| Patents for B21B 23 - Tube-rolling not restricted to methods provided for in only one of groups , e.g. combined processes (649) |
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| 02/18/2015 | EP2837435A1 Cold rolling method for seamless pipe |
| 01/28/2015 | CN104307876A 一种液压汽缸用精密无缝钢管生产工艺 A hydraulic cylinder with precision seamless production process |
| 01/20/2015 | US8935946 Variable diameter nozzle, joint and rod forming using cam rollers |
| 01/15/2015 | US20150013820 Method for rolling/drawing nickel-free high-nitrogen stainless steel material, thin seamless tube of nickel-free high-nitrogen stainless steel, and method of manufacturing the same |
| 12/24/2014 | CN104245169A 无缝管的冷轧方法 Cold rolling method of a seamless pipe |
| 12/24/2014 | CN104232992A 一种钛合金dfgx-6#轧制管及其制备方法 Titanium alloy dfgx-6 # rolling pipe and its preparation method |
| 12/17/2014 | CN102821882B 钢管的制造方法 The method for producing a steel pipe |
| 12/09/2014 | US8904839 Method of and rolling mill for making seamless steel pipe |
| 09/18/2014 | US20140261840 Manufacture method of tubular member and tubular member manufactured by the same |
| 09/18/2014 | US20140260502 Stent Crimping Tool Insert, System, and Method |
| 09/18/2014 | US20140260480 Methods for Manufacture of Pipe Element Having Shoulder, Groove and Bead |
| 09/04/2014 | US20140245806 Method of producing seamless metal pipe |
| 08/12/2014 | CA2842907A1 Rolling mill and rolling method |
| 08/06/2014 | CN203750993U 一种斜纵轧一体式锚杆轧机 A slant-one vertical rolling mill bolt |
| 08/06/2014 | CN203750992U 二辊四机架连轧机组 Two roll four rack strip mill |
| 07/23/2014 | CN103934269A 一种tc4钛合金无缝管及其生产方法 One kind tc4 titanium alloy seamless pipe and its production method |
| 07/22/2014 | US8783085 Method for straightening tube and straightening roll |
| 06/04/2014 | CN103831300A Continuous rolling and continuous annealing machining unit of flexible environment-friendly fireproof cable |
| 06/04/2014 | CN103831299A Cold rolled tube unit |
| 06/03/2014 | CA2785425C Method for manufacturing seamless steel pipe for line pipe and seamless steel pipe for line pipe |
| 05/20/2014 | US8731717 Methods for manipulating cutting elements for earth-boring drill bits and tools |
| 05/14/2014 | CN103785686A 一种二辊四机架连轧机组 A two-roll four rack strip mill |
| 05/14/2014 | CN102548677B 拉回式芯棒式无缝管轧机及管材的轧制方法 The method of rolling back type mandrel mill and pipe |
| 04/30/2014 | CN103765152A Seamless pipe, level wound coil, cross fin tube-type heat exchanger, and method for producing cross fin tube-type heat exchanger |
| 04/23/2014 | CN103736734A Process of preparing high-chromium alloy supper 13-Cr seamless steel tubes through CPE (cross-roll piercing and elongation) hot rolling mill |
| 04/02/2014 | CN102581555B P91 seamless steel pipe and method for manufacturing same |
| 03/26/2014 | CN103658183A Method for manufacturing high-straightness thin-wall titanium alloy tubes |
| 03/20/2014 | DE102009039710B4 Verfahren zur Herstellung warmgewalzter Hohlprofile mit kleinen Kantenradien, Hohlprofil und Verwendung des Hohlprofils Process for the preparation of hot rolled hollow sections with small edge radii, hollow section and use the hollow profile |
| 02/11/2014 | US8646303 Process for producing a profile from a flat metal strip |
| 01/30/2014 | WO2014017372A1 Seamless metal tube fabrication method, mandrel mill, and auxiliary tools |
| 01/29/2014 | CN203408983U Square tube squaring machine |
| 01/15/2014 | CN102725428B Production method for seamless steel pipe used in line pipe, and seamless steel pipe used in line pipe |
| 01/08/2014 | CN102527724B Manufacturing method of alloy tubular product |
| 12/27/2013 | CA2819342A1 Methods for manufacturing tubes for use in heat exchangers and other systems |
| 12/25/2013 | EP2676747A1 Method for correcting pipe end of seamless pipe formed from high-cr stainless steel |
| 12/25/2013 | EP2014378B1 Process for producing stainless-steel pipe |
| 12/12/2013 | US20130327110 Method for straightening |
| 11/27/2013 | CN203304298U Double-screw rod cold pilger mill |
| 11/27/2013 | CN203304281U Chuck box of side-mounted cold pilger mill |
| 11/27/2013 | CN203304280U Worm and gear type clamp box of cold pilger mill |
| 11/27/2013 | CN203304279U Swing mechanism of side-mounted cold pilger mill |
| 11/12/2013 | US8578748 Reducing force needed to form a shape from a sheet metal |
| 11/12/2013 | CA2595251C Shaped direct chill aluminum ingot |
| 11/06/2013 | CN102039313B Method for producing large-diameter seamless steel pipe for gas cylinder |
| 11/06/2013 | CN101439350B Method for producing seamless steel pipe for producing gas cylinder with heavy caliber for hauled vehicle |
| 10/30/2013 | EP2656931A1 PRODUCTION METHOD FOR ROUND STEEL BAR FOR SEAMLESS PIPE COMPRISING HIGH Cr-Ni ALLOY, AND PRODUCTION METHOD FOR SEAMLESS PIPE USING ROUND STEEL BAR |
| 10/23/2013 | CN103370152A Method for correcting pipe end of seamless pipe formed from high-Cr stainless steel |
| 10/17/2013 | WO2013153794A1 Cold rolling method for seamless pipe |
| 10/16/2013 | EP2650060A1 Method for manufacturing seamless pipe |
| 09/25/2013 | EP2640532A1 Method for producing seamless hot-rolled pipes in continuous pipe rolling mills |
| 09/25/2013 | CN103316916A Square tube former and production method of square tubes |
| 09/17/2013 | CA2584461C Method of making a seamless hot-finished steel pipe, and device for carrying out the method |
| 09/04/2013 | CN101829679B Production method for producing shock toughness of pipe coupling material of hot rolled oil well |
| 08/28/2013 | CN103269808A Production method for round steel bar for seamless pipe comprising high cr-i alloy, and production method for seamless pipe using round steel bar |
| 08/27/2013 | US8516869 Operating method for a cold-rolling line train with improved dynamics |
| 08/21/2013 | CN103260778A Method for producing seamless hot-olled pipes in continuous pipe rolling mills |
| 08/14/2013 | CN103249503A Method for manufacturing seamless pipe |
| 07/16/2013 | CA2743165C Method for producing seamless metallic tube by cold rolling |
| 07/11/2013 | US20130174628 Method and device for producing conical pipe sections in helical foundations |
| 06/25/2013 | USRE44308 Method for manufacturing seamless pipes or tubes |
| 06/05/2013 | CN103128102A Production method of titanium alloy oil well pipe |
| 05/30/2013 | US20130133390 Method and apparatus for making a collar to the end of a pipe |
| 05/28/2013 | US8448488 Flat wire manufacturing method of manufacturing flat wire for ring gear |
| 05/22/2013 | CN202943077U Inner die of great reducing forming pipe die blank |
| 05/16/2013 | US20130118632 Oil country tubular goods with dual phase structure and producing method thereof |
| 05/15/2013 | CN202933940U Cold rolled tube unit |
| 05/01/2013 | CN103071679A One-step forming technology of hollow anchor rod |
| 05/01/2013 | CN101610854B Device and method for monitoring manufacturing status of seamless pipe and seamless pipe manufacturing facility |
| 03/27/2013 | CN101977703B Method of producing seamless metal tube and punch for use therein |
| 03/20/2013 | CN101956137B Seamless steel tube for manufacturing hollow core rod and production method |
| 02/07/2013 | WO2013018821A1 Seamless pipe, level wound coil, cross fin tube-type heat exchanger, and method for producing cross fin tube-type heat exchanger |
| 02/05/2013 | US8365563 Methods for reducing ridge buckles and annealing stickers in cold rolled strip and ridge-flattening skin pass mill |
| 01/30/2013 | EP2551026A1 Steel pipe production equipment |
| 01/23/2013 | EP2548987A1 Seamless steel pipe for steam injection, and method of manufacturing same |
| 01/23/2013 | CN102015138B Method for manufacturing seamless pipes and method for determining length of billet for manufacturing seamless pipes |
| 01/09/2013 | EP2542361A1 Hot work tool and method for producing same |
| 12/13/2012 | US20120312062 Device and method for rolling of pipe blanks |
| 12/12/2012 | EP2532449A2 Device and method for rolling hollow blanks |
| 12/12/2012 | CN102821882A Steel pipe production equipment |
| 12/06/2012 | US20120305122 Welded steel pipe for linepipe having high compressive strength and high fracture toughness and manufacturing method thereof |
| 12/05/2012 | EP2530172A1 Production method for seamless steel pipe used in line pipe, and seamless steel pipe used in line pipe |
| 12/05/2012 | CN102812146A Seamless steel pipe for steam injection, and method of manufacturing same |
| 11/28/2012 | CN102802824A Tube rolling plant |
| 11/28/2012 | CN102802823A Tube rolling plant |
| 11/20/2012 | US8312751 Method for producing high alloy pipe |
| 11/14/2012 | EP2521626A1 Tube rolling plant |
| 11/14/2012 | CN102781600A Hot work tool and method for producing same |
| 10/31/2012 | CN101454089B Process for producing seamless stainless-steel pipe |
| 10/24/2012 | CN101569893B Manufacturing method of aluminum or aluminum-alloy seamless pipe |
| 10/10/2012 | CN102725428A Production method for seamless steel pipe used in line pipe, and seamless steel pipe used in line pipe |
| 10/03/2012 | CN102699103A Preparation method of 20CrMo steel pipe |
| 09/19/2012 | CN1608761B Method and equipment for rolling rolled piece in a rolling equipment with diagonal rolling machine |
| 08/23/2012 | WO2012111307A1 Method for correcting pipe end of seamless pipe formed from high-cr stainless steel |
| 08/22/2012 | CN101994875B Method for manufacturing seamless copper pipe and rod core used for cold rolling mill |
| 08/22/2012 | CN101722190B Process for treating hot-rolled capillary pipe |
| 08/08/2012 | EP2484458A1 Retract mandrel mill and method for rolling tubing |
| 07/26/2012 | US20120186800 Heat sink for electronic device and process for production thereof |
| 07/18/2012 | CN102581555A P91 seamless steel pipe and method for manufacturing same |
| 07/12/2012 | US20120174646 Retract mandrel mill and method for rolling tube blank |
| 07/11/2012 | CN102553926A Method for manufacturing large-caliber seamless alloy steel pipes |