| 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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| 04/04/1984 | EP0104844A2 Apparatus for manufacturing flexible corrugated tubes |
| 04/04/1984 | EP0104842A2 Improved strip of flexible corrugated material |
| 04/04/1984 | EP0104789A1 Methods of prestressing tubular apparatus |
| 04/03/1984 | US4440215 Heat pipe |
| 04/03/1984 | CA1164638A1 Method for producing a tube for a cracking plant |
| 03/28/1984 | EP0104055A2 Method & apparatus for producing stepped tubes |
| 03/27/1984 | US4438643 Machine for forming tubes from a strip |
| 03/21/1984 | EP0103439A1 Methods of prestressing and methods of manufacturing tubular apparatus |
| 03/14/1984 | EP0102407A1 Finned tube with internal projections and method and apparatus for its manufacture |
| 03/13/1984 | US4436239 Method and apparatus for manufacturing spiral pipe |
| 03/13/1984 | US4435972 Process for forming integral spindle-axle tubes |
| 03/13/1984 | US4435968 Apparatus for corrugating pipes |
| 03/13/1984 | US4435886 Pipe-welding mill for production of coiled pipes |
| 03/06/1984 | US4434809 For connecting a branch pipe to a feed pipe |
| 03/06/1984 | US4434638 Method and apparatus for severing corrugated metal products |
| 03/06/1984 | CA1163213A1 Manufacture of electrically welded steel pipe |
| 02/22/1984 | EP0101312A1 Weld neck flange for a valve or the like and method of manufacture |
| 02/07/1984 | US4429654 Helical seam structural vessel, method and apparatus of forming same |
| 02/07/1984 | US4429561 Mandrel for cold forging internally profiled tubes or cylinders |
| 02/07/1984 | US4429558 Method of and apparatus for fabrication of spiral fin |
| 02/07/1984 | CA1161835A1 Finned tube for a heat exchanger |
| 02/02/1984 | WO1984000387A1 Double l-shaped electrode for brine electrolysis cell |
| 01/31/1984 | US4428420 Heat absorbing element and method of manufacture |
| 01/31/1984 | US4428222 Cold forging mandrel with threads |
| 01/31/1984 | US4428220 Method and tool for the cold forging of internally profiled tubes |
| 01/31/1984 | US4428218 Method of manufacture and assembly of extruded aluminum salt for roller shutter |
| 01/31/1984 | US4428214 For forming a hole and a brushing in a metal workpiece |
| 01/31/1984 | US4428107 Process for filling with a hardenable filler gaps where corrosive attack can occur in tube and fin heat exchangers |
| 01/24/1984 | US4426868 Apparatus and method for forming fins on a tube surface |
| 01/18/1984 | EP0098658A1 Method for the production of metallic wire, wire obtained by this method and device for carrying out this method |
| 01/17/1984 | US4425942 Finned tube for a heat exchanger |
| 01/17/1984 | US4425696 Method of manufacturing a high performance heat transfer tube |
| 01/10/1984 | US4424618 Assembly of straight duct and transitions |
| 12/21/1983 | EP0096087A1 Method and hollow profile for connecting with other profiles by expanding, edge-curling or the like |
| 12/13/1983 | US4419802 Method of forming a heat exchanger tube |
| 12/13/1983 | CA1158535A1 Method for making helically wound surface-coating tubes, and apparatus for carrying out this method |
| 12/13/1983 | CA1158462A1 Manufacture of split tubes |
| 12/08/1983 | WO1983004196A1 Helically-formed pipe winding machine |
| 12/06/1983 | US4418560 Shell layer wrapping machine and method of positioning vessel sections of a multi-layer vessel |
| 11/30/1983 | EP0095413A2 Prestressing ducts and methods for their manufacture |
| 11/29/1983 | CA1157690A1 Edge preforming of metal plate |
| 11/29/1983 | CA1157682A1 Bourdon tube construction |
| 11/22/1983 | US4417117 Transporting can bodies for a fully automated resistance welding machine |
| 11/22/1983 | US4416131 Process and apparatus for monitoring length and diameter of helical corrugated pipe |
| 11/16/1983 | EP0094328A1 Process for manufacturing aluminium alloy products with adequate drawing properties |
| 11/15/1983 | US4414835 Flange forming drill apparatus |
| 11/08/1983 | US4414428 Expanded metal containing wires and filaments |
| 11/08/1983 | US4413768 Method of making a multi-bore element |
| 11/08/1983 | US4413657 Exhaust pipe with vibration damping |
| 11/08/1983 | US4413525 Bourdon tube construction |
| 11/08/1983 | US4413485 Flange forming drill means |
| 11/01/1983 | US4412882 Method for producing composite pipes |
| 11/01/1983 | US4412560 Tube for a cracking plant |
| 11/01/1983 | US4412441 Method for forming an enlarged flanged hole in a curved surface |
| 10/18/1983 | US4410369 Manufacture of electrically welded steel pipe |
| 10/18/1983 | US4410013 Composite dual tubing |
| 10/13/1983 | WO1983003374A1 Method for the manufacture of a conical tubular member, and a member manufactured according to the method |
| 10/04/1983 | US4407064 Apparatus for pulling transverse fins onto a plurality of pipes |
| 09/13/1983 | US4403491 Apparatus for forming a split tube |
| 09/13/1983 | US4403385 Process of preparing a double wall heat exchanger |
| 09/13/1983 | CA1153632A1 Multilayer tubing and method of and apparatus for making same |
| 09/06/1983 | US4402240 Heat exchanger ribbon slitting device and method |
| 09/06/1983 | US4402121 Method of manufacturing heat absorbing elements |
| 08/30/1983 | US4400966 Tool for forming a lateral opening in a tube |
| 08/30/1983 | US4400959 Extruder for the formation of a branch on a pipe |
| 08/23/1983 | CA1152296A1 Tube for a cracking plant |
| 08/17/1983 | EP0085888A2 Method of making in a metal piece a thoroughfare hole having edge-reinforcements on both ends, and also tool for carrying out the method |
| 08/09/1983 | CA1151586A1 Continuous galvanizing and drawing process |
| 08/04/1983 | WO1983002576A1 Device for sizing tubes |
| 08/03/1983 | EP0084799A1 Process for producing walking bar members for continuous casting |
| 07/26/1983 | CA1150723A1 Heat transfer surface and method of manufacture |
| 07/26/1983 | CA1150611A1 Process for cold-forming a tube having a thick-walled end portion |
| 07/19/1983 | US4393566 Processing of copper tubing |
| 07/12/1983 | US4392372 Method and apparatus for flanging tube ends |
| 07/05/1983 | CA1149139A1 Apparatus and process for manufacturing finned tubes |
| 06/28/1983 | US4390382 Tone arm manufacturing method |
| 06/28/1983 | US4389866 Apparatus for forming an enlarged flanged hole in a curved surface |
| 06/28/1983 | CA1148796A1 Method and apparatus for expanding spiralweld pipe |
| 06/22/1983 | EP0081979A1 Improvements in or relating to the production of tubular members |
| 06/21/1983 | CA1148413A1 Machine and method for forming tubes from a strip |
| 06/14/1983 | US4387498 Method for making helically wound surface-coated tubes, and apparatus for carrying out this method |
| 06/07/1983 | US4386513 Method of production of metal wires |
| 06/01/1983 | EP0080437A1 Bimetallic composite coin blank for coins, medals and the like |
| 06/01/1983 | EP0080331A2 Winding machine |
| 05/24/1983 | CA1146913A2 Method and apparatus for the cold forming of metal |
| 05/10/1983 | US4383163 Method of manufacturing a heat exchange tube with internal surface enlarging elements |
| 05/10/1983 | US4382373 Apparatus for calibrating tubular articles |
| 05/10/1983 | CA1146098A1 Corrugated pipe and method for the production thereof |
| 05/03/1983 | US4381592 Method of producing helically wound spine fin heat exchanger |
| 05/03/1983 | CA1145846A1 Internally vaned tube construction |
| 04/27/1983 | EP0077700A1 Method for the local deforming of round tubes into tubes with flat sides, and die for doing the same |
| 04/26/1983 | CA1145273A1 Corcerning copper or copper-alloy tubes for pipes used in sanitary, condenser and other installations |
| 04/19/1983 | US4380368 Projection screen |
| 04/19/1983 | CA1144736A1 Method of making helical metallic ribbon for continuous edge winding applications |
| 04/12/1983 | US4379397 Apparatus having shaping jaws for manufacturing bodies of spindle-type shapes |
| 04/12/1983 | CA1144490A1 Composite metal tubing |
| 04/05/1983 | US4379216 Method and apparatus for solder bonding multilayer tubing |
| 03/23/1983 | EP0074482A2 Method of making multi-wall tubes with helically arranged seams |
| 03/16/1983 | EP0074085A2 Weld detector |
| 02/15/1983 | US4373366 Machine for forming spiral grooves in metal pipe inner surface |