| 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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| 09/01/1993 | EP0558093A2 Method of producing superconducting wire |
| 08/31/1993 | US5239888 Steering-column body tube for a motor vehicle |
| 08/11/1993 | EP0555062A1 Clad wire rod |
| 08/11/1993 | EP0459988B1 Method for manufacturing of square pipes from coated steel strips |
| 08/10/1993 | US5233791 Apparatus for grinding the internal surface of pipe |
| 08/03/1993 | US5231859 Fluting machine |
| 07/29/1993 | DE4201859A1 Flexible corrugated tube - consists of thin steel band with smooth inner lining, leading edge of which is locked between waveforms of adjacent band windings |
| 07/29/1993 | DE4201746A1 Method of formation of grooves on extruded bars or tubes - by passing the tube or bar between toothed wheels whilst the material is soft |
| 07/27/1993 | US5230748 Superconductor and process of manufacture |
| 07/22/1993 | WO1993013887A2 Method and apparatus for forming spiral grooves internally in metal tubing |
| 07/20/1993 | US5228479 Multi-layered flexible piping and method and machine for forming same |
| 07/14/1993 | CN1074162A Method of manufacturing a multiple-walled tube |
| 07/08/1993 | WO1993012900A1 Tube finning apparatus and method |
| 07/06/1993 | CA1319859C Sizing tool for a machine for the longitudinal seam welding of rounded can bodies |
| 06/29/1993 | US5223349 Copper clad aluminum composite wire |
| 06/29/1993 | US5223206 Method for producing heat treated composite nuclear fuel containers |
| 06/29/1993 | US5222299 Enhanced heat transfer surface and apparatus and method of manufacture |
| 06/29/1993 | US5222288 Method for forming a spiral-wound flexible piping |
| 06/29/1993 | CA1319565C Production of brazeable pipes |
| 06/24/1993 | DE4141867A1 Method for mfr. of hollow profile out of metal strip - utilises strip bent back on itself to form joint edges for high-frequency welding |
| 06/23/1993 | EP0547739A1 Method of forming an insulating tube |
| 06/17/1993 | DE4140930A1 Welded tube cooling - has jet with longitudinal slit at upper guide rollers directed at longitudinal seam in the tube |
| 06/16/1993 | EP0546969A1 Cylindrical enclosure of large diameter for cooling components |
| 06/16/1993 | EP0546790A1 Method of manufacturing a multiple-walled tube |
| 06/16/1993 | EP0546334A1 Method and device for manufacturing of heat-exchanger elements, and corresponding heat-exchanger element |
| 06/16/1993 | CN1073129A Method and apparatus to manufacture heat exchanger and finished heat exchanger |
| 06/15/1993 | US5219374 Inner ribbed tube and method |
| 06/10/1993 | WO1993011401A1 Perforated plates for cryogenic regenerators and method of fabrication |
| 06/08/1993 | US5216792 Method of and device for obtaining short shavings trimmed from the seams inside longitudinally welded pipes |
| 06/01/1993 | US5215245 Method for roll embossing metal strip |
| 05/25/1993 | CA1318187C Roll forming process and apparatus for making ribs in strip material |
| 05/19/1993 | EP0542649A1 Process for cutting a flexible tube of helically coiled metal strip with interlocking seams |
| 05/18/1993 | CA1317747C Method and apparatus for body panel attachment |
| 05/13/1993 | WO1993009889A1 Method and apparatus for production of continuous metal strip |
| 05/13/1993 | DE4137047A1 Tube made from flat metal strip - has strip first corrugated then wrapped around form tool and seam welded |
| 05/12/1993 | EP0461122A4 Distributed processing control system for automatic welding operation |
| 05/05/1993 | CN2131623Y Automatic pressure stabulator for extruding roll in welding |
| 05/04/1993 | US5207848 Wrapping tube, insertion, radial expansion, consolidation |
| 04/27/1993 | CA1316908C High performance heat transfer tube for heat exchanger |
| 04/27/1993 | CA1316907C Heat exchanger and method of manufacturing the same |
| 04/20/1993 | US5203197 Clamp assembly |
| 04/13/1993 | US5201457 Corrosion resistance |
| 04/01/1993 | WO1993005903A1 Tube and method of forming same |
| 03/24/1993 | EP0532598A1 Method of manufacturing tubes. |
| 03/23/1993 | US5195675 Method for producing a composite pipe |
| 03/17/1993 | EP0531616A1 Capillary tube made of special alloy and method for producing the same |
| 03/16/1993 | US5193374 Apparatus for cutting spiral pipe |
| 03/16/1993 | CA1314538C Aluminum heat exchanger |
| 03/10/1993 | EP0530197A1 Firearm insert for firing smaller caliber ammunition and process for producing a insertable barrel |
| 03/09/1993 | US5192850 Circuit for a DC arc-welding system for continuous longitudinal-seam welding |
| 03/09/1993 | US5192013 Scarfing apparatus |
| 03/09/1993 | US5191911 Continuous length of coilable tubing |
| 03/04/1993 | WO1993004331A1 Heat exchanging element and method for the manufacture thereof |
| 03/04/1993 | CA2115754A1 Heat exchanging element and method for the manufacture thereof |
| 03/03/1993 | EP0530029A2 Method and apparatus for installing electrical logging cable inside coiled tubing |
| 03/02/1993 | US5190267 Hand railing and method of manufacture |
| 03/02/1993 | US5190100 Condenser for use in a car cooling system |
| 03/02/1993 | CA1314016C Method and apparatus for manufacturing small diameter, thick walled, cable sheaths |
| 02/23/1993 | US5189720 Method for manufacturing steel wire material for reinforcing optical fiber |
| 02/18/1993 | WO1993002829A1 Finned tube |
| 02/18/1993 | DE4127178A1 Susceptors prepn., esp. of tantalum, for induction heated furnaces - by rolling sheet metal with rolling lining increasing to centre, then decreasing to other edge, etc. |
| 02/17/1993 | EP0527268A1 Method for producing a composite pipe |
| 02/17/1993 | CN2127045Y Two-layer soldering pipe forming device |
| 02/16/1993 | US5185925 Method of manufacturing a tube for a heat exchanger |
| 02/10/1993 | EP0526614A1 Process and device for making double-walled tubes by the so-called bundy method |
| 02/09/1993 | US5184674 Inner ribbed tube and method |
| 02/04/1993 | WO1993002222A1 Process of producing superconducting alloys |
| 02/03/1993 | EP0525827A1 Method of producing superconducting wire |
| 02/03/1993 | CN1068637A Three-layer coil welding tube and its shape forming method and device |
| 02/02/1993 | CA1313300C Apparatus for making helically wound interlocked flexible pipe |
| 01/28/1993 | DE4124689A1 Removing form errors and relieving adverse internal stresses in longitudinal seam welded pipes - by continuous expansion with internal expander plug and plug mandrel |
| 01/28/1993 | DE4124618A1 Mfr. of welded hollow profiles - using cylindrical rollers with different dia. and chain drawing machine to move tubes |
| 01/22/1993 | EP0530197A4 Firearm insert for firing smaller caliber ammunition and process for producing a insertable barrel. |
| 01/20/1993 | EP0523215A1 Process for the hydrostatic shaping of hollow bodies of cold-workable metal and device for implementing it. |
| 01/19/1993 | US5180204 High strength steel pipe for reinforcing door of car |
| 01/19/1993 | US5180095 Machinery for welding helical-seam pipe from metal strip |
| 01/13/1993 | EP0522985A1 Heat transfer tubes and method for manufacturing |
| 01/13/1993 | EP0522723A2 Method of manufacturing 2-or 3-layered metallic tubing |
| 01/13/1993 | EP0522282A1 Joint for hollow articles and method for their manufacture |
| 01/13/1993 | CN1067835A Technology for forming multiple-thread steel by cold drawing |
| 01/13/1993 | CA2072465A1 Method of manufacturing bi-metallic tubing |
| 12/30/1992 | CN2126120U Three-way pipe coupling axial extruding shaping device |
| 12/29/1992 | US5174831 Forming intermetallic layer of transitional metal and a nontransitional metal by heating to react all the first metal with second metal; multilayer of pure transitional metal and intermetallic |
| 12/29/1992 | US5174830 Superconductor and process for manufacture |
| 12/23/1992 | EP0518958A1 Method and apparatus for forming one piece duct sections |
| 12/23/1992 | CN1019554B Apparatus for roll forming metal articles |
| 12/22/1992 | US5172476 Method of manufacturing heat exchanger tubing |
| 12/17/1992 | DE4119159A1 Longitudinal seam welding tubing prodn. - using protective oil or fat film with flame point well below welding temp. to ensure its complete removal before welding |
| 12/15/1992 | US5170557 For an internal combustion engine |
| 12/09/1992 | CN1066805A Multifuncition straight seam welding tube forming technology and forming machine |
| 12/02/1992 | EP0515802A1 Apparatus for making helically seamed tubes from metal strip |
| 12/02/1992 | CN2123385U Steel band illiptical fin tube sheet winding machine tool |
| 12/01/1992 | CA1310812C Method for manufacturing a pipe with projections |
| 11/30/1992 | CA2067640A1 Pipe screw seaming arrangement for producing welded screw-seamed pipes from metal strip |
| 11/24/1992 | CA1310567C Pipe stretching apparatus |
| 11/24/1992 | CA1310479C Process for the fabrication of composite tubing for the transportation of nuclear fuels, and products obtained therewith |
| 11/19/1992 | EP0514329A2 Improved rubber-metal bushing and method of producing same |
| 11/19/1992 | EP0513654A1 Process for producing high strength alloy wire |
| 11/17/1992 | US5163602 Multi-walled steel pipe, a method of making the same and a metal strip for use in making the same |
| 11/17/1992 | CA2068823A1 Rubber-metal bushing and method of producing same |