| Patents for B21B 19 - Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work (1,478) |
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| 01/24/2006 | US6988387 Making method for seamless metallic tube |
| 01/12/2006 | CA2572157A1 Ni base alloy pipe stock and method for manufacturing the same |
| 01/12/2006 | CA2572156A1 Fe-ni alloy pipe stock and method for manufacturing the same |
| 01/04/2006 | CN1234475C Method for rolling pipe billet in planet web roll piercing mill and device for feeding pipe billet |
| 12/29/2005 | WO2005123289A1 Process for producing seamless steel pipe |
| 12/20/2005 | US6976377 Method of and apparatus for producing tubes of metal |
| 12/08/2005 | WO2005115650A1 Process for producing seamless steel pipe |
| 12/01/2005 | US20050266927 Seamless steel tube for drive shaft and method for manufacturing the same |
| 11/16/2005 | EP1595609A1 Seamless steel tube for drive shaft and method of manufacturing the same |
| 11/16/2005 | CN1695839A Roller trio skew rolling method for cold perforating and cold chambering ingot |
| 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 |
| 11/09/2005 | EP1593441A1 Seamless metal tube producing method |
| 11/03/2005 | DE10105827B4 Vorrichtung zum spanlosen Umformen von langgestreckten Werkstücken Apparatus for chipless forming elongated workpieces |
| 11/02/2005 | EP1194606B1 Heat resistant austenitic stainless steel |
| 10/06/2005 | US20050217336 Method and apparatus for patterning of bore surfaces |
| 10/05/2005 | CN1221337C Method for hot rolling tube of copper and copper alloy |
| 10/05/2005 | CN1221336C Method of manufacturing copper and copper alloy pipes using planetary tube mill |
| 09/29/2005 | US20050210944 Making method for seamless metallic tube |
| 09/20/2005 | US6945083 Method of and apparatus for determining the eccentricity of a hollow billet |
| 09/15/2005 | WO2005084857A1 Method and apparatus for patterning of bore surfaces |
| 09/14/2005 | CN1668768A Martensitic stainless steel seamless pipe and a manufacturing method thereof |
| 08/25/2005 | US20050183799 Non heat treated; ferrite area ratio is not more than ten percent; carbon equivalent between five tenths and nine tenths percent; rolling is completed without lowering the temperature during the manufacturing process; the precipitates are fine because of no reheating |
| 08/24/2005 | CN2719431Y Three-roll diagonal-rolling cold-punching ring-rolling machine |
| 08/24/2005 | CN1657643A High strength seamless steel pipe and its manufacturing method |
| 07/28/2005 | WO2005068098A1 Method for producing seamless pipe |
| 07/26/2005 | US6920773 Method and apparatus for manufacturing tubes by rolling |
| 07/07/2005 | WO2005061137A1 Lubricant supply system and apparatus and method for manufacturing seamless pipe |
| 06/29/2005 | CN1208142C Three-roller copper pipe blank rotary rolling method resulting in great deformation |
| 06/22/2005 | CN1207114C Technology for rolling seamless steel pipe |
| 06/16/2005 | DE10020702B4 Walzwerk, insbesondere Schräg- oder Diescherwalzwerk, in Modulbauweise Rolling mill, especially inclined or Diescherwalzwerk, in modular design |
| 06/01/2005 | EP1463591B1 Method and rolling stand for producing rods, bar stock or seamless tubes |
| 05/25/2005 | CN1618540A Method for making soldered hot-rolled composite metal tube |
| 05/19/2005 | DE10349056A1 Process for rolling rolling stock e.g. metal rods in a rolling mill comprises measuring the rotation of the rolling stock about its longitudinal direction, and controlling a drive parameter of a planetary cross rolling mill |
| 05/18/2005 | CN1201879C Conic perforator |
| 05/17/2005 | US6892559 Method and apparatus for manufacturing tubes |
| 04/27/2005 | CN1608761A Method and equipment for rolling rolled piece in a rolling equipment with diagonal rolling machine |
| 04/21/2005 | WO2005035154A1 Method of manufacturing seamless tube by three-roll mandrel mill |
| 04/13/2005 | EP1521856A1 Martensitic stainless steel seamless pipe and a manufacturing method thereof |
| 04/13/2005 | CN2691721Y Multisection type skew rolling punching reaming top |
| 04/06/2005 | CN2690065Y Seamless steel pipe combined pipe mill group |
| 03/09/2005 | CN1191889C Plug and mandrel bar for rolling of seamless steel pipe and method of mfg . seamless steel pipe |
| 02/16/2005 | CN1580310A Seamless steel pipe alloy steel with anti hydrogen sulfide stress corrosion and steel pipe working process |
| 02/16/2005 | CN1580309A Seamless steel pipe alloy steel with moisture and seawater corrosion resistance and steel pipe working process |
| 02/09/2005 | CN2677049Y Steel pipe reducing pinching rolling mill |
| 02/09/2005 | CN1575877A Rolling mill for the fabrication of seamless tubes |
| 02/03/2005 | DE10126411B4 Verfahren zum Walzen von Rohrluppen in einem Planetenschrägwalzwerk und Vorrichtung zum Zuführen von Rohrluppen in ein Planetenschrägwalzwerk Method of rolling tube blanks in a planetary skew rolling mill, and means for supplying tube blanks in a planetary skew rolling mill |
| 01/26/2005 | EP1500441A1 Rolling mill for the fabrication of seamless tubes |
| 01/26/2005 | CN1186141C Manufacturing method of square steel tube |
| 01/19/2005 | EP1498193A1 Method and device for fabricating seamless tubes |
| 01/05/2005 | CN1559714A Production technology for punching continuous casting blank by head |
| 01/05/2005 | CN1559713A Technology of manufacturing hollow steel |
| 12/29/2004 | WO2004112978A1 Apparatus for rectifying round pipe and tubing |
| 12/29/2004 | WO2004112977A1 Tube stock for manufacturing seamless steel tube and method of manufacturing the same |
| 12/16/2004 | WO2004108310A1 Drilling/rolling method in manufacturing seamless tube |
| 12/02/2004 | WO2004103593A1 Method of manufacturing seamless tube |
| 12/01/2004 | CN1177656C Manufacturing method of square steel tube |
| 11/10/2004 | CN1544169A Variable diameter and variable wall steel pipe rolling mill |
| 10/27/2004 | CN1172758C Warm machining method for making titanium or Ti-alloy pipe |
| 10/14/2004 | US20040200249 Method of and apparatus for producing tubes of metal |
| 10/13/2004 | EP1466674A2 Method and device for the manufacturing of a tube from a metallic material |
| 10/13/2004 | CN1535774A Method and device for making metal pipe |
| 10/12/2004 | CA2463351A1 Method of and apparatus for producing tubes of metal |
| 10/06/2004 | EP1463591A1 Method and rolling stand for producing rods, bar stock or seamless tubes |
| 09/23/2004 | DE10333507B3 Process to manufacture a seamless steel pipe by punching hot metal block with a mandrel followed by passage through inclined nip mill |
| 09/21/2004 | US6792781 Arrangement for inclined rolling of tube-shaped or bar shaped rolling products |
| 09/15/2004 | CN1166465C Warm machining method for making copper or cu alloy pipe |
| 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 |
| 09/02/2004 | DE10316910B3 Production of metallic pipes comprises rolling the start of the pipe loop and/or the end of the pipe loop together using an inner tool |
| 08/26/2004 | WO2004071686A1 Seamless steel tube for drive shaft and method of manufacturing the same |
| 08/25/2004 | CN1522806A Tube rolling set large-scale member repairing by macromolecular complex material and its process |
| 08/12/2004 | DE10334011B3 Rolling mill forming seamless steel tube, includes roller end sections to grip and carry the tube or its blank, and inner tool with blank-penetrating section at its end |
| 08/12/2004 | DE10236757B4 Verfahren zur Herstellung eines Hohlblocks aus metallischem Material A method of manufacturing a hollow block of metal material |
| 07/07/2004 | CN2623366Y Driving force device of card punchs |
| 06/24/2004 | WO2004052569A1 Seamless metal tube producing method |
| 06/09/2004 | EP1010477B1 Plug and mandrel bar for rolling of seamless steel pipe and method of manufacturing seamless steel pipe |
| 06/09/2004 | CN2619734Y Three-roll pipe-rolling expanding mill |
| 04/28/2004 | CN1492788A Method and apparatus for manufacturing tubes by rolling |
| 03/24/2004 | CN1483524A Technology for rolling seamless steel pipe |
| 03/10/2004 | CN1481285A Method and appts. for mfg. tubes |
| 03/10/2004 | CN1480268A Method for hot rolling tube of copper and copper alloy |
| 03/10/2004 | CN1141191C Method for boring/rolling seamless steel pipe and apparatus thereof |
| 03/03/2004 | CN1478614A Rolling method of seamless steel pipe |
| 02/26/2004 | US20040035165 Method and apparatus for manufacturing tubes by rolling |
| 02/19/2004 | US20040034501 Method and apparatus for determining the eccentricity of a hollow billet |
| 02/19/2004 | DE10236757A1 Verfahren zur Herstellung eines Hohlblocks aus metallischem Material A method of manufacturing a hollow block of metal material |
| 02/18/2004 | CN1475316A Method of manufacturing copper and copper alloy pipes using planetary tube mill |
| 02/18/2004 | CN1475315A Method for mfg, seamless steel pipe |
| 02/11/2004 | EP1388378A1 Method for producing a hollow ingot of metallic material |
| 01/29/2004 | DE10229771A1 Verfahren und Vorrichtung zur Bestimmung der Exzentrizität eines Hohlblocks Method and device for determining the eccentricity of a hollow block |
| 01/28/2004 | CN1470338A Method and apparatus for measuring eccentricity of hollow tube blank |
| 01/22/2004 | WO2004007780A1 Martensitic stainless steel seamless pipe and a manufacturing method thereof |
| 01/21/2004 | CN1468672A Method and apparatus for measuring eccentricity of hollow pipe billet |
| 01/21/2004 | CN1468670A Three-roller copper pipe blank rotary rolling method resulting in great deformation |
| 01/15/2004 | US20040007033 Method and apparatus for manufacturing tubes |
| 01/14/2004 | EP1046435B1 Piercing mill and method of changing cannon |
| 01/08/2004 | US20040003637 Method of and apparatus for determining the eccentricity of a hollow billet |
| 01/07/2004 | EP1378299A1 Method and apparatus for determining the eccentricity of a hollow block |
| 01/03/2004 | CA2434105A1 Method and apparatus for determining the eccentricity of a hollow billet |
| 12/24/2003 | CN2593920Y Three-roller diagonal rolling pipe mill |