| Patents for B21D 41 - Application of procedures in order to alter the diameter of tube ends (2,982) |
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| 07/20/2011 | CN201900193U Roll-in device for drawing part of seamless steel tube |
| 07/20/2011 | CN201900171U Flaring die for special-shaped bent pipe |
| 07/20/2011 | CN101502862B Method for processing straight-shaped vertical tube of motorcycle |
| 07/19/2011 | US7980107 Variable diameter pipe expander |
| 07/15/2011 | CA2720535A1 Reflare tool and process |
| 07/14/2011 | US20110167889 Expanding die and method of shaping containers |
| 07/13/2011 | CN201895047U Bass sun elbow rolling sealing machine |
| 07/13/2011 | CN201895046U Metal pipe end opening diameter expansion tool |
| 07/06/2011 | CN102114512A Method for closing-in forming of aluminium rigid tube |
| 07/06/2011 | CN101310886B Method and device for producing pipe connections |
| 06/30/2011 | DE102010004426A1 Vorrichtung zum Aufweiten von Hohlkörpern An apparatus for expanding hollow bodies |
| 06/29/2011 | EP2337591A1 Device for opening a line |
| 06/29/2011 | EP1689539B1 Method for producing a coupling on a pipe and device for producing said coupling |
| 06/29/2011 | CN201880810U Pipe end bottleneck type necking mould for pipes |
| 06/29/2011 | CN201880809U Universal spinning closing-in device for guide pipes |
| 06/29/2011 | CN201880808U Insert compression-molding type closing-in machine |
| 06/29/2011 | CN201880807U Automatic hydraulic mouth bulging machine |
| 06/29/2011 | CN201880806U High-speed automatic pipe reducing machine |
| 06/23/2011 | US20110146367 Flared Cone Fitting |
| 06/22/2011 | DE102010000175A1 Schnell zusammensetzbares Rohraufweitgerät Quickly assembled Rohraufweitgerät |
| 06/22/2011 | CN201871626U Force-control swing-grinding type rolling sealing machine |
| 06/22/2011 | CN201871625U Horn mouth expanding device |
| 06/22/2011 | CN201871600U Vertical gas cylinder necking-in machine with three rollers |
| 06/22/2011 | CN102101135A Head hitting device of steel pipe |
| 06/22/2011 | CN101564738B Machining process of directly pulling steel round rope into flat rope |
| 06/21/2011 | US7963142 Radial compression mechanism with optimum die-to-die gap |
| 06/16/2011 | US20110138872 Tube expanding method for heat exchanger tubes and tube expanding apparatus for heat exchanger tubes |
| 06/15/2011 | EP2332716A2 Bulging die device for clips on a machine for making sockets on the ends of pipes made from plastic or composite material |
| 06/15/2011 | EP2167250B1 Device and method for the axial forming of elongated hollow bodies |
| 06/15/2011 | CN201862701U Pipe belling device |
| 06/15/2011 | CN102091744A Double-end outer barrel necking-in machine |
| 06/08/2011 | CN201855885U Multi-pass necking mould for thin-wall shaped cylindrical piece |
| 06/08/2011 | CN201855884U Circular tube sealing device for bathroom |
| 06/08/2011 | CN201855883U Novel automatic cutting tube end machine |
| 06/01/2011 | CN201848485U Mold for thickening pipe nipple oil pipe |
| 05/31/2011 | US7950153 Method of manufacturing a steering rack |
| 05/25/2011 | CN201841210U Novel automated hydraulic three-station steel pipe flaring machine |
| 05/25/2011 | CN102069129A Pipe fitting shrinking machine |
| 05/25/2011 | CN101269394B Hollow rack and manufacturing method, hollow rack end diameter reducing method and apparatus |
| 05/24/2011 | US7946147 Tube expanding method and apparatus of damper tube |
| 05/19/2011 | WO2011035840A3 Device for expanding hollow bodies |
| 05/18/2011 | CN201832917U Necking machine mechanism of can making machinery |
| 05/18/2011 | CN201832911U Cantilever horizontal type expansion reducing machine of steel drum |
| 05/18/2011 | CN201832910U Pipe end forming equipment of double clamped die |
| 05/18/2011 | CN102059297A Hole extruding and expanding device for extruding and expanding inner holes at end of rear axle tube of vehicle |
| 05/12/2011 | WO2011056065A1 Device for forming a flared hoop, mandrel, method for forming a flared hoop, flared hoop |
| 05/11/2011 | CN201823837U Multi-roller precise flaring working head |
| 05/11/2011 | CN201823836U Pipe end calibrator |
| 05/11/2011 | CN201823828U Multipurpose mold |
| 05/11/2011 | CN102049448A Cutting pipe end machine |
| 05/10/2011 | CA2644176C A mechanical pipe-end expander and a method of manufacturing seamless steel pipe |
| 05/05/2011 | US20110104512 Stretched strips for spacer and sealed unit |
| 05/04/2011 | CN201815601U Processing apparatus for cold extrusion reducing |
| 05/04/2011 | CN101607279B Multi-location cold-extrusion molding method of tube blank of hit anchor |
| 04/27/2011 | CN201807666U Thin-wall special cylindrical piece externally supporting fixture |
| 04/27/2011 | CN201807665U Pipe capping machine |
| 04/27/2011 | CN201807664U Table-type pipe reducing machine |
| 04/27/2011 | CN101480681B Vertical type rod expanding arbor machine capable of automatically selecting expanding arbor row number |
| 04/26/2011 | US7930826 Method for manufacturing a fastening portion for a steering apparatus |
| 04/26/2011 | CA2474019C Method and forming machine for manufacturing a product having various diameters |
| 04/21/2011 | DE102009044279A1 Verfahren zur Herstellung eines Wandanschlussstücks A method for producing a wall connection piece |
| 04/20/2011 | CN201799535U Tube end sizing mill |
| 04/20/2011 | CN102019328A Low tuba elbow rolling and sealing machine |
| 04/20/2011 | CN102019327A Rolled pipe end former |
| 04/20/2011 | CN102019326A Mechanical pipe end forming machine |
| 04/19/2011 | US7926319 Mandrel assembly and method of using the same |
| 04/14/2011 | WO2011018061A8 Contact pin for use on illumination means and method for the production thereof |
| 04/13/2011 | CN201791854U Seamless steel tube receding machine |
| 04/13/2011 | CN201791853U Automatic expanding machine for copper tube |
| 04/13/2011 | CN201791833U Tube end belling mould of metal tube |
| 04/13/2011 | CN201791810U Mechanical pipe end former |
| 04/13/2011 | CN102015145A Method and apparatus for radially expanding a container body, such radially expanded container body and a container comprising such container body |
| 04/13/2011 | CN102009348A Device for automatically expanding and punching pipe fittings |
| 04/13/2011 | CN102009344A Automatic pipe machining machine |
| 04/13/2011 | CN102009104A Force-controlled rocking-rolling type rolling sealing machine |
| 04/06/2011 | CN201788395U Steel pipe expanding rate measurement and control device |
| 04/06/2011 | CN102000733A Production process for flanging and necking deep-drawing products |
| 04/06/2011 | CN101670405B Necking machine for copper pipe |
| 04/06/2011 | CN101623814B Method for sealing heat pipe of thermal module |
| 04/06/2011 | CN101394953B Method of producing a steering gear shaft part |
| 04/06/2011 | CN101180144B Three-piece square can and its manufacture method |
| 03/23/2011 | CN201768844U Pendulum-type bidirectional expander |
| 03/17/2011 | WO2011029687A1 Screwed pipe joint and method for the production thereof |
| 03/16/2011 | EP2295161A1 Pipe clamp device |
| 03/16/2011 | CN201760512U Variable-diameter pipe hydraulic forming device |
| 03/16/2011 | CN201760505U Lorry axle housing inner swelling forming die |
| 03/16/2011 | CN201760504U Lorry axle housing inner swelling & necking die |
| 03/16/2011 | CN101537460B Thin-walled multiply bellows straight-side port closing device |
| 03/10/2011 | US20110056086 Drum for washer and dryer |
| 03/10/2011 | DE102010037387A1 Reduction tool for tube utilized for production of needle-like ballpoint pen tip, has shaping hole formed on line on side of rod-shaped body to reduce diameter of tube for tip element by interference-fitting of end of tube into end of hole |
| 03/09/2011 | CN201755368U Roller and treadmill using roller |
| 03/01/2011 | US7895876 Method of crimping a prosthetic valve |
| 03/01/2011 | US7895875 Methods and systems for reducing tensile residual stresses in compressed tubing and metal tubing products produced from same |
| 02/23/2011 | CN201751042U Flaring mould of pipe fitting |
| 02/17/2011 | WO2011018061A1 Contact pin for use on illumination means and method for the production thereof |
| 02/17/2011 | DE102008061441B4 Rohraufweitvorrichtung Rohraufweitvorrichtung |
| 02/16/2011 | CN201744581U Automatic mortising machine |
| 02/16/2011 | CN201744580U Thin-wall abnormity copper pipe opening-sealing die |
| 02/15/2011 | US7886661 Radial compression mechanism |
| 02/15/2011 | US7886569 Crimper |