| 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) |
|---|
| 11/05/2008 | CN201143513Y Perforation head unit connector |
| 10/29/2008 | EP1985385A1 Disk roll and method of manufacturing seamless pipe using the same |
| 10/23/2008 | WO2008126427A1 Boring machine |
| 10/22/2008 | CN201135994Y Flat roll finishing mill for processing tube of cylinder |
| 10/14/2008 | US7434434 Method and apparatus for producing a cylindrical hollow body from a blank |
| 10/08/2008 | CN201127951Y Large-sized pipe fitting calender |
| 10/08/2008 | CN101282795A Bi-metal disc brake rotor and method of manufacturing |
| 09/18/2008 | US20080226935 Tubular product and manufacturing method and manufacturing device thereof |
| 09/10/2008 | CN101259589A Two-stand angularly hot rolling minor diameter seamless steel tube rolling technique and equipment thereof |
| 09/03/2008 | CN101254507A Method for manufacturing seamless pipes or tubes |
| 08/27/2008 | CN101249514A 组装式二辊轧机 Assembled two-roll mill |
| 08/27/2008 | CN101249507A Oilfield waste and old oil passageway renovate method |
| 08/27/2008 | CN101249506A Posted sides seamless steel pipe roller milling method |
| 08/06/2008 | CN101234398A Steel tube shaping machine for porous roller |
| 07/30/2008 | CN101229561A Gearing of sizing reducing mill |
| 07/23/2008 | EP1946859A1 Method for manufacturing seamless pipes or tubes |
| 07/23/2008 | CN101224490A Continuous rheological extending forming method for preparing Al alloy tube |
| 07/23/2008 | CN100404151C Seamless metal tube producing method |
| 07/16/2008 | CN201086094Y Rack gearing of punching machine jogger thrust carriage |
| 07/16/2008 | CN201086093Y Transmission device of sizing, reducing mill |
| 07/10/2008 | WO2008081866A1 Process for producing seamless steel pipe made of high-chromium high-nickel alloy steel |
| 07/09/2008 | CN201082433Y Hot rolling punching machine branch steel cylinder connection device |
| 07/09/2008 | CN100400679C High strength seamless steel pipe and its manufacturing method |
| 07/02/2008 | CN201079795Y Fast replacing device for plug |
| 07/02/2008 | CN101209462A Steel tube punching machine three-roller centring device center alignment degree integration measurement method |
| 07/02/2008 | CN101209461A Steel tube punching machine three-roller centring device center alignment degree on-line measurement method |
| 06/25/2008 | CN101204713A Disconnection device for punch refrigerant top |
| 06/12/2008 | US20080134742 Seamless tube piercing/rolling plug, and seamless tube producing method using same |
| 06/11/2008 | CN201070639Y Automatic control system of weldless steel tube punching machine |
| 06/11/2008 | CN101198420A Boring machine, plug, and method of manufacturing seamless steel tube |
| 06/11/2008 | CN101198419A Device for production of a seamless hollow body from steel |
| 06/11/2008 | CN101195126A Ceramic-metallic composite cladding layer top head for tube inserting machine and method for producing the same |
| 06/10/2008 | US7383710 Seamless tube piercing/rolling apparatus, and seamless tube producing therewith |
| 06/04/2008 | CN101190446A Method for manufacturing super-long titanium or titanium alloy tube |
| 06/04/2008 | CN101190445A Method for manufacturing super-long titanium or titanium alloy tube |
| 06/04/2008 | CN101190444A Method for manufacturing super-long titanium or titanium alloy tube |
| 06/04/2008 | CN101190443A Method for manufacturing super-long titanium or titanium alloy tube |
| 05/29/2008 | WO2008062752A1 Manufacturing method for seamless pipe |
| 05/29/2008 | DE102006053773A1 Method for rolling elongated product in rolling mill involves arranging number of rolls on periphery of rolling product and contact and reshape rolling product on axial extension |
| 05/21/2008 | CN101181720A Flat roll finishing mill for processing steel cylinder pipe |
| 05/15/2008 | US20080110533 Non heat treated; high toughness and having preferable weldability; rolling is completed without lowering temperature during manufacturing process; precipitates are fine because of no reheating; low carbon; tensile strength is not less than 640 Mpa and the yield stress is not less than 490 Mpa |
| 05/14/2008 | CN101176882A Process technique of high-strength titanium alloy pipes |
| 05/07/2008 | CN201055870Y Work foreground of weldless steel tube punching machine |
| 05/07/2008 | CN201055869Y Main unit base of sizing machine for producing weldless steel tube |
| 05/06/2008 | US7367126 Powered wet-shaving razor |
| 04/30/2008 | CN201052516Y Tube rolling machine hollow heart plug |
| 04/30/2008 | CN100384553C Seamless steel tube for drive shaft and method for manufacturing the same |
| 04/16/2008 | CN101161361A Rack gearing of punching machine jogger thrust carriage |
| 04/10/2008 | US20080083254 Manufacturing method and cleaning equipment for seamless tube |
| 04/09/2008 | EP1908533A1 Boring machine, plug, and method of manufacturing seamless steel tube |
| 04/09/2008 | CN101157094A Method for processing macrotype pipe fittings calendering |
| 03/26/2008 | EP1901862A1 Device for production of a seamless hollow body from steel |
| 03/26/2008 | CN101151108A Method for producing seamless tube |
| 03/20/2008 | WO2008032508A1 Device and method for monitoring manufacturing status of seamless pipe and seamless pipe manufacturing facility |
| 03/19/2008 | CN201036787Y Three-roller diameter-reducing machine set |
| 03/19/2008 | CN201036786Y Seamless steel pipe perforating machine ejector rod device |
| 03/12/2008 | CN101142304A Two-pack type anti-seizing agent for hot plastic working and method for producing seamless pipe using the same |
| 03/05/2008 | EP1894641A1 Roll for rolling seamless pipes |
| 03/05/2008 | CN201030378Y Seamless steel pipe four-roller hot sizing machine |
| 02/21/2008 | WO2008020510A1 Method for producing seamless pipe |
| 02/21/2008 | DE3809272C5 Schrägwalzwerk Cross-rolling mill |
| 02/13/2008 | CN201020478Y Transmission structure for three-roller pipe-releasing sizing-reducing mill set |
| 02/13/2008 | CN101121179A Method for processing titanium pipe used for computer mobile hard disk main shaft sleeve |
| 02/13/2008 | CN100368102C Method of manufacturing seamless tube by three-roll mandrel mill |
| 02/05/2008 | US7325429 Method for manufacturing seamless steel pipe or tube |
| 01/30/2008 | CN101112707A Process for the dynamic regulation of top head front-extending quantity |
| 01/09/2008 | EP1876254A1 Thick seamless steel pipe for line pipe and method for production thereof |
| 01/09/2008 | EP1595609B1 Seamless steel tube for drive shaft and method of manufacturing the same |
| 01/09/2008 | CN201002255Y Piercing press roller storing frame |
| 01/09/2008 | CN201002096Y Steel pipe forming machine with multi-hole type roller |
| 01/08/2008 | US7316143 Seamless steel tubes and method for producing the same |
| 12/26/2007 | EP1284167B1 Method for manufacturing seamless steel pipe |
| 12/26/2007 | CN200995221Y Mounting frame of roller for puncher |
| 12/19/2007 | CN200991705Y Rolling-roll box rolling-angle adjusting device of large horizontal perforating machine |
| 12/19/2007 | CN100355914C Martensitic stainless steel seamless pipe and a manufacturing method thereof |
| 12/18/2007 | US7308812 Process for producing seamless steel pipe |
| 12/12/2007 | CN101085452A Producing technique for steel pipe cool sizing |
| 12/05/2007 | EP1862530A1 Two-pack-type seizing inhibitor for hot plastic working and process for producing seamless tube with the same |
| 12/05/2007 | CN100352568C Tube stock for manufacturing seamless steel tube and method of manufacturing the same |
| 11/28/2007 | CN200981075Y Three-roller tube rolling machine |
| 11/28/2007 | CN101077560A Forging molybdenum plug and preparation method thereof |
| 11/28/2007 | CN101077559A Process for producing piercer point by casting and forging combination |
| 11/28/2007 | CN101077558A Method for producing super large caliber seamless steel pipe |
| 11/28/2007 | CN101077505A Seamless steel pipe restraint tandem rolling short flowpath roller milling process |
| 11/28/2007 | CN101077504A Novel process and equipment for hot-rolled seamless tube |
| 11/28/2007 | CN101077503A Method for producing large-sized seamless pipeline tube |
| 11/28/2007 | CN100351024C Large-diameter seamless steel pipe sizing-reducing mill |
| 11/22/2007 | DE102007021999A1 Verfahren zum Warmwalzen nahtloser Rohre auf einem Innenwerkzeug und Innenwerkzeug A process for hot-rolling of seamless tubes on an internal tool and an internal tool |
| 11/21/2007 | CN200977525Y Pipe expanding and perforating roof bar front extending quantity regulating device |
| 11/21/2007 | CN101073809A Triple-roller diameter reducer set |
| 11/14/2007 | CN101070579A Martensitic stainless steel seamless pipe and a manufacturing method thereof |
| 11/13/2007 | US7293443 Method for manufacturing seamless pipes or tubes |
| 11/07/2007 | CN101066547A Technologic process and special apparatus for rolling seamless steel pipe |
| 11/01/2007 | WO2007122972A1 Lubricant composition for hot plastic working and method of hot plastic working with the same |
| 10/31/2007 | CN101062506A Push-rod device for seamless steel pipe perforating machine |
| 10/24/2007 | CN100344388C Rolling mill for the fabrication of seamless tubes |
| 10/18/2007 | WO2007116821A1 Method of manufacturing seamless pipe |
| 10/10/2007 | CN101049611A Working front desk of piercing mill of seamless steel tube |
| 10/10/2007 | CN101049610A Drive structure of machine set of reducing diameter constantly through triple flaking roll |
| 10/10/2007 | CN101049606A Sizing stand of main engine seat for manufacturing seamless steel tube |