| Patents for B21D 15 - Corrugating tubes (1,257) |
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| 12/07/2005 | CN1230264C Apparatus for embossing metal pipe |
| 12/01/2005 | US20050263296 Deformable member |
| 11/08/2005 | CA2193933C Process for producing flat heat exchange tubes |
| 10/26/2005 | CN1686632A Manufacturing method of plastic stainless steel water pipe joint thread |
| 10/12/2005 | CN1682057A Metal bellows tube, method of producing the same, and flexible tube for high-pressure fluid |
| 10/12/2005 | CN1222376C Equipment for making ring waveform metal pipe |
| 10/12/2005 | CN1222375C Method of forming cold diameter reducing roll for metal pipe and metal pipe formed by the method |
| 10/06/2005 | US20050217336 Method and apparatus for patterning of bore surfaces |
| 09/15/2005 | WO2005084857A1 Method and apparatus for patterning of bore surfaces |
| 08/17/2005 | CN1214874C Method for continuous manufacturing longitudinal seam welding wave-form metal pipe and equipment thereof |
| 08/10/2005 | CN2715878Y Machine for making metal spiral flat pipe for prestressed concrete |
| 08/10/2005 | CN1214066C Non-inflammable, translucent polycarbonate molding materials |
| 07/20/2005 | CN2710786Y Equipment for mfg. corrugated pipe and contraction and enlargement pipe |
| 06/21/2005 | US6908109 Steering gear shaft for a steering column of a motor vehicle |
| 06/14/2005 | US6906124 Fireproofing, chemical resistance, optics |
| 06/01/2005 | EP1536172A1 Metal bellows tube, method of producing the same, and flexible tube for high-pressure fluid |
| 06/01/2005 | EP1169150B1 Method for manufacturing a pipe with a not circular cross-section and device therefor |
| 05/24/2005 | US6896290 Steering gear shaft for a steering column of a motor vehicle |
| 05/24/2005 | US6896049 Deformable member |
| 05/18/2005 | CN2700017Y Roller extruding and radium crinkling former for thin wall type pipe |
| 05/04/2005 | CN2696739Y Inner rolling device for moulding bamboo joint shape of metal pipe |
| 04/12/2005 | CA2101659C Metal storage tank manufacturing process |
| 04/06/2005 | CN1195593C System and method for corrugating spiral formed pipe |
| 03/23/2005 | CN2686760Y Support for wrinkle working for metal corrugated pipe |
| 03/23/2005 | CN1193839C Superpastic forming process of titanium alloy corrugated pipe |
| 03/23/2005 | CN1193838C Tube bending device for refrigerant guide tube of refrigerator |
| 03/02/2005 | CN1586800A Producing method and forming device for thin wall stainless steel concave channel spiral pipe |
| 02/09/2005 | CN1576673A Bellows and producing device thereof |
| 01/27/2005 | DE102004022665A1 Machine press tool for compressing tubular workpieces for manufacture of part of vehicle steering system has two V-shaped blocks moving together to compress four tool blocks onto workpiece |
| 01/26/2005 | CN1570443A Plastic profiled screw-thread interface thin-walled stainless steel pipes and sealing method of same |
| 01/26/2005 | CN1569355A Inner roll forming method and apparatus for knotted metal pipe |
| 01/18/2005 | US6843273 Gilled pipe |
| 01/12/2005 | CN1562516A Roll extruding forming machine for reducing diameter of profiled tube in thin wall |
| 12/01/2004 | CN2659577Y Bellows rolling mill |
| 11/23/2004 | US6820317 Annealing step is carried out during the bulge forming process; introducing pressurized fluid into the tube blank to form multiple bulges |
| 11/17/2004 | CN1546252A Method for processing corrugations on external surfaces of cylinders |
| 11/02/2004 | US6811051 Metal container capable of retaining a state of being reduced in a longitudinal direction and reduction method thereof |
| 10/06/2004 | CN1535190A Container beading |
| 09/16/2004 | US20040178627 Double pipe and method of manufacturing the double pipe |
| 09/14/2004 | US6789318 Method for producing longitudinally welded helically corrugated metal tubing |
| 09/08/2004 | CN2638878Y Steel pipe channelling machine |
| 09/08/2004 | CN2638877Y 滚槽机 Roller slot machines |
| 09/02/2004 | US20040168497 Container beading |
| 08/25/2004 | CN1163323C Production process and special apparatus of double-faced corrugated metal pipe |
| 08/18/2004 | EP1447606A1 Double pipe and method of manufacturing the double pipe |
| 08/18/2004 | CN2633463Y Steel pipe drum making machine |
| 08/11/2004 | CN1520341A Tube corrugating appts. and method |
| 08/04/2004 | EP1442805A1 Apparatus for, and method of, manufacturing metallic bellows |
| 08/04/2004 | CN2629868Y Metal pipe corrugated ring shaping tool |
| 07/13/2004 | CA2307488C Corrugated thick-walled pipe for use in wellbores |
| 07/07/2004 | CN2623372Y Bursted device of thin-walled metal pipes |
| 06/24/2004 | DE202004006708U1 Machine for making grooves in headrest tubes for motor vehicle seats has punch with alignment and working faces to engage surface of tube |
| 06/09/2004 | CN1502428A Process for producing flat heat exchange tubes |
| 06/09/2004 | CN1153041C Process for producing flat heat excahnger tubes |
| 05/26/2004 | EP1276571B1 Gilled pipe |
| 05/19/2004 | EP1232027B1 System and method for corrugating spiral formed pipe |
| 05/12/2004 | CN2614809Y Convex collar forming tool for metal pipe |
| 04/21/2004 | EP1409175A1 Container beading |
| 04/07/2004 | EP1207972A4 Hydraulic positioning assembly for cold rolling tubes |
| 04/07/2004 | EP1206328B1 Hydroformed collapsible drive shaft and steering shaft and methods of making the same |
| 03/23/2004 | US6708545 Roll grooving apparatus |
| 03/18/2004 | WO2004023017A1 Metal bellows tube, method of producing the same, and flexible tube for high-pressure fluid |
| 03/18/2004 | US20040050133 Method of forming cold diametrally reducing roll for metal pipe and metal pipe formed by the method |
| 02/10/2004 | US6688150 Roll grooving apparatus |
| 02/04/2004 | EP1385646A1 Tube corrugating apparatus and method |
| 01/07/2004 | CN2597124Y Shaper for flange of pipe end |
| 01/07/2004 | CN1466496A Method of forming cold diametrally reducing roll for metal pipe and metal pipe formed by the method |
| 01/07/2004 | CN1133856C Capillary pipe for refrigerator/air co ditioner and making method thereof |
| 11/27/2003 | US20030217844 Deformable member |
| 11/19/2003 | CN1128331C Heat exchanging tube for absorber and method of manufacturing same |
| 11/05/2003 | CN1453493A Stainless steel pipe rolling connection method and rolling unit |
| 10/22/2003 | CN2581096Y Wheel-pushing type spiral tube shaper |
| 09/18/2003 | US20030173765 Steering gear shaft for a steering column of a motor vehicle |
| 09/18/2003 | US20030173764 Steering gear shaft for a steering column of a motor vehicle |
| 09/17/2003 | EP1344708A2 Steering shaft of a steering column for a motor vehicle |
| 09/17/2003 | EP1344707A2 Steering shaft of a steering column for a motor vehicle |
| 09/17/2003 | CN2573108Y Floating roll-in transversely corrugating machine |
| 09/16/2003 | US6619698 Hose fitting and die for preparation |
| 09/16/2003 | US6619089 Tube corrugating apparatus and method |
| 08/27/2003 | CN2568328Y Metal tube surface groove rolling machine |
| 08/21/2003 | US20030158304 Containing an organic phosphonate, phosphinate, phosphine oxide, phosphate or oligophosphate and a fluorinated polyolefin |
| 08/20/2003 | EP1336438A1 Method of forming cold diametrally reducing roll for metal pipe and metal pipe formed by the method |
| 07/31/2003 | US20030141310 Metal container capable of retaining a state of being reduced in a longitudinal direction and reduction method thereof |
| 07/16/2003 | CN1430643A Non-inflammable, translucent polycarbonate molding materials |
| 07/10/2003 | US20030126732 Method of making a metallic bellows |
| 07/09/2003 | EP1325784A1 Method of making a metallic bellows |
| 07/09/2003 | EP0882939B1 Heating tube for absorber and method of manufacturing same |
| 07/01/2003 | US6584821 Self-aligning non-pinching hydroforming dies |
| 06/25/2003 | CN1426331A Gilled pipe |
| 06/12/2003 | US20030106599 Gilled pipe |
| 05/21/2003 | CN2551369Y Corrugated tube rolling machine |
| 05/20/2003 | US6564606 Manufacturing method and manufacturing apparatus for metallic bellows |
| 04/22/2003 | US6550300 Apparatus for producing annularly corrugated metal tubes |
| 04/09/2003 | EP1299616A1 Deformable member |
| 04/09/2003 | CN1409658A System and method for corrugating spiral formed pipe |
| 04/09/2003 | CN1408487A Method for producing longitudinal seam welding spiral wave metal tube |
| 04/08/2003 | US6543266 Hydroformed collapsible driveshaft and steering shaft and methods of making the same |
| 04/02/2003 | EP1297063A1 Non-inflammable, translucent polycarbonate molding materials |
| 03/27/2003 | US20030056559 Method for producing longitudinally welded helically corrugated metal tubing |
| 03/26/2003 | EP1295652A2 Method of manufacturing longitudinally welded and helically corrugated pipes |