 03/11/2009 | CN101381840A Wire rod having excellent wire drawability and its production method |
| 03/11/2009 | CN101381803A Control method of toothed wheel steel band structure |
| 03/11/2009 | CN101380712A Production method of steel edge |
| 03/11/2009 | CN101380658A Automobile hub bearings limit ring manufacturing technique and production die thereof |
| 03/11/2009 | CN100467658C Non-magnetic high-strength stainless steel material and method for manufacturing the same |
| 03/11/2009 | CN100467656C Fine-grained martensitic stainless steel and prducing method thereof |
| 03/11/2009 | CN100467652C Easy-weld hardening high-strength steel plate and production method thereof |
| 03/11/2009 | CN100467625C Method for producing oriented silicon steel |
| 03/11/2009 | CN100467624C Method for producing stainless steel having improved corrosion resistance |
| 03/11/2009 | CN100467148C Method for producing hot strips consisting of lightweight steel |
| 03/10/2009 | US7501031 Steel sheet for tin plated steel sheet and tin-free steel sheet each having excellent formability and manufacturing method thereof |
| 03/10/2009 | US7501030 Hot-rolled steel strip for high strength electric resistance welding pipe and manufacturing method thereof |
| 03/10/2009 | US7501029 Sheet excellent in geomagnetic shielding property for use in a picture tube band for clamping the periphery of the panel portion of a cathode ray tube (another named to Braun tube or picture tube) incorporated in a television set, office automation machine |
| 03/10/2009 | US7501028 Non-grain oriented magnetic steel strip or magnetic steel sheet and method for its production |
| 03/05/2009 | WO2009028515A1 Process for manufacturing high-strength hot-rolled steel sheet |
| 03/05/2009 | WO2008142275A4 Microalloyed steel with good resistance to hydrogen for the cold-forming of machine parts having high properties |
| 03/05/2009 | US20090056838 Ferritic Stainless Steel Sheet Having Excellent Corrosion Resistance and Method of Manufacturing the Same |
| 03/04/2009 | EP2031081A1 Dual-phase steel, flat product made of such dual-phase steel and method for manufacturing a flat product |
| 03/04/2009 | EP2031080A1 High temperature alloy |
| 03/04/2009 | EP2031079A1 High-strength electromagnetic steel sheet and process for producing the same |
| 03/04/2009 | EP1846628A4 A method and apparatus for forming metal reinforcing |
| 03/04/2009 | CN101379209A Fire-resistant high-strength rolled steel material and method for production thereof |
| 03/04/2009 | CN101376954A Corrosion resistant, antibacterial nickel-saving austenitic stainless steel and production method thereof |
| 03/04/2009 | CN101376953A High-corrosion resistant high-strength weather resisting steel and manufacturing method thereof |