| Patents for B21D 41 - Application of procedures in order to alter the diameter of tube ends (2,982) |
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| 08/29/2012 | CN202398730U Automatic tube drawing chuck device for mouth reducing machine |
| 08/29/2012 | CN102649147A Three-jaw necking machine synchronizing by rack |
| 08/29/2012 | CN102649146A Three-claw opening-shrinking machine synchronized through connecting rods |
| 08/23/2012 | WO2012111307A1 Method for correcting pipe end of seamless pipe formed from high-cr stainless steel |
| 08/22/2012 | CN101745585B Pre-flaring equipment and flaring device of tubular workpiece |
| 08/21/2012 | US8245559 Radial compression mechanism with optimum die-to-die gap |
| 08/16/2012 | WO2012107031A1 Device for crimping pipe ends |
| 08/16/2012 | WO2012107030A1 Holding device for a flanging tool and flanging tool for flanging pipe ends |
| 08/15/2012 | CN202377414U Locating and closing-in clamp |
| 08/15/2012 | CN202377413U Aluminium flat pipe necking device |
| 08/15/2012 | CN101954418B Method for manufacturing thin-wall cylindrical member necking die |
| 08/15/2012 | CN101862781B Mechanical pipe fitting end forming machine |
| 08/14/2012 | US8240185 Method for manufacturing cover of electronic device and cover obtained thereby |
| 08/08/2012 | CN202367407U Pipe penetration device for fin heat exchanger |
| 08/08/2012 | CN202367104U Vertical quick mould unloading mechanism of pipe expander |
| 08/08/2012 | CN202367091U Hot spinning necking-in machine for steel cylinders |
| 08/08/2012 | CN202367090U Steering drag link pipe reducing machine |
| 08/08/2012 | CN202367089U Turnup forming device for intake bucket |
| 08/08/2012 | CN202367088U Reaming tooling for heat radiating tube |
| 08/08/2012 | CN202367087U Bending and chambering machine for air braking pipeline of track car |
| 08/01/2012 | CN202356530U Steel pipe heading machine |
| 08/01/2012 | CN102615506A Piping machine |
| 08/01/2012 | CN102615207A Punching and flaring device for bending metal tube |
| 07/31/2012 | US8230714 Die carrier assembly and crimping process |
| 07/25/2012 | CN202343784U Closing device of valve rotating mechanism |
| 07/25/2012 | CN202343783U Necking plier for metal downspout |
| 07/25/2012 | CN102601262A Shock absorber oil storage tank machining method, shock absorber oil storage tank machining device and shock absorber oil storage tank |
| 07/25/2012 | CN102601199A Precise-spin reducing device for fixed core type thin wall pipe |
| 07/25/2012 | CN101927301B Cold compression necking process of reducing short tube |
| 07/18/2012 | EP2476494A1 Pressurised metal container preform and a method of making same |
| 07/18/2012 | EP2475922A1 Screwed pipe joint and method for the production thereof |
| 07/18/2012 | CN102596441A Apparatus and method for forming an antipollution device housing |
| 07/18/2012 | CN102581155A Pipe contraction device |
| 07/18/2012 | CN102581154A Reducing rolling rounding device for stainless steel pipe ports |
| 07/18/2012 | CN102581153A Processing method of closed-up pull rod |
| 07/18/2012 | CN102581152A Flaring forming hydraulic forging press for magnesium alloy wheels |
| 07/18/2012 | CN101362177B Forming technique of hose elbow core |
| 07/17/2012 | US8220307 Radial compression mechanism with optimum die-to-die gap |
| 07/17/2012 | US8220306 Die element |
| 07/11/2012 | CN202316820U 波纹管收口工装 Bellows shut tooling |
| 07/11/2012 | CN202316819U 手动旋压扩口机 Manual spinning Belling Machine |
| 07/11/2012 | CN202316818U 波纹管扩口工装装置 Bellows flaring tooling equipment |
| 07/11/2012 | CN202316817U 管道扩口器 Pipeline expansion mouthparts |
| 07/11/2012 | CN102554056A Steel pipe throat processing method |
| 07/10/2012 | US8215149 Stent crimping system and method |
| 07/05/2012 | US20120169045 Screwed pipe joint and method for the production thereof |
| 07/04/2012 | CN202291095U 钢管端头扩径机外模块复位机构 Steel tip flaring machine outside the module reset mechanism |
| 07/04/2012 | CN202291053U 高压油管端部成型模具 Pressure tubing ends mold |
| 07/04/2012 | CN102534156A Heat treatment method for improving comprehensive mechanical performance of heat expansion pipe |
| 07/04/2012 | CN102528408A Seal method for heat pipe |
| 07/04/2012 | CN102527875A Processing method of whole automobile axle housing with shaft head |
| 07/04/2012 | CN102527862A Flaring machine |
| 07/03/2012 | US8210020 Hot stretch forming die having distortion-minimizing characteristics |
| 06/27/2012 | EP2467220A2 Device for expanding hollow bodies |
| 06/27/2012 | CN102513466A Full-automatic copper tube feeding machine |
| 06/27/2012 | CN102513460A Steel pipe end sizing mill assembly with diameter expanding function |
| 06/27/2012 | CN102513459A Dimension correcting die for openings of large-aperture U-shaped tubes |
| 06/20/2012 | CN202278111U 汽车悬挂c形梁套管缩口装置 C-beams automotive suspension bushings necking device |
| 06/20/2012 | CN202278058U Rotary packaging device for multi-product shock absorbers |
| 06/20/2012 | CN102506142A Driving device for pipe reducing device |
| 06/20/2012 | CN102500712A Directional straight pull rod pipe reducing machine |
| 06/20/2012 | CN102500711A Shell nosing process for oil reservoir of shock absorber and equipment used thereby |
| 06/20/2012 | CN102500710A Automatic tee shaping equipment and shaping method thereof |
| 06/20/2012 | CN102500709A Method and system for simultaneously processing forming of two ends of tubular workpiece |
| 06/20/2012 | CN102500639A Rectangular tube production process method for reducing square tube sharpening times |
| 06/20/2012 | CN101716616B Method for producing seamless steel tube by combination of drawing and expanding and device thereof |
| 06/20/2012 | CN101410199B Apparatus for pipe end sizing and method for pipe end sizing |
| 06/14/2012 | WO2012076111A2 Process for forming a pipe portion |
| 06/14/2012 | DE102011086125A1 Lenkrohr mit angepasster Dicke Steering tube with adjusted thickness |
| 06/13/2012 | CN202270874U 一种管件端头封口机 Kind of pipe fitting end sealing machine |
| 06/13/2012 | CN202270873U 一种夹套缩口机尾架传动机构 One kind of jacket necking machine tailstock drive mechanism |
| 06/13/2012 | CN202270872U 散热器芯体扩孔机 Radiator core reaming machine |
| 06/13/2012 | CN202270871U 自卸式扩口辅具 Tipper flaring aids |
| 06/13/2012 | CN102489617A Metal tube seal process |
| 06/07/2012 | WO2012075095A2 Pipe element having shoulder, groove and bead and methods and apparatus for manufacture thereof |
| 06/07/2012 | WO2012073786A1 Hollow coil spring and method for manufacturing same |
| 06/07/2012 | US20120139236 Pipe Element Having Shoulder, Groove and Bead and Methods and Apparatus for Manufacture Thereof |
| 06/07/2012 | US20120137746 Swaging machine |
| 06/07/2012 | US20120137500 Installation/processing systems and methods of using the same |
| 06/07/2012 | CA2818980A1 Pipe element having shoulder, groove and bead and methods and apparatus for manufacture thereof |
| 06/06/2012 | EP2459331A1 Apparatus and method for forming an antipollution device housing |
| 06/06/2012 | EP2170539B1 Method and device for producing a high-pressure-tight connection and associated valve cartridge for a solenoid valve |
| 06/06/2012 | CN202263854U 集箱缩口机 Headers necking machine |
| 06/06/2012 | CN202263853U 防磨套管成型机 Wear sleeve forming machine |
| 05/31/2012 | US20120131975 Method and forming machine for manufacturing a product having various diameters |
| 05/30/2012 | EP1785204B1 Die, method of manufacturing stepped metal tube, and stepped metal tube |
| 05/30/2012 | CN202239366U Flaring device for dust-proof covers of shock absorbers |
| 05/30/2012 | CN202239323U Device for necking down tubes |
| 05/30/2012 | CN202239322U Semi-automatic pipe contracting device |
| 05/30/2012 | CN202239321U Special-shaped die of clamping dies |
| 05/30/2012 | CN102483186A Screwed pipe joint and method for the production thereof |
| 05/30/2012 | CN102476146A 一种高频封管装置 A high-frequency sealing tube device |
| 05/23/2012 | CN202228625U Driving device used for pipe contracting apparatus |
| 05/23/2012 | CN101797600B Method for manufacturing high-strength X100 steel grade spiral seam submerged arc welded pipe |
| 05/16/2012 | CN202219302U Rolling type pipe end forming machine |
| 05/16/2012 | CN202219301U An integrated molding apparatus for collecting pipe expansion openings |
| 05/10/2012 | DE102009024198B4 Verfahren zur Herstellung von Pressfittings und Werkzeug dafür Process for the preparation of press fittings and tools for |
| 05/09/2012 | CN202213197U Novel pipe orifice expander |
| 05/09/2012 | CN202212484U Head tapping device for steel pipe production |
| 05/09/2012 | CN202212483U Multi-station multi-connection necking-in machine |