| 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) |
|---|
| 05/01/1996 | CN1121581A Belt tub with muti-web and manufacture of same |
| 04/24/1996 | CN1120981A Correction of roller of oblique roller rolling mill |
| 04/17/1996 | CN1120475A Technique for continuously drawing pipe using long rod rolling mould |
| 03/27/1996 | EP0703015A1 Calibration for the rolls of a skew-rolling mill |
| 03/26/1996 | US5501091 Method and apparatus for elongating metal tubes by means of a mandrel mill |
| 03/14/1996 | DE19532643A1 Mandrel pipe-rolling installation, and method for producing seamless pipes |
| 03/05/1996 | CA2076402C Mandrel mill for seamless steel tubes |
| 02/28/1996 | EP0698426A1 Mandrel changer for plug-mills |
| 02/22/1996 | DE4428530A1 Pipe mfr., e.g. cross-rolling of pipes with medium or low wall thickness |
| 02/07/1996 | CN2219166Y Self-centring three-roller protector |
| 01/31/1996 | CN1115696A Piercing head and tube-rolling method for rolling thin-wall hollow billet in two-high mill |
| 01/18/1996 | DE19506858C1 Roll pass design for 3-roll passes of mandrel-less tube reducing mills |
| 01/17/1996 | EP0692322A2 Method and apparatus for shaping metal tubes into conical or tapening bodies |
| 12/21/1995 | WO1995034387A1 Method of producing a seamless hot-finished tube |
| 12/21/1995 | CA2192970A1 Method of producing a seamless hot-finished tube |
| 12/20/1995 | EP0687880A1 Tube with a plurality of spiral ribs and method of manufacturing the same |
| 11/30/1995 | DE4420756C1 Ribbed heat exchanger tube |
| 11/21/1995 | US5467625 Arrangement for adjusting of three rollers or guiding rolls which together form a caliber opening |
| 09/28/1995 | DE4433397C1 Set-up of the rolls of a skew rolling mill |
| 09/05/1995 | CA2071428C Mandrel mill capable of preventing stripping miss |
| 08/30/1995 | CN1107394A Central line measuring and correction technique for metal pipe rolled by piercing mill |
| 08/30/1995 | CN1107391A Rolling machine with multi-frame |
| 08/30/1995 | CN1107390A High-efficiency pipe cold-mill |
| 08/15/1995 | US5440911 Pre-reduction equipment and method |
| 06/13/1995 | US5423201 Apparatus for continuously shaping a metal tube |
| 06/08/1995 | DE4340813A1 Lubricant heating equipment and a lubrication system for internal tooling in tube mills |
| 05/31/1995 | EP0655283A2 Multiple-stand rolling mill |
| 05/09/1995 | US5412974 Method of producing seamless pipes utilizing a plug rolling procedure |
| 05/04/1995 | DE4335063C1 Cold pilger rolling mill for the cold-rolling of tubes (pipes) |
| 04/27/1995 | DE4403339A1 Apparatus for the final shaping of a tube produced by electrical resistance welding |
| 03/28/1995 | US5400636 Fluting machine and method of producing a fluted pole |
| 03/22/1995 | CN1100346A Producing method for ultra-high precision, small bore and extra-thick wall hot-rolled pipe |
| 03/22/1995 | CN1100345A Rapid multistrand pipe mill |
| 03/15/1995 | CN1100010A Trommel rolling method for tail end of continuously rolled pipe |
| 01/05/1995 | DE4339228C1 Multi-stand rolling train |
| 12/01/1994 | DE4318931C1 Method for the production of welded tubes |
| 10/25/1994 | US5357773 Method of longitudinal rolling of seamless pipe |
| 10/19/1994 | CN1093623A Tube mill for synchronously rolling to produce seamless reductor |
| 10/19/1994 | CN1093622A Method and apparatus for elongating metal tubes by means of a mandrel mill |
| 10/18/1994 | US5355704 Method and arrangement for adjusting of three rollers or guiding rolls which together form a caliber opening |
| 07/26/1994 | US5331835 Rolling stand, having three or more driven and adjustable rollers |
| 06/15/1994 | EP0601932A1 Method and apparatus for elongating metal tubes by means of a mandrel mill |
| 06/15/1994 | EP0601680A1 Method of guiding a rough-pierced tube blank |
| 04/27/1994 | EP0593709A1 A rolling stand for generic rolling mills having three or more adjustable driven rolls. |
| 04/14/1994 | DE4232916A1 Assuring a required final temperature of pipes rolled from pipe blooms - with reheating taking place between the descaling unit and the cooling bed |
| 04/06/1994 | CN1084788A Making method of two-direction inner-diameter changeable pipe material |
| 03/31/1994 | DE4243688C1 Aligning rough workpiece in front of error reduction roller mechanism - involves altering entry orientation according to measured geometry errors |
| 03/30/1994 | CN2159835Y Full auto device for rolling large and middle rolling seamless steel tube |
| 02/09/1994 | EP0582562A1 Device for continuous forming of a metallic tube |
| 12/29/1993 | CN1079923A A rolling stand for generic rolling mills having three or more adjustable driven rolls |
| 12/15/1993 | CN1023083C Method for producing straight-tooth shape inside ribbed pipe |
| 11/02/1993 | US5257716 For transferring a metallic tubular product |
| 10/28/1993 | WO1993020960A1 A rolling stand for generic rolling mills having three or more adjustable driven rolls |
| 10/27/1993 | EP0567203A2 Method for influencing the friction between roll and rolling stock, in particular for the rolling of pipes |
| 10/27/1993 | CN1077665A A rolling stand having three or more driven and adjustable rollers |
| 10/20/1993 | EP0566223A1 Method for manufacturing seamless pipes by the plug rolling process |
| 10/20/1993 | EP0565772A1 A rolling stand, having three driven and adjustable rollers |
| 09/22/1993 | CN1022170C Special steel tubes rolling and extruding equipment |
| 08/04/1993 | CN2139482Y Rolling mill machine for making thin wall curved tube |
| 08/03/1993 | US5231859 Fluting machine |
| 07/14/1993 | CN2137996Y Extraordinarily long pipe rolling apparatus for multiple-roller cooling pipe roller |
| 06/15/1993 | US5218851 Mandrel mill capable of preventing stripping miss |
| 05/19/1993 | EP0542387A1 Method of longitudinal rolling seamless pipes |
| 05/19/1993 | DE4137451A1 Adjustment of three roll assembly defining common calibre opening - involves using triangular and hexagonal patterns to ensure a common focal point for each roll, allowing rapid and accurate adjustment |
| 05/19/1993 | CN1020682C Improved hot-rolling process for seamless tubes with preliminary diameter reduction of semifinished products |
| 04/22/1993 | DE4134178A1 Hollow ribbed reinforcement bar prodn. - by flattening starter tube and ribbing outer surface by rolling with profiled rolls |
| 04/21/1993 | CN2130117Y Cold roll seamless led-antimony pipe making machine |
| 03/03/1993 | EP0529943A2 Mandrel mill for seamless steel tubes |
| 02/23/1993 | CA1313780C Method for manufacturing tubes, bars and strips |
| 01/27/1993 | CN1019877C Technology for drawing-rolling circular pipe with long-mandrel rool die |
| 12/23/1992 | EP0519705A2 Mandrel mill capable of preventing stripping miss |
| 11/11/1992 | CN1066012A Straight-toothed internal ribbed pipe production technology |
| 10/20/1992 | US5156035 Method and apparatus for manufacturing seamless tubes |
| 06/25/1992 | WO1992010316A1 Method of controlling continuous tube rolling mills |
| 06/17/1992 | DE4141086A1 Verfahren zur steuerung von rohrkontiwalzwerken Method for controlling rohrkontiwalzwerken |
| 06/11/1992 | DE4039741A1 Rolling pipes with control of temp. distribution - using measured geometry at rolling mechanism outlet to control local heating and/or cooling using on=line processor |
| 05/05/1992 | US5109689 Hot-rolling process for seamless tubes with preliminary diameter reduction of the semifinished products |
| 05/05/1992 | CA1299902C Load-bearing structure for a continuous rolling mill for seamless tube making |
| 03/25/1992 | EP0476793A2 Rolling mill for stretching hollow blanks on a mandril |
| 01/29/1992 | EP0468905A1 Method and device for eddy-current testing of metal tubes during hot-rolling |
| 01/08/1992 | CN1057600A Working stand of cold tube-rolling mill |
| 10/09/1991 | CN1014208B Load-bearing structure for continuous rolling mill for seamless tube making |
| 09/19/1991 | DE4039369C1 Prodn. of metal tubes - involves cooling mandrel head and allowing thermal expansion to increase tube ID |
| 09/04/1991 | CN1054205A No-twist slit-rolling approach ("nta") apparatus and method for manufacturing steel reinforcing rod |
| 08/20/1991 | US5040399 Method of fabricating box section from steel with walls that differ in thickness |
| 08/12/1991 | CA2009868A1 Machine for roll-forming a corrugated cylindrical sheath |
| 08/07/1991 | EP0440009A2 Device and method for the modulated cooling of a moving cylindrical object |
| 06/12/1991 | CN1052063A Improved hot-rolling process for seamless tubes with preliminary diameter reduction of semifinished products |
| 06/05/1991 | EP0430909A2 Improved hot-rolling process for sealess tubes with preliminary diameter reduction of the semifinished products |
| 06/05/1991 | EP0429564A1 Roller, in particular for rolling mills and metallurgical plants |
| 04/10/1991 | CN1050507A Special steel tubes rolling and extruding equipment |
| 03/26/1991 | US5001916 Method for the calibrated cross-section reduction of a workpiece rotating during such method. |
| 03/06/1991 | CN1049618A Stretching-homogenizing device for mfg. circular hollow objects of seamless steel tube |
| 02/26/1991 | US4995252 Method and apparatus for internally enhancing heat exchanger tubing |
| 02/21/1991 | WO1991001824A1 Device for elongating and equalizing round hollow blanks for the manufacture of seamless tubes |
| 01/31/1991 | DE3924261A1 Groove contour on three roller reducing mill for e.g. pipe - is shaped to prevent unwanted deformation on inside contour of pipe |
| 01/15/1991 | US4984444 Method of reducing tubular products |
| 01/02/1991 | EP0405065A2 Method of producing rectangular hollow sections of steel with differential wall thickness |
| 12/13/1990 | WO1990014900A1 Drilling roller/press for producing round, hollow bodies |
| 12/12/1990 | CN1047637A Press drilling mill for fabrication of round hollow objects |