Patents
Sitemap › B21 - Mechanical metal-working without essentially removing material; Punching metal › B21D - Working or processing of sheet metal or metal tubes, rods or profiles without essentially removing material; Punching › B21D 41 - Application of procedures in order to alter the diameter of tube ends
Patents for B21D 41 - Application of procedures in order to alter the diameter of tube ends (2,982)
12/2012
12/04/2012CA2557126C Fitting particularly for high-pressure pipes
12/04/2012CA2534653C Vehicle frame having energy management system and method for making same
11/2012
11/28/2012CN202555710U Process pipeline sealing pliers
11/28/2012CN202555709U Pipe fitting flaring device
11/28/2012CN202555708U Mouth bulging mechanism for slice steel pipes
11/28/2012CN102284615B Forming device for pipe end forming die
11/27/2012US8316685 Roller holding unit
11/21/2012CN202539399U Workpiece clamping device for pipe end forming machine
11/21/2012CN202539398U Enamel ozonizer closing-in positioning device
11/21/2012CN202539397U Efficient pipe reducing machine
11/21/2012CN202539384U Flaring forming die for connecting pipe
11/21/2012CN102784849A Full-automatic pipe end forming machine
11/21/2012CN102133604B Pipe contracting device
11/15/2012WO2012152608A1 Peelback
11/14/2012CN202527602U Three-claw shrinkage machine synchronized through rack
11/14/2012CN202527601U Three-jaw necking machine synchronized through connecting rod
11/14/2012CN202527600U Necking cutter device for machining touch pen with metal tube
11/14/2012CN102773370A Radiating pipe expanding device of automobile heat radiator
11/14/2012CN102773355A Automatic pipe reduction machine for producing art suction pipe
11/08/2012DE102011100506A1 Verfahren und Vorrichtung zum Aufweiten von Zylinderrohrstücken Method and apparatus for expanding cylinder fittings
11/07/2012CN202516956U Rivet punching clamping device
11/07/2012CN202516952U Flaring device for end opening of metal pipe fitting
11/07/2012CN202516951U Machine for flaring and flattening copper pipe
11/06/2012US8302449 Closing method and closing machine
10/2012
10/31/2012CN202507059U Piping machine
10/31/2012CN202506764U Fully-automatic copper pipe feeding machine
10/31/2012CN202506756U Pipe necking die assembly
10/31/2012CN202506755U Hydraulic forging press for flaring-shaping of magnesium alloy wheel
10/31/2012CN202506739U Small bulge opening mould for tubular tool handle
10/31/2012CN102759899A Main control circuit of multi-station servo transposition cold punching machine
10/31/2012CN102756246A Composite precision forming method for fender bracket of automobile
10/31/2012CN102756048A Baffle device of multi-station servo changing cold punching machine
10/31/2012CN102756047A Main clamp die mechanism for multi-station servo transposing cold-punching machines
10/31/2012CN102756046A Closing tool for end socket of air cylinder
10/31/2012CN102756045A Multi-station servo transposing cold-punching machine
10/31/2012CN102756044A Multi-station die punching mechanism for multi-station servo transposing cold-punching machines
10/31/2012CN102756043A Servo transposition device of m multi-station servo changing cold punching machine
10/31/2012CN102756042A Main punching mechanism of multi-station servo changing cold punching machine
10/31/2012CN102205377B Device for punching and necking two ends of tube head
10/24/2012CN202498160U Riveting punch device
10/23/2012US8291737 Automatic extrusion device
10/18/2012WO2012141403A1 Intercooler and method for manufacturing same
10/18/2012DE102010004426B4 Vorrichtung zum Aufweiten von Hohlkörpern An apparatus for expanding hollow bodies
10/17/2012CN202490889U Fixed-core-model-type thin wall pipe precise rotary extrusion neck-reducing device
10/17/2012CN102728734A Online opening closing device for pipe end
10/17/2012CN102728733A Full-automatic pipe reducing machine
10/17/2012CN102728732A Pipe end forming machine
10/17/2012CN102728731A Mold clamping device of pneumatic quick cold punching machine
10/10/2012CN202479365U Large swelling opening die for tubular tool handle
10/10/2012CN202479301U Automatic heading machine
10/10/2012CN102722133A Main control circuit of pneumatic quick cold punching machine
10/10/2012CN102716998A Automatic production line for transmission shaft of automobile seat
10/10/2012CN102716997A Pipe shrinkage machine
10/10/2012CN102716996A Pipe end forming machine
10/10/2012CN102716995A Stamping die device of pneumatic quick cold stamping machine
10/10/2012CN102716994A Rapid pneumatic cold stamping machine
10/10/2012CN102716993A Stamping mechanism of rapid pneumatic cold stamping machine
10/09/2012US8281636 Heading device
10/05/2012CA2773722A1 Method and apparatus for pipe-end shaving
10/03/2012CN202461335U Contraction reducing device for tube end
10/03/2012CN202461334U Automatic necking device
10/03/2012CN202461333U Hole shrinkage roll-rounding device for port of stainless steel pipe
10/03/2012CN202461332U End withdrawing machine
10/03/2012CN102699220A Pinching method of tubing
10/03/2012CN102699219A Device and method for processing non-coaxial cylinder body necking
10/03/2012CN102699218A Necking device of gas cylinder
10/03/2012CN102699173A Double spinning wheel neck-spinning device
10/03/2012CN102699171A Mechanical pipe fitting end part forming machine
09/2012
09/27/2012WO2012129349A2 Flaring and expanding tools and methods of flaring and expanding tubes and pipes
09/27/2012WO2012127557A1 Metal pointing device and metal pointing method
09/27/2012US20120240652 Flaring and Expanding Tools and Methods of Flaring and Expanding Tubes and Pipes
09/26/2012CN202447548U Full-automatic pipe contracting machine
09/26/2012CN202447547U Double-end sealing machine for full-automatic metal pipe
09/26/2012CN202447546U Heating and necking device for two ends of thick-wall round tube
09/26/2012CN202447545U Diameter expanding type sizing mill for steel pipe end
09/26/2012CN102689150A Automatic production equipment for discharging, notching and necking of steel pipe
09/26/2012CN102688952A Full automatic heat pipe degassing and sealing device
09/26/2012CN102688951A Double-head heating necking method and necking device thereof for thick-wall round tubes
09/26/2012CN102688950A Integral forming process of steel cylinders
09/26/2012CN102688925A Spinning necking-in machine for high-pressure seamless large-caliber steel cylinder
09/26/2012CN102145366B Copper pipe binding machine
09/26/2012CN101294760B Heat exchanger with connector and method of manufacturing the connector
09/20/2012DE102010010603B4 Vorrichtung und Verfahren zur Herstellung konusförmiger Abschnitte an zylindrischen Rohren von Schraubfundamenten Apparatus and method for manufacturing conical portions on cylindrical tubes of screw foundations
09/19/2012CN102686330A Method for manufacturing hollow engine valve
09/19/2012CN102672064A Hydraulic driven flaring hand tool
09/12/2012CN202427849U Pipe flaring device
09/12/2012CN102658337A Pipe expanding and contracting machine
09/07/2012WO2012118499A1 Big crimpin crimper
09/07/2012WO2012076111A3 Method and device for forming a pipe portion
09/05/2012CN202411260U Pipe reduction device
09/05/2012CN202411259U Pipe end necking forming device for automatic refrigerator reservoir processing equipment
09/05/2012CN202411258U Flaring mechanism of pipe expander
09/05/2012CN202411257U Tube head press
09/05/2012CN202411235U Die of stamping flaring machine
09/04/2012US8256263 Apparatus and method for compressing a stent
08/2012
08/30/2012DE102012100705A1 Vorrichtung und Verfahren zum Aufweiten des Endes eines Kunststoffrohres Apparatus and method for expanding the end of a plastic tube
08/29/2012EP2492029A1 Constrained metal flanges and methods for making the same
08/29/2012CN202398739U Spinning roller for necking gas bottle in hot spinning manner
08/29/2012CN202398732U Automatic feeding device of mouth reducing machine
08/29/2012CN202398731U Necking device for bottom of steel seamless gas cylinder
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