| 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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| 10/04/2007 | WO2007110930A1 Process for producing seamless pipe |
| 09/25/2007 | CA2205150C Rolling annular workpieces |
| 09/20/2007 | US20070214855 System For Supplying Lubricant, Apparatus For Manufacturing Seamless Pipes Or Tubes, And Method Of Manufacturing Seamless Pipes Or Tubes |
| 09/12/2007 | CN101032724A Seamless pipe four-roller type hot sizing stand |
| 09/07/2007 | WO2007100259A1 Tool for connecting and disconnecting tubulars |
| 09/07/2007 | WO2007100042A1 PROCESS FOR PRODUCING HIGH-Cr SEAMLESS PIPE |
| 09/07/2007 | CA2644836A1 Tool for connecting and disconnecting tubulars |
| 09/05/2007 | CN101029348A Process for heating titanium oblique perforating rod ingot |
| 08/29/2007 | CN200939452Y Integrated three-roller continuous tube mill |
| 08/29/2007 | CN101024229A Continuous casting, continuous solling production method and apparatus for stainless steel seamless composite pipe |
| 08/28/2007 | US7260966 Tube shell for manufacturing a seamless steel pipe and a method for its manufacture |
| 08/23/2007 | WO2007094424A1 Disk roll and method of manufacturing seamless pipe using the same |
| 08/22/2007 | EP1820576A1 Production method of seamless steel pipe |
| 08/22/2007 | CN101020192A Hot rolling process of seamless steel pipe |
| 08/22/2007 | CN101020191A Hot rolling process of seamless steel pipe |
| 08/22/2007 | CN101020190A Hot rolling process of seamless steel pipe |
| 08/16/2007 | US20070186604 Method and apparatus for producing a cylindriacal hollow body from a blank |
| 08/08/2007 | CN1330436C Method for making soldered hot-rolled composite metal tube |
| 08/08/2007 | CN101011707A Technology for manufacturing collar thick-wall seamless steel pipe |
| 08/01/2007 | CN101007384A Manufacturing method of 17-4PH steel pipe |
| 07/25/2007 | CN2925660Y Transmission of fungus puncture |
| 07/25/2007 | CN2925656Y Assembled oblique pipe roller |
| 07/25/2007 | CN101003052A Process for making seamless aluminium and aluminium alloy tubes |
| 07/18/2007 | CN100998991A Device for regulating baking angle of roll-box of large horizontal perforating machine |
| 07/12/2007 | US20070157691 Process for producing seamless steel pipe |
| 07/11/2007 | CN2920460Y Three parallel composite conical roll heat finsihing mill |
| 06/27/2007 | CN2915300Y Three-roller skew rolling tube grimper |
| 06/20/2007 | CN1981948A Three-roller pipe rolling apparatus |
| 06/13/2007 | EP1795274A1 METHOD FOR HOT WORKING OF Cr-CONTAINING STEEL |
| 06/06/2007 | CN1977060A Fe-Ni alloy pipe stock and method for manufacturing the same |
| 06/06/2007 | CN1977058A Ni base alloy pipe stock and method for manufacturing the same |
| 05/24/2007 | WO2007040768A3 Bi-metal disc brake rotor and method of manufacturing |
| 05/23/2007 | CN1968766A Process for producing seamless steel pipe |
| 05/16/2007 | CN2899991Y Inlet guide sleeve device for seamless steel pipe conical punching machine |
| 05/16/2007 | CN2899990Y Guide plate device of seamless steel pipe conical punching machine |
| 05/16/2007 | CN2899987Y Conical punching machine for seamless steel pipe |
| 05/10/2007 | US20070101789 Carbon, silicon, manganese, phosphorus, sulfur, chromium, aluminum, titanium, nitrogen, boron and oxygen; automobile parts; improving acceleration response owing to the enhancement of torsion stiffness, controlling indoor noise |
| 05/09/2007 | EP1651364A4 Apparatus for rectifing round pipe and tubing |
| 05/09/2007 | CN2897470Y Integrated spiral finned pipe roller |
| 05/09/2007 | CN1960816A Method for manufacturing seamless steel pipe or tube |
| 04/25/2007 | EP1777314A1 RAW PIPE OF Fe-Ni ALLOY AND METHOD FOR PRODUCTION THEREOF |
| 04/25/2007 | EP1777313A1 Ni BASE ALLOY MATERIAL TUBE AND METHOD FOR PRODUCTION THEREOF |
| 04/18/2007 | EP1775038A1 Process for producing seamless steel pipe |
| 04/18/2007 | CN1947874A Delivery mechanism for outlet platform ejector pin circulation of punching machine |
| 03/22/2007 | US20070062238 Method for manufacturing seamless steel pipe or tube |
| 03/14/2007 | CN2877904Y Novel size rolls |
| 03/07/2007 | CN2875637Y Blank pushing machine in front of seamless steel pipe perforating machine |
| 03/07/2007 | CN1923395A Production method for high precision seamless steel pipe |
| 02/28/2007 | EP1757376A1 Process for producing seamless steel pipe |
| 02/28/2007 | CN1919530A Manufacturing technique of heavy caliber alloy seamless steel pipe |
| 02/14/2007 | CN2868480Y Secondary piercing top for seamless steel pipe piercing mill |
| 02/07/2007 | CN1909984A Method for producing seamless pipe |
| 02/01/2007 | US20070022796 Method for manufacturing seamless pipes or tubes |
| 01/23/2007 | US7165430 Method and apparatus for patterning of bore surfaces |
| 01/17/2007 | CN1898037A Lubricant supply system and apparatus and method for manufacturing seamless pipe |
| 01/11/2007 | US20070006626 Seamless tube piercing/rolling plug, seamless tube piercing/rolling apparatus, and seamless tube producing method therewith |
| 01/10/2007 | CN1891398A Method for producing mavensite stainless-steel seamless pipe |
| 12/21/2006 | WO2006134957A1 Boring machine, plug, and method of manufacturing seamless steel tube |
| 12/21/2006 | WO2006133696A1 Device for production of a seamless hollow body from steel |
| 12/21/2006 | US20060283225 Tube shell for manufacturing a seamless steel pipe and a method for its manufacture |
| 12/21/2006 | DE102005028667A1 Vorrichtung zum Herstellen eines nahtlosen Hohlkörpers aus Stahl Apparatus for producing a seamless hollow body made of steel |
| 12/21/2006 | CA2611870A1 Method of making a seamless hollow body from steel |
| 12/13/2006 | CN2845938Y Sizing and reducing mill for large diameter seamless steel pipe |
| 12/12/2006 | US7146836 Piercing method for manufacturing of seamless pipe |
| 12/06/2006 | EP1727636A1 Method and apparatus for patterning of bore surfaces |
| 11/30/2006 | WO2006126678A1 Roll for rolling seamless pipes |
| 11/29/2006 | EP1060803B1 Apparatus and method for changing disc roll of vertical piercing mill |
| 11/15/2006 | CN1863608A Method of manufacturing seamless tube by three-roll mandrel mill |
| 11/01/2006 | CN2832336Y Dynamically balanced two-roller heavy caliber cone retaining-mandrel puncher and tube mill |
| 10/25/2006 | CN1281348C Producing method for precision superlong copper alloy pipe |
| 10/12/2006 | WO2006106802A1 Method for producing seamless tube |
| 10/11/2006 | CN2825144Y Perforating roller of perforating machine |
| 10/04/2006 | EP1707280A1 Method for producing seamless pipe |
| 09/06/2006 | EP1698406A1 Lubricant supply system and apparatus and method for manufacturing seamless pipe |
| 09/06/2006 | CN1273231C Manufacturing method for punch roller |
| 09/05/2006 | US7100410 Method of manufacturing seamless tube |
| 08/17/2006 | WO2006085599A1 Two-pack-type seizing inhibitor for hot plastic working and process for producing seamless tube with the same |
| 08/10/2006 | US20060174670 Piercing method for manufacturing of seamless pipe |
| 08/10/2006 | US20060174669 Apparatus for rectifying round pipe and tubing |
| 08/02/2006 | EP1060804B1 Apparatus and method for changing piercer roll of vertical piercing mill |
| 07/26/2006 | CN2799108Y Round tube opening empty-curve forming machine set |
| 07/26/2006 | CN1809431A Apparatus for rectifing round pipe and tubing |
| 07/26/2006 | CN1809430A Tube stock for manufacturing seamless steel tube and method of manufacturing the same |
| 07/19/2006 | CN1264618C Method for making metal pipe and planetary skew rolling mill |
| 07/12/2006 | EP1679136A1 Method of manufacturing seamless tube by three-roll mandrel mill |
| 07/05/2006 | EP1676652A1 Tube stock for manufacturing seamless steel tube and method of manufacturing the same |
| 07/05/2006 | CN1796016A Geometric model of new elongater for skew rolling tubular products |
| 06/28/2006 | CN1795060A Drilling/rolling method in manufacturing seamless tube |
| 06/21/2006 | CN1791479A Method of manufacturing seamless tube |
| 06/21/2006 | CN1260019C Method and apparatus for measuring eccentricity of hollow pipe billet |
| 05/31/2006 | CN2784100Y Three-roller cold perforating machine and hole enlarging machine for skew rolling |
| 05/24/2006 | CN1775393A Large-diameter seamless steel pipe sizing-reducing mill |
| 05/03/2006 | EP1651364A1 Apparatus for rectifing round pipe and tubing |
| 04/26/2006 | EP1649945A1 Drilling/rolling method in manufacturing seamless tube |
| 04/20/2006 | WO2004112978A8 Apparatus for rectifying round pipe and tubing |
| 03/30/2006 | US20060065032 Method of manufacturing seamless tube |
| 03/22/2006 | EP1637244A1 Method of manufacturing seamless tube |
| 03/08/2006 | CN1744955A Seamless steel tube for drive shaft and method for manufacturing the same |
| 01/26/2006 | US20060016234 Apparatus and method for production of tapered steel pipe |
| 01/25/2006 | CN1726100A Seamless metal tube producing method |