| Patents for B21C 37 - Manufacture of metal sheets, rods, wire, tubes, profilesor like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape (9,784) |
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| 05/28/1997 | CN1150767A Method of producing seamless hot-finished tube |
| 05/28/1997 | CN1150645A Heat-transfer pipe with internal groove |
| 05/21/1997 | EP0774307A1 Sipe blade for a tire vulcanizing mold, and method of manufacturing the sipe blade |
| 05/21/1997 | CN2254382Y Tipping device for fin-tube unit |
| 05/15/1997 | DE19541598A1 Procedure for manufacture of tubular body, especially cans |
| 05/14/1997 | EP0773420A2 Folded, bent and re-expanded heat exchanger tube and assemblies |
| 05/13/1997 | US5628447 Method of manufacturing internally grooved tubes for heat exchangers |
| 05/13/1997 | US5628222 Method of manufacturing a rack |
| 05/07/1997 | EP0595877A4 Process of producing superconducting alloys |
| 05/07/1997 | EP0568627B1 Diameter reduction and angular insertion method for lining tubular members |
| 05/06/1997 | US5626012 Method of making a decorative chain for a necklace or the like from metals having differing characteristics and resulting chain |
| 05/06/1997 | US5625948 Method for producing a pipe and apparatus for the same |
| 04/30/1997 | CN1148523A Method for making internal channelled tube for heat-exchanging device |
| 04/24/1997 | DE19643137A1 Metal pipe for transmitting heat |
| 04/22/1997 | US5622211 Preperforated coiled tubing |
| 04/16/1997 | CN1147612A Finned tube and method of fabricating same |
| 04/16/1997 | CN1147430A Elbow-punching forming process |
| 04/10/1997 | WO1997012727A1 Method and apparatus for knurling a workpiece, method of molding an article with such workpiece, and such molded article |
| 04/08/1997 | US5618453 Combined cutting and welding method and relative apparatus for manufacturing structural sheet metal products |
| 04/03/1997 | WO1997011799A1 A pressing and a method of and apparatus for making a pressing |
| 04/03/1997 | DE19635734A1 Reinforced sections with suitably deformed layered fibrous outer shell |
| 04/02/1997 | EP0765701A1 Method for making flat tubes for heat exchangers, device and flat tube |
| 04/02/1997 | EP0765698A1 Method of producing metal constructional elements with differential wall thickness |
| 04/02/1997 | EP0756682A4 Method for making upset ends on metal pipe and resulting product |
| 04/02/1997 | CN1146789A Multiple cams |
| 04/02/1997 | CN1146389A Laser welding steel pipe and method |
| 03/27/1997 | DE19535498A1 Valve tappet axle with fluid bores |
| 03/27/1997 | CA2178513A1 Method of manufacturing flattened tubes for heat exchangers, apparatus and flattened tube |
| 03/26/1997 | EP0764481A1 Device for forming a collared calibrated hole in plastically deformable walls |
| 03/26/1997 | EP0764063A1 Method of producing a seamless hot-finished tube |
| 03/26/1997 | EP0651685B1 Combined cutting and welding method and relative apparatus for manufacturing structural sheet metal products |
| 03/25/1997 | US5613631 Method for producing a lengthwise welded metal tube |
| 03/19/1997 | EP0717667B1 Heat exchanger tubing production plant |
| 03/19/1997 | EP0461122B1 Distributed processing control system for automatic welding operation |
| 03/18/1997 | US5611874 Clad metal structures with ductility and tensile strength |
| 03/13/1997 | WO1997009135A1 Method and device for producing pressure-rolled pipes with thickened inner wall sections at the ends |
| 03/13/1997 | WO1997009134A1 Reinforced formed part, process for its production and its use |
| 03/13/1997 | DE19532954A1 Flow-turn device for manufacture of pressure-rolled parts |
| 03/13/1997 | DE19532953A1 Manufacturing procedure for pressure rolled pipes |
| 03/13/1997 | DE19532951A1 Verfahren und Vorrichtung zur Herstellung von drückgewalzten Rohren mit inneren Wandverdickungen an den Enden Method and apparatus for the production of spin formed tubes with inner wall thickening at the ends |
| 03/13/1997 | CA2228570A1 Method and device for producing press-rolled pipes with inner wall thickenings at the ends |
| 03/12/1997 | EP0762070A1 Refrigerant tubes for heat exchangers |
| 03/12/1997 | EP0746442A4 Dual bias weld for continuous coiled tubing |
| 03/11/1997 | US5609697 Water quenching, extrusion, cold rolling |
| 03/11/1997 | US5609055 Method and apparatus for cutting and notching a hollow pipe |
| 03/06/1997 | WO1997007906A1 Steel pipe manufacturing method and apparatus and steel pipe manufactured thereby |
| 03/05/1997 | EP0760265A1 Tube and its application in the manufacturing of components of vehicle axles and vehicle axle with such a tube |
| 03/04/1997 | US5607098 Tubular shape finishing apparatus for an electro-resistance-welded pipe |
| 03/04/1997 | US5606884 Method and apparatus for producing helically-wound lock-seam tubing with reduced lubrication |
| 02/26/1997 | EP0759120A1 Exhaust manifold for a multi-cylinder internal combustion engine |
| 02/26/1997 | EP0662018A4 Hollow bars and method of manufacture. |
| 02/25/1997 | US5604982 Method for mechanically expanding elliptical tubes |
| 02/19/1997 | CN2247566Y Stoving varnish iron plate special pipe forming mechanism |
| 02/18/1997 | US5603167 Oil removing apparatus and oil removing method for a pipe coil |
| 02/13/1997 | WO1997004895A1 Clad shape memory alloy composite structure and method |
| 02/13/1997 | CA2227590A1 Clad shape memory alloy composite structure and method |
| 02/11/1997 | US5601857 Extruder for extrusion manufacturing |
| 02/11/1997 | US5600988 Mill tooling changeover systems |
| 02/11/1997 | US5600983 Controlled time-overlapped hydroforming |
| 02/06/1997 | WO1997003771A1 Electric-resistance welded tube fin pass molding apparatus and double purpose roll apparatus utilizing the same |
| 02/05/1997 | EP0756682A1 Method for making upset ends on metal pipe and resulting product |
| 02/04/1997 | US5599264 Roller width adjusting device for a divided type molding roller |
| 01/29/1997 | EP0755562A1 Superconductor cable and method of making |
| 01/29/1997 | CN1141605A Roll forming machine |
| 01/23/1997 | WO1997002161A1 Air bag inflator and method of manufacture thereof |
| 01/23/1997 | WO1997002102A1 Method and apparatus for producing helically-wound lock-seam tubing with reduced lubrication |
| 01/23/1997 | DE19533827C1 Device for fixture of workpiece on outer periphery of closed, peripheral one-piece profile |
| 01/23/1997 | CA2196992A1 Air bag inflator and method of manufacture thereof |
| 01/22/1997 | EP0754112A1 Fabricating steel pipe with an integrally formed liner |
| 01/22/1997 | CN2245502Y S-piece coupling machine |
| 01/22/1997 | CN1140828A Refrigerant tubes for heat exchangers |
| 01/15/1997 | EP0753363A1 Method of producing hollow bodies |
| 01/15/1997 | CN1140116A Method for producing electric-resistance-welded steel pipe |
| 01/14/1997 | US5592844 Process and apparatus for rounding sheet-metal blanks |
| 01/09/1997 | WO1997001071A1 Flat tube for a heat exchanger |
| 01/08/1997 | EP0752289A2 Branch pipe forming tool and method of forming branch pipe on metal tube with the tool |
| 01/08/1997 | CN1139596A Multi wrapping metal tube and making method and equipment |
| 01/02/1997 | DE19523280A1 Forging machine for internal shaping of tubular workpieces |
| 01/01/1997 | CN1139026A Method for producing pipe and apparatus for the same |
| 12/27/1996 | EP0749787A1 Improved apparatus for forming and cutting spiral pipe |
| 12/24/1996 | US5586598 Heat exchanger |
| 12/24/1996 | US5586462 Device and method for forming bent pipe of non-annular cross-section |
| 12/18/1996 | EP0748875A1 Method for producing tubes by the U-O-E process |
| 12/17/1996 | US5584428 Plating nickel boride layer on facing surface of one pipe, inserting inner pipe into outer, cold working to reduce diameter, heat treating to join pipes by diffusion bonding |
| 12/12/1996 | DE19607010C1 End-formation system on tubular metal workpiece |
| 12/11/1996 | EP0746442A1 Dual bias weld for continuous coiled tubing |
| 12/11/1996 | EP0746429A1 Roll forming machine |
| 12/10/1996 | US5582052 Controlled time-overlapped hydroforming |
| 12/04/1996 | EP0745455A1 Apparatus for deburring the faces of rod-shaped workpieces such as profiled tubes or the like |
| 12/04/1996 | EP0745178A1 Multiple cams |
| 12/03/1996 | US5579837 Heat exchanger tube and method of making the same |
| 12/01/1996 | CA2177901A1 Tanks with flow drill bushings for receiving couplings |
| 11/21/1996 | DE19518252A1 Production of metallic hollow body using high internal pressure |
| 11/20/1996 | EP0743123A1 Process for interlocking a tubular shell of the fluid box of an heat exchanger |
| 11/20/1996 | EP0743111A1 Method for the manufacture of a lever for a feeding fence, a lever produced by the method and a feeding fence incorporating the lever |
| 11/20/1996 | EP0604439B1 Finned tube |
| 11/20/1996 | CN1136290A Dual bias weld for continuous coiled tubing |
| 11/19/1996 | USRE35378 Method of forming seamed metal tube |
| 11/19/1996 | US5575866 Hot rolled steel wire rod, fine steel wire and twisted steel wire |
| 11/14/1996 | DE19517386A1 Rolling solder and weld seams |