| Patents for C21D 8 - Modifying the physical properties by deformation combined with, or followed by, heat treatment (18,654) |
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| 08/31/2011 | CN101182757B Sidetracking petroleum case pipe for petroleum natural gas mining industry |
| 08/30/2011 | US8007603 High-strength steel for seamless, weldable steel pipes |
| 08/30/2011 | CA2533023C Method of producing austenitic iron/carbon/manganese steel sheets having a high strength and excellent toughness and being suitable for cold forming, and sheets thus produced |
| 08/25/2011 | WO2011102456A1 Manufacturing method for grain-oriented electromagnetic steel sheet |
| 08/25/2011 | WO2011102455A1 Manufacturing method for grain-oriented electromagnetic steel sheet |
| 08/25/2011 | WO2011102328A1 Non-oriented electromagnetic steel sheet and process for production thereof |
| 08/25/2011 | WO2011102259A1 Steel plate exhibiting little welding deformation and excellent corrosion resistance |
| 08/25/2011 | WO2011102244A1 Steel material exhibiting excellent fatigue-crack progress resistance and corrosion resistance, and production method for same |
| 08/25/2011 | WO2011101158A1 Strip, sheet or blank suitable for hot forming and process for the production thereof |
| 08/25/2011 | WO2011100798A1 Nitriding of niobium steel and product made thereby |
| 08/25/2011 | US20110203705 Method of producing an amorphous transformer for electric power supply |
| 08/25/2011 | CA2789925A1 Strip, sheet or blank suitable for hot forming and process for the production thereof |
| 08/24/2011 | EP2360283A1 PROCESS FOR PRODUCTION OF 780MPa-GRADE HIGH-TENSILE-STRENGTH STEEL PLATES EXCELLENT IN LOW-TEMPERATURE TOUGHNESS |
| 08/24/2011 | CN102165085A Environmentally-friendly, Pb-free free-machining steel, and manufacturing method for same |
| 08/24/2011 | CN102162104A Method for preparing high silicon steel thin plate |
| 08/24/2011 | CN102162072A Ultra-high strength X100 pipeline steel and production method thereof |
| 08/24/2011 | CN102162070A Connecting rod material for engines in powder metallurgy and preparation method thereof |
| 08/24/2011 | CN102162069A Flying-shear main-transmission gearwheel steel and preparation method thereof |
| 08/24/2011 | CN102162067A Steel for anticorrosion sucker rods in oil field and production method thereof |
| 08/24/2011 | CN102162065A 550Mpa yield-strength low-carbon bainitic steel for engineering machinery and preparation method thereof |
| 08/24/2011 | CN102162025A Method for reducing center martensitic structure of high-carbon steel coil rod |
| 08/24/2011 | CN102162024A Method for eliminating coarse grains on surface layer of low-carbon aluminum killed steel |
| 08/24/2011 | CN101532113B Anti-collapse oil casing and manufacturing method thereof |
| 08/24/2011 | CN101353755B High tensile strength substrate, hot dip galvanizing automobile exterior panel and manufacturing method thereof |
| 08/23/2011 | US8002910 Seamless steel tube which is intended to be used as a guide pipe and production method thereof |
| 08/18/2011 | WO2011099408A1 Production method for thick steel plate |
| 08/18/2011 | WO2011069906A3 Method for producing an easily deformable flat steel product, flat steel product, and method for producing a component from such a flat steel product |
| 08/18/2011 | WO2011068311A3 Grain-oriented electrical steel sheet having low core loss and high magnetic flux density |
| 08/17/2011 | EP2357261A1 Steel for machine structure use attaining excellent cutting-tool life and method for cutting same |
| 08/17/2011 | EP2357260A1 Case hardening steel, carburized component, and method for producing case hardening steel |
| 08/17/2011 | EP2356263A1 Method for producing an improved electrical steel strip |
| 08/17/2011 | EP2356262A1 Method and apparatus for producing steel pipes having particular properties |
| 08/17/2011 | EP1513961B1 Steel sheet for vitreous enameling and production method |
| 08/17/2011 | EP0969112B1 A method of producing dual-phase high-strength steel sheets having high impact energy absorption properties |
| 08/17/2011 | CN102154589A Steel for rear axle shaft of heavy-load commercial vehicle |
| 08/17/2011 | CN102154585A High-intensity quake-resistant steel bar for buildings and manufacturing method thereof |
| 08/17/2011 | CN102154542A Isothermal annealing device using gear blank forging waste heat |
| 08/17/2011 | CN101831589B Cold-rolled non-oriented silicon steel with high magnetic induction and low iron loss for high-efficiency motor and manufacture method thereof |
| 08/17/2011 | CN101633994B Thick wall steel plate and manufacturing method thereof |
| 08/17/2011 | CN101616754B Process for producing hot-rolled steel sheet having fine ferrite structure and hot-rolled steel sheet |
| 08/17/2011 | CN101570817B Steel wire rod |
| 08/17/2011 | CN101343714B 30CrMnSiB steel, weldless steel tube for cylinder and method of manufacturing the same |
| 08/16/2011 | US7998289 Press-hardened part and method for the production thereof |
| 08/16/2011 | US7998237 Method and installation for the production of steel products having an optimum surface quality |
| 08/16/2011 | CA2602526C A method of manufacturing a heavy wall seamless steel pipe for line pipe |
| 08/16/2011 | CA2536404C Expansible seamless steel pipe for use in oil well and method for production thereof |
| 08/11/2011 | WO2011096510A1 High-strength welded steel pipe and method for producing the same |
| 08/11/2011 | WO2011096456A1 Production method for thick steel plate |
| 08/11/2011 | WO2011096454A1 Highly corrosion-resistant cold-rolled ferrite stainless steel sheet having excellent toughness, and process for production thereof |
| 08/11/2011 | US20110192508 Magnetostrictive material and preparation method thereof |
| 08/11/2011 | US20110192507 Iron alloy, iron-alloy member, and process for manufacturing the same |
| 08/11/2011 | US20110192504 Method for producing a galvanized steel sheet |
| 08/11/2011 | DE102009042387A1 Producing sheet steel component having areas of different hardness or ductility, comprises cold-forming sheet steel into component in first tool from a blank, and heating the formed component to temperature above austenitizing temperature |
| 08/11/2011 | CA2788713A1 High-strength welded steel pipe and method for producing the same |
| 08/10/2011 | EP2352888A1 Reinforcing |
| 08/10/2011 | CN102149842A Stainless steel, cold strip produced from said steel, and method for producing a flat steel product from said steel |
| 08/10/2011 | CN102149830A Directional electromagnetic steel plate manufacturing method |
| 08/10/2011 | CN102146547A Alloy steel roller and manufacturing process thereof |
| 08/10/2011 | CN101696486B Process for rolling high-intensity titanium alloy pipe |
| 08/09/2011 | US7992299 Method for the economical production of heat exchanger tubes bent in a u-shape |
| 08/09/2011 | CA2654913C Method of and apparatus for hot rolling a thin silicon-steel workpiece into sheet steel |
| 08/09/2011 | CA2502079C Method for making hardenable steel plates by firing, resulting steel plates |
| 08/04/2011 | WO2011093490A1 Steel sheet and process for producing steel sheet |
| 08/04/2011 | WO2011093117A1 Production method for seamless steel pipe used in line pipe, and seamless steel pipe used in line pipe |
| 08/04/2011 | WO2011092905A1 Wire material, steel wire, and processes for production of those products |
| 08/04/2011 | US20110186191 Steel sheet for vitreous enameling and method for producing the same |
| 08/04/2011 | US20110186185 High strength steel sheet excellent in formability and method producing the same |
| 08/04/2011 | US20110186184 Ferritic stainless steel casting and sheet and method for producing the same |
| 08/04/2011 | CA2788095A1 Steel sheet and method of manufacturing steel sheet |
| 08/04/2011 | CA2785425A1 Method for manufacturing seamless steel pipe for line pipe and seamless steel pipe for line pipe |
| 08/03/2011 | EP2351864A1 High-hardness constant-modulus alloy insensitive to magnetism, process for producing same, balance spring, mechanical driving device, and watch |
| 08/03/2011 | EP2351860A1 Biocompatible material made of stainless steel with a martensitic layer obtained by quenching a nitrided layer on the surface. |
| 08/03/2011 | EP2351621A1 Carbon steel wire with high strength and excellent ductility and fatigue resistance, process for producing same, and method of evaluation |
| 08/03/2011 | EP2350332A1 High-strength steel sheet and the method for production therefor |
| 08/03/2011 | EP2350326A1 Ultra-high strength stainless alloy strip, a method of making same, and a method of using same for making a golf club head |
| 08/03/2011 | CN201915121U 铁素体区轧制温度控制系统 Ferrite region rolling temperature control system |
| 08/03/2011 | CN102140608A High-strength cold-rolled steel sheet excellent in workability and method for manufacturing the same |
| 08/03/2011 | CN102140607A Method for manufacturing hot rolled {111}(112) oriented high-silicon steel plates |
| 08/03/2011 | CN102140606A Hot rolled high-strength low-alloy multi-phase steel and preparation method thereof |
| 08/03/2011 | CN101818235B Manufacturing method of rough-rolled tyre for railway locomotive |
| 08/03/2011 | CN101657555B Steel material having excellent high-temperature strength and toughness, and method for production thereof |
| 08/03/2011 | CN101622369B High strength hot rolled steel products for line-pipes excellent in low temperature toughness and production method of the same |
| 08/03/2011 | CN101541994B Weld steel pipe with excellent low-temperature toughness for high-strength line pipe and process for producing the same |
| 08/03/2011 | CN101506393B Austenite-base stainless steel pipe, for boiler, having excellent high-temperature steam oxidation resistance |
| 08/03/2011 | CN101484602B High-tensile strength welded steel tube for structural partsof automobiles and method of producing the same |
| 08/03/2011 | CN101367093B Cooling controlling and rolling controlling process for hot-rolled steel bar with rib |
| 07/28/2011 | WO2011089845A1 Method for producing hot-rolled high carbon steel sheet |
| 07/28/2011 | WO2011089782A1 Wire material, steel wire, and process for production of wire material |
| 07/28/2011 | US20110180187 Method for producing grain-oriented silicon steel containing copper |
| 07/27/2011 | CN1891395B Induction hardened blade |
| 07/27/2011 | CN102137949A High-strength Zn-Al-plated steel wire for bridges which has excellent corrosion resistance and fatigue properties, and process for production thereof |
| 07/27/2011 | CN102137942A Method for reducing edge serration defects in thin slabs |
| 07/27/2011 | CN102134678A Copper-iron alloy material for novel energy-saving motor and preparation method thereof |
| 07/27/2011 | CN102134675A Non-oriented electrical steel for thin slab continuous casting-continuous rolling production and method thereof |
| 07/27/2011 | CN102134633A Precise heat treatment method of high-precision elastic element |
| 07/27/2011 | CN101890622B Method for manufacturing hammer lever of electrohydraulic hammer |
| 07/27/2011 | CN101660098B Hot-rolling seamless steel pipe applicable to high temperature of 580-620 DEG C and high pressure of 24-30MPa and production method thereof |
| 07/27/2011 | CN101652485B Method of continuous annealing for steel strip with curie point and continuous annealing apparatus therefor |
| 07/27/2011 | CN101643880B High tensile strength hot rolled ferrite bainite dual phase steel and preparation method thereof |
| 07/27/2011 | CN101545063B Extruded member of aluminum alloy excelling in flexural crushing performance and corrosion resistance and method for production thereof |