Patents
Sitemap › B21 - Mechanical metal-working without essentially removing material; Punching metal › B21B - Rolling of metal › B21B 23 - Tube-rolling not restricted to methods provided for in only one of groups , e.g. combined processes
Patents for B21B 23 - Tube-rolling not restricted to methods provided for in only one of groups , e.g. combined processes (649)
07/2012
07/04/2012CN102548677A Retract mandrel mill and method for rolling tubing
07/04/2012CN102527724A Manufacturing method of alloy tubular product
07/04/2012CN101410194B Cold finish seamless steel pipe for drive shaft and method for producing the same
07/03/2012US8210019 Method for producing pearlitic rail excellent in wear resistance and ductility
06/2012
06/28/2012WO2012086179A1 PRODUCTION METHOD FOR ROUND STEEL BAR FOR SEAMLESS PIPE COMPRISING HIGH Cr-Ni ALLOY, AND PRODUCTION METHOD FOR SEAMLESS PIPE USING ROUND STEEL BAR
06/27/2012CN101743074B Pusher device for piercing-rolling process and seamless pipe manufacturing method using same
06/14/2012WO2012077334A1 Method for manufacturing seamless pipe
05/2012
05/24/2012WO2012065585A1 Method for producing seamless hot-rolled pipes in continuous pipe rolling mills
05/24/2012US20120125068 Method for producing seamless tubes by means of a three-roll bar rolling mill
05/23/2012CN101468360B Seamless oil well steel tube restraint tandem rolling processing equipment
05/22/2012US8185232 Learning method of rolling load prediction for hot rolling
05/10/2012US20120111081 Method of manufacturing magnesium alloy processing materials with low cycle fatigue life improved by pre-straining
04/2012
04/25/2012EP2442923A1 Tube rolling plant
04/04/2012CN102405114A Method of producing seamless pipe and apparatus for performing the same
03/2012
03/22/2012US20120070272 Method for producing metal elements, in particular sealing elements
02/2012
02/29/2012EP2422892A1 Method of producing seamless pipe and apparatus for performing the same
02/28/2012US8122749 Mandrel mill and process for manufacturing a seamless pipe
02/15/2012EP1795274B1 METHOD FOR HOT WORKING OF Cr-CONTAINING STEEL
02/08/2012CN101410537B 双相不锈钢无缝管的制造方法 Duplex stainless steel seamless pipe manufacturing method
01/2012
01/25/2012CN202123104U Hot continuous rolling machine for seamless steel pipe
01/19/2012US20120015118 Method and device for controlling the color of metals
01/17/2012US8096161 Method for rolling strips in a roll stand
01/17/2012US8096160 Method for reducing shearing and crop losses at rolling of assembled slabs
01/04/2012CN101652197B Method for manufacturing cold-finished seamless steel pipe for integrally molded drive shaft
01/04/2012CN101568658B High-strength highly heat-conductive copper alloy pipe and process for producing the same
12/2011
12/14/2011CN102274854A 超级奥氏体不锈钢管制造工艺 Super austenitic stainless steel pipe manufacturing process
12/01/2011US20110290377 Method for producing duplex stainless steel pipe
11/2011
11/30/2011EP2390016A1 Process for production of seamless metal pipe by cold rolling
11/17/2011US20110280683 Screw or nut with a thread a pitch of which varies and tool to produce said screw or nut
11/16/2011CN102245321A Method for producing seamless tubes by means of a three-roll bar rolling mill
11/16/2011CN102245320A Process for production of seamless metal pipe by cold rolling
11/06/2011CA2739084A1 Method for manufacturing a rotor for a generator
11/02/2011CN102228905A Production process of hot continuous rolling seamless steel tube with small caliber
10/2011
10/20/2011US20110252853 Method and apparatus for compacting a cigs thin film in a non-vacuum environment
09/2011
09/29/2011WO2011118681A1 Steel pipe production equipment
09/27/2011US8024953 Lubricant for hot working and method for producing seamless steel pipe
09/22/2011WO2011114896A1 Seamless steel pipe for steam injection, and method of manufacturing same
09/22/2011US20110226031 Rolling mill stand and related rolling mill for longitudinally rolling rod-shaped bodies
09/22/2011CA2790278A1 Seamless steel pipe for steam injection and method for manufacturing the same
09/21/2011CN102191435A Non-carbide bainite steel heavy drill rod
09/21/2011CN102189107A Rolling apparatus for producing tubular products and method for producing tubular products
09/15/2011US20110222643 Cladding tube for nuclear fuel rod, method and apparatus for manufacturing a cladding tube
09/14/2011EP2121208B1 Method and device for rolling a product to be rolled in a rolling mill having a cross-rolling mill
09/14/2011CN101538623B Process for manufacturing T/P91.92 fine-grained heat-resistant steel pipe
09/09/2011WO2011107214A1 Hot work tool and method for producing same
09/09/2011CA2793074A1 Method for producing a hot work tool
08/2011
08/24/2011EP2358485A2 Method for producing seamless tubes by means of a three-roll bar rolling mill
08/18/2011WO2011061444A3 Method for manufacturing a tubular metal part
08/16/2011CA2602526C A method of manufacturing a heavy wall seamless steel pipe for line pipe
08/04/2011WO2011093117A1 Production method for seamless steel pipe used in line pipe, and seamless steel pipe used in line pipe
08/04/2011CA2785425A1 Method for manufacturing seamless steel pipe for line pipe and seamless steel pipe for line pipe
07/2011
07/21/2011US20110174473 Methods of forming enhanced-surface walls for use in apparatae for performing a process, enhanced-surface walls, and apparatae incorporating same
07/14/2011WO2011083367A1 Tube rolling plant
06/2011
06/02/2011US20110129381 High-tensile steel with excellent weldability and toughness and with tensile strength of 550 mpa class or more and method of production of the same
05/2011
05/26/2011WO2011061444A2 Method for manufacturing a tubular metal part
05/18/2011CN101410536B Method of manufacturing seamless pipe and tube
05/12/2011US20110107722 Spacer tube for an insulated glazing, as well as device and method for production of the spacer tube, and insulated glazing having a spacer frame composed of such spacer tubes
05/05/2011WO2011030273A3 Plant for rolling tubes
05/04/2011CN102039313A Method for producing large-diameter seamless steel pipe for gas cylinder
04/2011
04/13/2011CN102015138A Method for manufacturing seamless pipes and method for determining length of billet for manufacturing seamless pipes
04/13/2011CN102009069A Manufacturing process of small-caliber hot rolling seamless steel tubes
04/07/2011WO2011039943A1 Retract mandrel mill and method for rolling tubing
04/06/2011CN101426594B Process for producing stainless-steel pipe
03/2011
03/31/2011DE102009039710A1 Verfahren zur Herstellung warmgewalzter Hohlprofile mit kleinen Kantenradien Process for the preparation of hot rolled hollow sections with small edge radii
03/30/2011CN101994875A Method for manufacturing seamless copper pipe and rod core used for cold rolling mill
03/17/2011WO2011030273A2 Plant for rolling tubes
03/16/2011EP2295159A1 Method of producing seamless metal tube and punch for use therein
03/09/2011CN101608282B Drill rod material steel pipe resisting low temperature of -40 to -60 DEG C and manufacturing method thereof
03/03/2011US20110049448 Method for making threaded tube
02/2011
02/17/2011US20110039121 Aluminum strip for lithographic printing plate carriers and the production thereof
02/16/2011CN101977703A Method of producing seamless metal tube and punch for use therein
02/02/2011EP2279097A1 Energy absorbing beam with controlled crush characteristics
02/02/2011CN101961730A Method for making steel tube
02/01/2011US7879165 Sheet having excellent plastic workability; press workability; high strength and elongation using a twin-roll cast raw material; no recrystalliztaion of the crystal gains decreasing the occurrence of cracks during working
02/01/2011US7877877 Method for manufacturing a solid housing
01/2011
01/26/2011CN101956137A Seamless steel tube for manufacturing hollow core rod and production method
01/26/2011CN101444792B Method for producing seamless steel pipes used for large-diameter high-pressure gas cylinders
01/20/2011US20110011143 Operating method for a cold-rolling line train with improved dynamics
12/2010
12/29/2010CN101553327B Manufacturing method for seamless pipe
12/29/2010CN101444793B Method for fabricating seamless steel pipes for large-diameter high-pressure gas cylinders used in trailer production
12/23/2010WO2010146546A1 Tube rolling plant
12/23/2010US20100319432 Process for Producing a Profile from a Flat Metal Strip
12/23/2010CA2763292A1 Tube rolling plant
12/21/2010US7854154 Process and computer program for controlling a rolling process
12/15/2010CN101914666A Method for improving transverse impact toughness of seamless steel tube
11/2010
11/24/2010CN101890432A Production method of large-caliber high-pressure boiler tube
11/10/2010EP1607148B1 Method of manufacturing seamless tube
11/03/2010CN101410535B Method for production of martensitic stainless steel pipe
10/2010
10/28/2010WO2010122847A1 Method of producing seamless pipe and apparatus for performing the same
10/06/2010CN101104179B All direction multifunctional adjustment disc extending machine
09/2010
09/30/2010US20100242566 Method for a operating a rolling mill train with curvature recognition
09/30/2010DE102009003690A1 Verfahren zur Kaltumformung von Metallrohren A method for cold forming of metal pipes
09/16/2010WO2010066230A3 Method for producing seamless tubes by means of a three-roll bar rolling mill
09/15/2010EP2228460A1 High-strength highly heat-conductive copper alloy pipe and process for producing the same
09/15/2010CN201579299U L80-13Cr oil sleeve manufacturing system
09/15/2010CN101829679A Production method for producing shock toughness of pipe coupling material of hot rolled oil well
09/08/2010CN101410196B Process for manufacturing a seamless tube
09/01/2010CN101450350B Method and rolling mill to produce wireless steel pipes
09/01/2010CN101386037B Treatment technique of 1010 steel for bearing ring
08/2010
08/17/2010US7775080 Rolling method and rolling apparatus for flat-rolled metal materials
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