| 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) |
|---|
| 11/28/1990 | CN1047229A Technology for drawing-rolling circular pipe with long-mandrel roll die |
| 10/26/1990 | CA2015539A1 Method of reducing tubular products |
| 10/25/1990 | DE3911930A1 Prodn. process for roller stands - uses measuring rollers as standard to compare with dimensions of working rollers and produce coordinates for machining operation |
| 10/25/1990 | CA2015124A1 Method and apparatus for manufacturing seamless tubes |
| 10/11/1990 | DE3933260A1 Roller, especially for rolling mills and steel works |
| 09/20/1990 | WO1990010508A1 Roller, in particular for rolling mills and metallurgical plants |
| 08/08/1990 | EP0381116A2 Method and apparatus for shaping metal tubes into conical or tapering bodies |
| 08/02/1990 | CA2007577A1 Process and machine for the forming of metal tubes into conical or tapered bodies |
| 07/12/1990 | DE3900604A1 Apparatus for making small-diameter tubes |
| 07/10/1990 | US4939919 Roll forming machine |
| 06/05/1990 | CA1269875A1 Apparatus for guiding a billet into a pressure- piercing rolling mill |
| 04/11/1990 | EP0362502A2 Method for sizing the cross-section of a work piece by reduction during its rotation |
| 04/04/1990 | CN2055415U Two-high disc rolled pipe mill |
| 02/01/1990 | DE3825746A1 Rolling mill train for the stretch-reduction of tubes |
| 12/07/1989 | DE3819571A1 Method for controlling the wall thickness in the stretch reduction of tubes |
| 10/31/1989 | US4876870 Cold rolling |
| 07/05/1989 | CN1033584A Three roll cross rolling method for light automobile half shaft sleeve |
| 06/22/1989 | DE3742155A1 Method and apparatus for producing seamless tubes |
| 06/14/1989 | EP0320465A2 A roll forming machine |
| 02/16/1989 | DE3801621C1 Process for producing thick-walled longitudinally seam-welded steel pipes |
| 01/03/1989 | US4794776 Load-bearing structure for a continuous rolling mill for seamless tube making |
| 11/23/1988 | CN88101739A Method for manufacturing tubes, bars and strips |
| 09/06/1988 | US4768370 Rolling line for the stretch-reducing of tubes |
| 07/28/1988 | DE3701154A1 Rolling train for the hot rolling of tubes |
| 07/07/1988 | DE3642075A1 Roll for rolling stands and a method for its production |
| 06/22/1988 | EP0272204A2 Method for controlling the thickness of tubewall |
| 01/19/1988 | US4719785 Method and apparatus for guiding a billet into a pressure-piercing rolling mill |
| 01/12/1988 | US4718280 Rolling line with measuring means |
| 12/22/1987 | CA1230508A1 Base structure for supporting a gear box, particularly for the rolls of a crossed-stand type rolling mill |
| 08/19/1987 | EP0233158A1 A load-bearing structure for a continuous rolling mill for seamless tube making |
| 08/19/1987 | CN87100615A Load-bearing structure for continuous rolling mill for seamless tube making |
| 07/23/1987 | DE3601258A1 Apparatus for interchanging roll stands |
| 07/16/1987 | DE3642769C1 Method and apparatus for rolling a pierced blank into a tube blank |
| 05/14/1987 | DE3540330A1 Rolling mill, in particular continuous tube rolling mill |
| 02/10/1987 | CA1217665A Apparatus for supporting the mandrel back-up bar of an axial piercing machine for hotworking billets, ingots and the like |
| 12/30/1986 | EP0207013A2 Method and apparatus for guiding a billet into a pressure-piercing rolling mill |
| 07/02/1986 | CA1206782A Restrained mandrel mil inlet table |
| 06/03/1986 | US4592222 Device for the delivery and removal of the mandrel rods in skew and longitudinal rolling mills |
| 05/20/1986 | US4589268 Method of controlling mill pacing |
| 10/10/1985 | CN85101434A Manufacture of fin - tube |
| 09/10/1985 | CA1193120A1 Procedure and equipment for the manufacture of pipes with external and internal diameters varying in stages |
| 08/27/1985 | US4537054 Rolling unit for a bar or the like rolling mill |
| 07/23/1985 | CA1190774A1 Press-rolling process for producing a metal tubular product |
| 05/14/1985 | CA1186922A1 Continuous rolling mill with crossed stands for the production of seamless tubes |
| 12/12/1984 | EP0128112A2 Method of improving the tolerances of outside diameter and of wall thickness during size-rolling and stretch-reducing of roughly pierced tube blanks |
| 12/11/1984 | US4487049 Working mandrel and method of rolling elongate hollow pieces in a multi-stand continuous mill on same working mandrel |
| 10/23/1984 | US4478065 Continuous rolling mill with crossed stands for the production of seamless tubes |
| 06/26/1984 | US4455849 Press-rolling process for producing a metal tubular product |
| 05/01/1984 | US4445354 Procedure and equipment for the manufacture of pipes with external and internal diameters varying in stages |
| 03/27/1984 | CA1164251A1 Manufacture of seamless steel tube |
| 02/14/1984 | US4430875 Rolling mill for the stretch-reducing of tubes |
| 01/04/1984 | EP0097260A2 Rolling unit for a bar or the like rolling mill |
| 01/03/1984 | CA1159686A1 Process for manufacturing seamless metal tubes |
| 09/27/1983 | US4406143 Return pass practice for the high mill of a seamless-pipe mill |
| 09/20/1983 | US4404832 Operating a rolling mill working on seamless tubing |
| 08/09/1983 | US4397169 Rolling mill |
| 07/19/1983 | US4393677 Plugs for use in piercing and elongating mills |
| 06/07/1983 | CA1147615A1 Plugs for use in piercing and elongating mills |
| 03/29/1983 | US4377941 Rolling mills with varied size angularly displaceable roll |
| 03/01/1983 | US4375160 Manufacture of seamless steel tube |
| 01/04/1983 | CA1138689A1 Method and apparatus for manufacture of seamless metal tubing by continuous rolling |
| 10/12/1982 | US4353238 Method for manufacture of seamless metal tubing by continuous rolling |
| 08/17/1982 | CA1129686A1 Method and device for rolling tube to a smaller diameter |
| 05/04/1982 | US4327569 Tube forming mill |
| 04/06/1982 | US4323971 Adjustment means for stretch reduction rolling mills |
| 01/19/1982 | US4311033 Rolling mill roll and method of rolling |
| 10/28/1981 | EP0038702A1 Press-rolling process for producing a metal tubular product |
| 10/27/1981 | US4296622 Device for inserting and thrusting a bar into a press piercing _mill |
| 09/15/1981 | US4289012 Device for inserting and pushing a bar into a press-piercing mill |
| 09/15/1981 | US4289011 Continuous pipe rolling process |
| 06/30/1981 | US4275578 Apparatus for manufacturing tubes by continuous hot rolling |
| 06/23/1981 | CA1103484A1 Device for inserting and thrusting a bar into a press piercing mill |
| 06/16/1981 | CA1103072A1 Device for inserting and pushing a bar into a press- piercing mill |
| 06/03/1981 | EP0029786A1 Process and device for producing a steel tube without welding joint by hot-rolling on a mandrel |
| 04/21/1981 | US4262516 Pierced metal tube blanks and methods of making such blanks |
| 04/07/1981 | US4260096 Method for reduction and sizing of welded pipes and mill for effecting same |
| 03/17/1981 | US4255956 Rolling mill sizing apparatus |
| 12/23/1980 | CA1091960A1 Device for controlling the rotation of the working rollers in a tube rolling mill |
| 07/15/1980 | US4212180 Device for controlling the rotation of the working rollers in a tube rolling mill |
| 05/06/1980 | US4201070 Graphite lubricant application method |
| 04/08/1980 | US4196942 Lead-in guideway for a rolling and punching machine |
| 04/08/1980 | US4196838 Methods for the manufacture of longitudinal-seam welded tubes |
| 03/04/1980 | CA1072864A1 Combined mechanical and thermal processing method for production of seamless steel pipe |
| 02/26/1980 | US4190887 Press roll piercing method |
| 12/18/1979 | US4178789 Simultaneous plug-mill rolling for increased production and enhanced tube quality |
| 06/26/1979 | US4158954 Extraction device for continuous rolling mills using a retained mandrel |
| 05/29/1979 | CA1055282A1 Shell pusher for plug mill or the like |
| 02/13/1979 | CA1048309A1 Continuous flow plug mill system |
| 01/16/1979 | CA1046308A1 Press roll piercing method |
| 01/02/1979 | US4132096 Coating mandrels in seamless pipe mill |
| 12/12/1978 | CA1044051A1 Stretch reducing mill |
| 10/24/1978 | US4121446 Housing for a rolling mill |
| 08/15/1978 | CA1036395A1 Method of stretch reducing of tubular stock |
| 08/15/1978 | CA1036394A1 Press roll piercing method |
| 07/25/1978 | US4102711 Method of producing a tube of ultra-high strength steel having remarkably improved ductility and toughness |
| 07/11/1978 | US4099402 Stretch reducing of hollow stock |
| 06/20/1978 | US4095447 Method and rolling mill for continuous tube rolling |
| 05/30/1978 | US4091650 Rolling mill for forming seamless tubes, and seamless tube-making apparatus comprising such a mill |
| 05/02/1978 | US4086800 Process and rolling mill for stretch reduction of tubes |
| 02/21/1978 | US4075041 Combined mechanical and thermal processing method for production of seamless steel pipe |