| Patents for B21D 41 - Application of procedures in order to alter the diameter of tube ends (2,982) |
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| 01/17/2002 | DE10031989A1 Verfahren und Vorrichtung zur Herstellung von Pressfittings aus Stahl, insbesondere Edelstahl Method and apparatus for the production of press fittings made of steel, in particular stainless steel |
| 01/15/2002 | US6338189 Method and apparatus for expansion forming a workpiece using an external deformable supporting fixture |
| 01/10/2002 | WO2002002255A1 Method and device for producing steel, especially stainless steel press fittings. |
| 12/19/2001 | CN2465834Y Thermal conduction tube reducing machine |
| 12/12/2001 | CN2464473Y Diameter reducer for stainless steel and plastics composite pipe |
| 12/12/2001 | CN2464472Y Diameter enlarging machine |
| 12/11/2001 | CA2216930C Process for manufacturing a deformed metal can having a reshaped can body wall |
| 12/06/2001 | DE10024647A1 Verfahren zur Vorbereitung eines Rohranfanges für das Ziehen über einen Ziehdorn Process for the preparation of a pipe beginning for pulling a mandrel |
| 12/05/2001 | EP1160027A1 Expansion plier |
| 11/22/2001 | US20010042394 Process for preparing the end of a Pipe for drawing over a mandrel |
| 11/21/2001 | EP1155759A2 Method of preparing a tube end for pulling over a mandrel |
| 11/14/2001 | EP1152843A1 Sealing method and press apparatus |
| 11/14/2001 | CN2459111Y End hole shrinking mechanism for pipe material |
| 11/07/2001 | EP1151812A1 Spinning device |
| 11/07/2001 | EP1151180A1 Tubing anchor |
| 11/01/2001 | US20010035038 Modular system for expanding and reducing tubing |
| 10/24/2001 | EP1147287A2 Procedures and equipment for profiling and jointing of pipes |
| 10/24/2001 | EP1146973A1 Method for deforming a tube in the proximity of one of its ends and tool therefor |
| 10/18/2001 | DE10027306C1 Method to shape round end of pipe to form polygonal cross-section involves pressing pipe end to form cambered cross-section, inserting support mandrel and shaping pipe end with calibration ring |
| 10/17/2001 | EP1144802A2 Profile formation |
| 10/11/2001 | US20010027675 Method of forming an eccentrically expanded pipe and eccentrically pipe-expanding device |
| 10/10/2001 | EP1142656A2 Pipe shaping method |
| 10/10/2001 | EP1141517A1 Drilling method |
| 10/10/2001 | EP1141515A1 Method and apparatus for expanding a liner patch |
| 10/03/2001 | CN2451262Y Machine for reducing the diameter of tube end |
| 10/03/2001 | CN2451261Y Pipe end turnup machine |
| 10/03/2001 | CN2451260Y Metal thin wall gyrorotor flaring spinning machine tool |
| 10/03/2001 | CN2451259Y Former for pipe end forming machine |
| 10/02/2001 | US6295856 Spindle mechanism of drawer |
| 09/27/2001 | WO2001070424A2 Methods and apparatus for retrofitting compressible flanges |
| 09/20/2001 | US20010022100 Pipe shaping method |
| 09/13/2001 | DE10040596C1 Device for cold press reshaping of pipe ends clamps a workpiece with a first hydrodynamically operated force transmission element while later reshaping it with a second hydrodynamically operated force transmission element. |
| 09/06/2001 | DE10100990A1 Device for extending pipes comprises an adjusting/pivoting arrangement having a spindle and an element which moves in the axial direction of the pipe to be extended |
| 08/28/2001 | US6279364 Sealing method and press apparatus |
| 08/28/2001 | US6279289 Metal framing system |
| 08/22/2001 | CN1069852C Method and equipment for reducing tube end by roll forging |
| 08/08/2001 | EP1121998A1 Method and device for expanding tube material |
| 07/26/2001 | DE10002540A1 Method to reduce the ends of esp. a tubular catalytic converter housing uses pressure rollers positioned about tube to apply radial pressures to tube ends |
| 07/25/2001 | EP1118401A1 Expanding device for forming bells at tube ends |
| 07/17/2001 | US6260403 Method and apparatus for arching large diameter pipes |
| 07/17/2001 | US6260401 Method of molding high expansion pipe and the high expansion pipe |
| 07/11/2001 | CN2438525Y Waste oil pipe retreading apparatus using on hydraulic two-step propelling pipe-making machine |
| 07/10/2001 | US6257036 Metallic shaft material diameter increasing device |
| 07/04/2001 | CN2437427Y Metal pipe end closing mahcine |
| 06/13/2001 | CN2434080Y Section bar shaping machine |
| 06/13/2001 | CN1066987C Method and apparatus for constricting tube wall |
| 06/07/2001 | WO2001039907A1 Method for deforming a tube in the proximity of one of its ends and tool therefor |
| 05/23/2001 | CN2431063Y Explosion lining device for metal pipeline |
| 05/23/2001 | CN2431062Y Hydraulic lining device for metal pipeline |
| 05/22/2001 | US6233998 Easy mode pipe-reducing device |
| 05/22/2001 | US6233993 Method and apparatus for forming a processed portion of a workpiece |
| 05/17/2001 | DE19953997A1 Prodn of an automobile exhaust catalyst housing uses a tubular fine steel workpiece which is pressed against a conical die at each end in turn to give the double-funnel shape with angled zones |
| 05/17/2001 | DE19953525A1 Fabrication method for formed tubular part e.g. camshafts etc. uses conical forming mandrel with initial RPM 20% lower than component RPM |
| 05/16/2001 | CN1065806C Press head of hydraulic tool |
| 05/15/2001 | US6230540 Method and apparatus for forming an integral bearing shoulder in a tubular axle |
| 05/10/2001 | WO2001033674A1 Pressing tool device in particular a crimping tool device |
| 05/10/2001 | DE10042896A1 Toroidal ring formation involves compressing cylindrical material from base edge side and shaft core direction to plastically deform and reduce bottom diameter, such that ring is formed by punching |
| 05/10/2001 | DE10040173A1 Vorrichtung zum Aufweiten und Formen von Dosenkörpern An apparatus for expanding and forming of can bodies |
| 05/09/2001 | EP1097761A1 Device for forming tube ends |
| 05/09/2001 | EP1097757A1 Method and apparatus for controlling the quality of deformations realised by a machine for forming the ends of tubes |
| 05/09/2001 | EP1097756A1 Machine for forming the ends of tubes and forming apparatus with two working units |
| 04/25/2001 | CN2427124Y Pneumatic rod shaft tube of improved structure chair |
| 04/19/2001 | WO2001026837A1 Spinning device |
| 04/18/2001 | EP1092922A2 Boiler tube flared-end compression tool |
| 04/18/2001 | CN2426774Y Machinery for processing ring groove of metal pipe fitting |
| 04/18/2001 | CN2426773Y Multi-stage serial pipe diameter reducing machine |
| 04/18/2001 | CN2426772Y Balanced four-gear groove mill head |
| 04/17/2001 | US6216512 Method and apparatus for forming a processed portion of a workpiece |
| 04/12/2001 | WO2001024955A1 Method of crushing a tube |
| 04/12/2001 | CA2386364A1 Method of crushing a tube |
| 04/05/2001 | WO2000047927A3 Apparatus for swaging an object |
| 03/29/2001 | WO2001021338A1 Making closed end tubes for surgical instruments |
| 03/29/2001 | CA2385585A1 Making closed end tubes for surgical instruments |
| 03/28/2001 | CN2424847Y Improved structure of polygon tank working device |
| 03/27/2001 | US6205632 Boiler tube flared-end compression tool |
| 03/14/2001 | CN2423044Y Working cylinder channelling special machine |
| 03/13/2001 | US6199421 Double flare gauge and forming tool for tubing |
| 03/01/2001 | DE19940744A1 Radial press has housing consisting of two opposed plate, several frame bars; press yokes are accommodated between plates; frame bars and drive assembly(ies) are held between plates |
| 02/28/2001 | EP1079192A2 Method of manufacturing a flat corrugated tube |
| 02/27/2001 | US6192561 Cartridge case former and method |
| 02/07/2001 | CN1282638A High-strength multi-style integral shaping, enclosing and manufacture method of tubular body |
| 01/31/2001 | CN2416975Y Device for automatically mfg. probe |
| 01/17/2001 | CN1280517A Method for making catalytic converter |
| 01/16/2001 | US6173598 Modular multipurpose bending machine and its linear positioning system |
| 01/03/2001 | EP1065016A1 Method of manufacturing a hollow shaft having a flange at one end thereof |
| 01/02/2001 | US6169268 Method and apparatus for forming the ends of metallic tubes |
| 01/02/2001 | US6167983 Process for production of tube profile element with swaged closed head end and muffler suspension produced thereby |
| 12/28/2000 | WO2000078479A1 Method and device for expanding tube material |
| 12/27/2000 | CN2411861Y Rolling type contracted pipe machine |
| 12/20/2000 | EP1060809A1 Tube expanding tool |
| 12/07/2000 | WO2000072993A1 Apparatus for automatically flaring a tube end |
| 12/07/2000 | DE19924898A1 Aufweitwerkzeug für Rohre Flaring tool for pipes |
| 12/06/2000 | CN2408987Y Numerically controlled and servo device for spinning reducing machine |
| 11/30/2000 | DE19924695A1 Expander tool for plastic- or plastic-covered metal pipe ends, has true cylindrical working surfaces when its sectors are drawn together, produced by grinding |
| 11/28/2000 | US6151949 Method of manufacturing a flat corrugated tube |
| 11/22/2000 | EP1053799A2 Method and apparatus for forming a processed portion of a workpiece |
| 11/22/2000 | EP1053065A1 Method for producing pipes to be connected in a double-wall piping system and implementing machine |
| 11/22/2000 | CN1274060A Expansion shaped insertion-type steel tubes for both flexible and rigid joining and its manufacture technology |
| 11/16/2000 | WO2000037766A3 Procedures and equipment for profiling and jointing of pipes |
| 11/15/2000 | EP1052035A1 Spindle mechanism of drawer |