| Patents for B21D 41 - Application of procedures in order to alter the diameter of tube ends (2,982) |
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| 02/10/2011 | WO2011016434A1 Plug for expanding end of metal pipe, method for expanding pipe using plug, and method for manufacturing metal pipe |
| 02/09/2011 | CN201735661U Mechanical forming machine for pipe ends |
| 02/09/2011 | CN201735660U Mechanical type pipe fittings end forming machine |
| 02/03/2011 | WO2011011893A1 Apparatus and method for forming an antipollution device housing |
| 02/03/2011 | US20110023573 Die carrier assembly and crimping process |
| 02/03/2011 | CA2769348A1 Apparatus and method for forming an antipollution device housing |
| 01/26/2011 | CN201720359U Steel cylinder shell nosing shaping scraping die |
| 01/26/2011 | CN201720353U Expansion pipe manufacturing tooling and device thereof |
| 01/26/2011 | CN101954419A Steel-drum cantilever horizontal port expanding and necking machine |
| 01/26/2011 | CN101954418A Method for manufacturing thin-wall cylindrical member necking die |
| 01/26/2011 | CN101590506B Turntable type automatic tube expander |
| 01/19/2011 | CN201711441U Slide seat installing structure for pipe end sizing mill |
| 01/19/2011 | CN201711434U Necking die of x-ray anode cap |
| 01/19/2011 | CN201711426U Tube end sizing mill float type mould head installation structure |
| 01/19/2011 | CN101947606A Insert mould pressing type necking machine |
| 01/19/2011 | CN101947605A Shell nosing devivce for detonating tubes |
| 01/19/2011 | CN101947604A Pendulum-type bidirectional expanding machine |
| 01/13/2011 | US20110005294 Die Element |
| 01/12/2011 | EP2273064A1 Procedures and equipment for profiling and jointing of pipes |
| 01/12/2011 | CN201702279U Dedicated device for closing in controlled steel cylinder |
| 01/12/2011 | CN201702278U Self-locking threaded sleeve shell nosing die |
| 01/12/2011 | CN201702277U Petroleum seamless steel pipe retreading machine |
| 01/05/2011 | CN201693091U 缩径机 Necking machine |
| 01/05/2011 | CN201693090U Ring rolling machine |
| 01/05/2011 | CN201693089U Horn mouth expander |
| 01/05/2011 | CN101934320A Manufacturing process to produce a necked container |
| 01/04/2011 | US7861572 Method and device for making at least partly profiled tubes |
| 01/04/2011 | CA2645932C Apparatus for pipe end sizing and method for pipe end sizing |
| 12/30/2010 | US20100326557 Method for the production of hot-finished seamless pipes having optimized fatigue properties in the welded state |
| 12/30/2010 | DE102009030152A1 Verfahren und Vorrichtung zur Prozessüberwachung und Prozessregelung beim Expandieren von UOE-Rohren aus Stahl Method and apparatus for process monitoring and process control during the expansion of UOE steel tubes |
| 12/29/2010 | EP2007534B1 Bearing assemblies |
| 12/29/2010 | CN201684853U Rolling type necking machine for drier casing |
| 12/29/2010 | CN201684852U Radial pressure applying reducing die of flexible metal tube |
| 12/29/2010 | CN201684851U Header pipe-end necking processing device |
| 12/29/2010 | CN101927301A Cold compression necking process of reducing short tube |
| 12/28/2010 | US7856861 Swage presses |
| 12/22/2010 | CN201676974U Automatic necking machines on both ends of outer barrel of solar water heater |
| 12/22/2010 | CN201676973U Necking machine device |
| 12/22/2010 | CN201676972U Mouth enlarging mold |
| 12/22/2010 | CN101920481A Clamping device for water pipe connector |
| 12/22/2010 | CN101920295A Automatic six-working position rotary expanding pipe-end forming device |
| 12/21/2010 | US7854156 Closing device and closing method |
| 12/16/2010 | WO2010142554A1 Press fitting, method for producing press fittings, and tools therefor |
| 12/15/2010 | CN201669345U Automobile radiator core flaring device |
| 12/14/2010 | US7849724 Method of manufacturing a ring-shaped member |
| 12/08/2010 | EP2258537A1 Bulging die device for clips on a machine for making sockets on the ends of pipes made from plastic or composite material. |
| 12/08/2010 | CN201664733U Swing arm device of necking machine |
| 12/08/2010 | CN101564749B Gas-liquid vibration absorber charging-sealing device |
| 12/02/2010 | US20100300173 Heading device |
| 12/02/2010 | DE102009022957A1 Kopfstauchvorrichtung Head clincher |
| 12/01/2010 | CN201659218U Cover machine used for molding machining of steel cylinder mouth |
| 12/01/2010 | CN101559447B Thin wall pipe connector and processing method thereof |
| 12/01/2010 | CN101474651B Integrated pipe bender |
| 11/24/2010 | CN201644662U Pipe-shrinkage machine |
| 11/24/2010 | CN201644661U Multifunctional flaring former |
| 11/24/2010 | CN201644660U Special-shaped three-way disposable scalable opening mold |
| 11/24/2010 | CN201644574U Pipe bender with hole expanding function |
| 11/24/2010 | CN101890627A Hot-expanding method for seamless steel tube for natural gas bottle |
| 11/23/2010 | US7836741 Rotary expansion |
| 11/17/2010 | CN201632561U Opening tightening-finishing combined die for products of barrel series |
| 11/11/2010 | DE10306533B4 Vorrichtung zum Verformen rotationssymmetrischer Endstücke an Öffnungen von Hohlkörpern An apparatus for forming a rotationally symmetrical end portions of openings of the hollow bodies |
| 11/10/2010 | CN201625736U Full-automatic NC necking machine |
| 11/10/2010 | CN201625735U Metal pipe belling former |
| 11/10/2010 | CN201625734U Automatic tube cutting device for dual-tube expander |
| 11/10/2010 | CN201625710U Flaring die for steel wheel rim of passenger car |
| 11/10/2010 | CN101883646A Self-crimping fill tube assembly |
| 11/10/2010 | CN101879559A Port sealing process of heating container of electric water heater |
| 11/10/2010 | CN101879558A Automatic cooling, scavenging and lubricating system of drill stem thickening machine |
| 11/10/2010 | CN101879545A Forming machine for end part of mechanical type pipe fitting |
| 11/03/2010 | CN201618812U Gripping jaw mechanism of four-point shrinking machine |
| 11/03/2010 | CN201618811U Pipe expanding device |
| 10/27/2010 | EP2242596A1 Self-crimping fill tube assembly |
| 10/27/2010 | CN101869948A Horn mouth expansion machine |
| 10/27/2010 | CN101532793B Sealing equipment of boiling and exhaust of semi-automatic heat pipe |
| 10/21/2010 | WO2010118625A1 Sealing device for straight edge end of multilayer thin-walled corrugated pipe |
| 10/20/2010 | CN1772432B Machining process of liquid pipe for gas-liquid separator |
| 10/20/2010 | CN101862798A Method for composite forming of jar mouth type large-caliber thin-wall pipe |
| 10/20/2010 | CN101862781A Mechanical pipe fitting end forming machine |
| 10/20/2010 | CN101862780A Mechanical pipe fitting end forming machine |
| 10/14/2010 | US20100257913 Resilient Anchor |
| 10/13/2010 | CN101856697A Reaming machine |
| 10/06/2010 | EP2236922A2 Tube element, gas-operated device and method for manufacturing a tube element |
| 10/06/2010 | CN201596712U 密封罩的收口模具 Sealed cover shut mold |
| 09/22/2010 | CN201586708U Reducing fixture for preventing elongation of workpiece in inner and outer covers |
| 09/21/2010 | US7797979 Crimping apparatus including a tool for supporting a plurality of crimping members |
| 09/21/2010 | US7797806 Internal high-pressure shaping method for shaping conical tubes made of metal |
| 09/15/2010 | EP2228151A2 Tool for expanding a workpiece |
| 09/15/2010 | CN101829736A Disposable flaring and necking mould of profiled tee joint |
| 09/14/2010 | US7793532 Protective sheet loader |
| 09/08/2010 | EP2226182A2 Method for expanding one end of a pipe made from plastic or composite material using a bulging die device for clips or a machine for making sockets on the ends of pipes made from plastic or composite material, and bulging die device for implementation thereof |
| 09/08/2010 | CN201572858U Pipe reducing machine |
| 09/08/2010 | CN101823208A Installation structure for clamping cylinder bases in double-end pipe end forming machine |
| 09/02/2010 | DE102008061442A1 Expanding device for ends of pipeline, has mandrel arranged in housing, and expanding jaws provided in form of cylinder sectors, where each expanding jaw has two-stage profile for commonly forming two cylindrical external surfaces |
| 09/01/2010 | CN201565528U Punch head used for secondary chambering |
| 09/01/2010 | CN201565527U Cigarette filter rod transmitting pipe connector flaring device |
| 09/01/2010 | CN201565525U Mouth flaring mould core |
| 09/01/2010 | CN1918031B Chassis |
| 08/25/2010 | CN201558916U Pipe reduction machine |
| 08/18/2010 | CN101804543A Process for coating stainless steel pipe on outer surface of steel pipe |
| 08/18/2010 | CN101444812B Processing method of thin-wall copper tube end cold forming seal |