| Patents for B21B 17 - Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling (1,014) |
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| 05/24/2006 | EP1479457B1 Method of manufacturing seamless steel pipe |
| 05/11/2006 | DE19532643C5 Rohrwalzverfahren zum Strecken und Walzen von Rohrluppen und Dornwalzanlage Tube rolling method of stretching and rolling tube blanks and mandrel mill |
| 05/11/2006 | DE10332221B4 Verfahren zur Minimierung verdickter Enden beim Auswalzen von Walzprodukten A method for minimizing thickened ends when rolling out of rolled products |
| 05/09/2006 | CA2184208C Rotary upper roll selector |
| 05/04/2006 | WO2006046702A1 Production method of seamless steel pipe |
| 04/26/2006 | CN1764509A Method of manufacturing seamless tube. |
| 04/26/2006 | CN1253260C Pipe rolling method and rolling mill |
| 04/19/2006 | CN1761541A Method and apparatus for producing pipe, wall thickness variation-obtaining device, and computer program |
| 04/19/2006 | CN1760398A Steel in use for soldering pressure pipe in hydraulic power station under large line energy, and manufacturing method |
| 04/18/2006 | US7028518 Method of producing seamless steel tubes |
| 04/11/2006 | US7024906 Roll stand for rolling bar-shaped or tubular material |
| 03/23/2006 | US20060059969 Method of manufacturing a seamless pipe |
| 03/16/2006 | US20060053855 Manufacturing method and manufacturing apparatus of pipe, thickness deviation information derivation apparatus, and computer program |
| 03/08/2006 | CN1744955A Seamless steel tube for drive shaft and method for manufacturing the same |
| 03/01/2006 | CN2761300Y High-efficient cold-reducing mill |
| 02/08/2006 | CN1240867C Non quenched and tempered seamless steel pipe |
| 01/18/2006 | CN1236873C Tension-reduced rolling mill and its operation method |
| 01/04/2006 | EP1611969A1 Method and apparatus for producing pipe, wall thickness variation-obtaining device, and computer program |
| 01/04/2006 | CN1234896C Steel pipe having high formability and method for production thereof |
| 12/29/2005 | WO2005123289A1 Process for producing seamless steel pipe |
| 12/21/2005 | EP1607148A1 Method of manufacturing seamless tube |
| 12/08/2005 | WO2005115650A1 Process for producing seamless steel pipe |
| 12/07/2005 | CN1705527A Method and apparatus for rolling a tube |
| 12/01/2005 | US20050266927 Seamless steel tube for drive shaft and method for manufacturing the same |
| 11/30/2005 | CN1701869A Double roller reciprocating type tube rolling technology |
| 11/16/2005 | EP1595609A1 Seamless steel tube for drive shaft and method of manufacturing the same |
| 11/10/2005 | WO2005068098A9 Method for producing seamless pipe |
| 11/10/2005 | DE4428530C5 Verfahren und Walzgerüst zum Schrägwalzen von Rohren Process and roll stand for skew rolling of tubes |
| 10/26/2005 | CN1224471C Section-variable tube of single rotator and its manufacture method and equipment |
| 10/13/2005 | WO2005095013A1 Method and device for controlling fixed diameter rolling of tube |
| 10/06/2005 | WO2005092531A1 Tube manufacturing method and apparatus for fixed diameter rolling |
| 10/05/2005 | CN1221335C Rolling mill and rolling-mill group |
| 09/21/2005 | CN2726752Y Machine set with roller row direct forming square duct function |
| 09/20/2005 | US6945084 Rolling mill for rolling or sizing metal pipes |
| 09/20/2005 | US6945083 Method of and apparatus for determining the eccentricity of a hollow billet |
| 09/14/2005 | EP1574266A1 Changeover system and changeover method for a metal forming mill |
| 09/09/2005 | WO2005082554A1 Changeover system and changeover for a metal forming mill |
| 09/09/2005 | CA2557918A1 Changeover system and changeover for a metal forming mill |
| 08/23/2005 | CA2380964C High-carbon steel pipe having superior cold workability and induction hardenability, and mentod of producing the same |
| 08/17/2005 | CN2717552Y Head Pure rolling device for multi-roller cold-reducing mill |
| 08/10/2005 | EP0788850B1 Steel pipe manufacturing method and apparatus |
| 08/09/2005 | CA2239024C A unit for rolling pipes on a mandrel |
| 08/04/2005 | WO2005070574A1 Tube reducing apparatus and roll for tube reducing apparatus |
| 07/28/2005 | WO2005068098A1 Method for producing seamless pipe |
| 07/20/2005 | EP1554064A1 Method and apparatus for rolling a tube |
| 06/01/2005 | EP1463591B1 Method and rolling stand for producing rods, bar stock or seamless tubes |
| 06/01/2005 | EP1169150B1 Method for manufacturing a pipe with a not circular cross-section and device therefor |
| 05/25/2005 | CN1618540A Method for making soldered hot-rolled composite metal tube |
| 05/11/2005 | CN1615189A Method of manufacturing seamless steel pipe |
| 04/26/2005 | CA2337777C Rolling mill and rolling-mill train |
| 04/21/2005 | WO2005035155A1 Method of measuring misalignment of multi-stage rolling mill and measuring device therefor |
| 04/21/2005 | WO2005035154A1 Method of manufacturing seamless tube by three-roll mandrel mill |
| 04/21/2005 | WO2005035153A1 Method and device for adjusting screw-down location of rolling roll forming three-roll mandrel mill |
| 02/17/2005 | DE10332221A1 Minimizing thickened ends during rolling of metallic rolled products in stretch reducing mill comprises heating end sections of rolled products to higher temperature than average rolling temperature |
| 02/09/2005 | CN1575876A Method for processing two-element copper-zinc alloy pipe |
| 01/26/2005 | CN1186141C Manufacturing method of square steel tube |
| 01/19/2005 | CN1565763A Technique for dilating trio-roller rolling tube diameter |
| 01/05/2005 | CN1559713A Technology of manufacturing hollow steel |
| 12/28/2004 | US6834523 Method for producing seamless tube with grooved inner surface |
| 12/16/2004 | US20040250597 Method and device for production of hollow sections |
| 12/08/2004 | CN1552536A Manufacturing method for punch roller |
| 12/02/2004 | US20040238075 High strength, toughness, weldability; cracking resistance; controlled carbon equivalent content |
| 12/01/2004 | CN1177656C Manufacturing method of square steel tube |
| 11/24/2004 | EP1479457A1 Method of manufacturing seamless steel pipe |
| 11/11/2004 | DE20122242U1 Vorrichtung zur Herstellung von Hohlprofilen An apparatus for producing hollow profiles |
| 11/03/2004 | CN1173786C Rolling stand having three or more adjustable arms |
| 10/20/2004 | CN2649202Y Steel pipe perforating background ejector-pin escape preventing device |
| 10/07/2004 | WO2004085086A1 Method of manufacturing seamless tube |
| 10/06/2004 | EP1463591A1 Method and rolling stand for producing rods, bar stock or seamless tubes |
| 09/29/2004 | CN1532300A Non quenched and tempered seamless steel pipe |
| 09/23/2004 | WO2004080623A1 Method and apparatus for producing pipe, wall thickness variation-obtaining device, and computer program |
| 09/22/2004 | CN1167522C Unit for rolling pipes on mandrel |
| 09/09/2004 | DE10261632B4 Verfahren und Walzanlage zum Herstellen von Draht, Stäben oder nahtlosen Rohren A method and rolling mill for producing wire rods or seamless tubes |
| 08/26/2004 | WO2004071686A1 Seamless steel tube for drive shaft and method of manufacturing the same |
| 08/25/2004 | EP1449597A2 Rolling mill for rolling of a longitudinally extending product |
| 08/25/2004 | CN1522806A Tube rolling set large-scale member repairing by macromolecular complex material and its process |
| 08/19/2004 | DE10307199B3 Rolling stand, for rod and tubular materials, has roller shafts in eccentric bushes at the housing, meshing together by bevel gears in cassettes to allow eccentric adjustment without play at the drive teeth |
| 08/11/2004 | CN1519064A Reciprocatting type pipe mill with long stroke |
| 07/21/2004 | CN2626640Y Water curtain dust remover of retained mandrel mill |
| 07/14/2004 | EP1437422A1 Steel pipe having high formability and method for production thereof |
| 07/07/2004 | CN2623366Y Driving force device of card punchs |
| 06/24/2004 | DE20320404U1 Walzgerüst zum Walzen von stab- oder rohrförmigem Gut Rolling mill for rolling rod-shaped or tubular Good |
| 06/17/2004 | US20040112107 Roll stand for rolling bar-shaped or tubular stock |
| 06/15/2004 | US6749954 Welded steel pipe having excellent hydroformability and method for making the same |
| 06/09/2004 | CN1152971C High carbon steel pipe excellent in cold formabiltiy and high frequency hardenability and method for producing the same |
| 05/27/2004 | US20040099355 Method of producing high-carbon steel pipe having superior cold workability and induction hardenability |
| 05/18/2004 | US6736910 For use as steering shaft and a drive shaft of automobiles |
| 05/06/2004 | WO2004037455A1 Method and apparatus for rolling a tube |
| 04/08/2004 | US20040065133 Method of producing seamless steel tubes |
| 04/08/2004 | DE10305039A1 Rolling mill stand for rolling rod- or pipe-like material comprises a roller held in an axial position on a shaft by sleeve elements lying on the roller |
| 04/07/2004 | CN1144630C Method for minimizing thickened ends during rolling of pipes in stretch reducing mill |
| 03/24/2004 | CN1142833C Mandrel mill method of tube rolling by using the same |
| 03/17/2004 | CN1142040C Method for making high-bond composite bimetal pipe |
| 03/04/2004 | DE10015339B4 Walzgerüst für Walzstraßen zum Walzen von metallischen Rohren, Stäben oder Drähten Rolling mill for rolling mills for rolling metal tubes, rods or wires |
| 02/26/2004 | US20040035176 Method for manufacturing an aluminum tube |
| 01/21/2004 | CN1468672A Method and apparatus for measuring eccentricity of hollow pipe billet |
| 01/08/2004 | US20040003637 Method of and apparatus for determining the eccentricity of a hollow billet |
| 12/24/2003 | DE10206255C2 Rohrschweißvorrichtung Pipe welder |
| 12/10/2003 | EP1369664A1 Method and device for measuring the excentricity of a hollow block |
| 12/04/2003 | US20030221753 Super fine granular steel pipe and method for producing the same |