| 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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| 01/16/1995 | CA2128166A1 Process for producing corrugated tube and product produced thereby |
| 01/11/1995 | EP0633132A1 Sandwich panel with reinforced connecting holes and method for making it |
| 01/11/1995 | EP0633075A1 Method and apparatus for forming hollow metallic profiles supported by internal pressure |
| 01/10/1995 | US5379832 Shell and coil heat exchanger |
| 01/10/1995 | US5379620 Apparatus and method for forming precision surfaces on shaft-like components |
| 01/05/1995 | WO1995000296A1 A machine for forming a metal strip into a tubular form having a stop-restart displacement mechanism |
| 01/05/1995 | WO1995000286A1 Method of forming seamed metal tube |
| 01/05/1995 | WO1995000255A1 Continuous tube forming and coating |
| 01/05/1995 | CA2165809A1 Continuous tube forming and coating |
| 01/04/1995 | CN2186610Y 焊管机 Pipe machine |
| 12/28/1994 | EP0630308A1 A device for cladding tubes by means of an explosive process. |
| 12/28/1994 | EP0630298A1 Combined cutting and welding process for manufacturing structural products, apparatus implementing such a process, and products manufactured thereby |
| 12/22/1994 | WO1994025217A3 Method of producing a surface with alternating ridges and depressions and a tool for carrying out the said method |
| 12/22/1994 | DE4421134A1 Method for the production of a gilled heat exchanger |
| 12/14/1994 | EP0627997A1 High strength automotive seat frame and method |
| 12/08/1994 | WO1994027755A1 Method and apparatus for sizing multiple tubes |
| 12/07/1994 | EP0627272A2 Multi-stage dual wall conduit hydroforming |
| 12/07/1994 | CN1026867C Multi-functional straight welding pipe forming process and forming set thereof |
| 12/01/1994 | DE4415039A1 Set of connecting fittings (joining fittings) for connecting a heater to lines of a central heating system, and method for producing such a set of connecting fittings |
| 12/01/1994 | DE4318931C1 Method for the production of welded tubes |
| 11/30/1994 | EP0626464A1 Dimensionally stable and corrosion-resistant fuel channels and related method of manufacture |
| 11/29/1994 | US5368218 Weld bead cutter mechanism |
| 11/29/1994 | US5367897 Apparatus for forming a pipe from a sheet metal plate |
| 11/29/1994 | CA2049087C Method for producing a composite pipe |
| 11/23/1994 | EP0625079A1 Process for manufacturing tubular parts |
| 11/23/1994 | CN1095317A Forging, moulding techenology for metal pipe |
| 11/23/1994 | CN1026679C Apparatus for drawing and/or guiding long material |
| 11/22/1994 | US5365763 Device for shaping of helical fins on the outer wall of a tube |
| 11/15/1994 | US5363544 Multi-stage dual wall hydroforming |
| 11/10/1994 | WO1994025217A2 Method of producing a surface with alternating ridges and depressions and a tool for carrying out the said method |
| 11/09/1994 | EP0623404A2 Pipe, pipe connector, method for their manufacture and device for holding pipes |
| 11/09/1994 | CN2182007Y Fin cold wrapping apparatus for tubular cooler |
| 11/01/1994 | US5361282 Dimensionally stable and corrosion-resistant fuel channels and related method of manufacture |
| 11/01/1994 | US5360784 Method for manufacturing an oxide superconducting tape |
| 11/01/1994 | US5359874 Method and apparatus for production of continuous metal strip |
| 10/26/1994 | EP0621104A1 Method and device for manufacturing heat-exchanger elements and corresponding ripped tube |
| 10/26/1994 | EP0621091A1 A method of forming a tubular member |
| 10/24/1994 | CA2121550A1 Method and device for manufacturing heat exchanger elements and tubular member used for the manufacture |
| 10/19/1994 | EP0620056A1 A method of forming a tubular structural member |
| 10/13/1994 | WO1994022612A1 Stiffening bulging |
| 10/13/1994 | WO1994022608A1 Pipe forming machine |
| 10/13/1994 | CA2160000A1 Dent profiling |
| 10/11/1994 | US5353639 Method and apparatus for sizing multiple tubes |
| 10/06/1994 | DE4311228A1 Method and edge-bending press for forming the edge strips on a metal sheet to be formed into a slotted tube |
| 10/06/1994 | DE4310272A1 Process for producing multilayered composite tubes with metal inserts |
| 10/05/1994 | CN1093161A Pipe for flowing of refrigerant in heat exchanger |
| 09/29/1994 | WO1994021837A1 Tube formed from steel strip having metal layer on one side |
| 09/28/1994 | EP0617250A2 Refrigerant tubes for heat exchangers |
| 09/21/1994 | EP0615474A1 Machine for forming helically wound lock-seam tubing having multiple wall thickness |
| 09/20/1994 | US5348213 Method for the manufacture of internally enhanced welded tubing |
| 09/14/1994 | EP0614712A1 Method and device for producing high strength tubes |
| 09/13/1994 | US5346116 Machine for forming a metal strip into a tubular form having a stop-restart displacement mechanism |
| 09/13/1994 | US5346112 Capstan draw apparatus for periodically gripping and drawing an elongated member |
| 09/13/1994 | CA2040132C Process and circuit for regulating welding current and power as a function of welding speed |
| 09/07/1994 | EP0613548A1 Perforated plates for cryogenic regenerators and method of fabrication |
| 09/06/1994 | US5344713 Corrosion resistant coating, drawing |
| 09/06/1994 | US5344062 Method of forming seamed metal tube |
| 08/24/1994 | CN1091070A Sizing method and equipment for spiral welding pipe |
| 08/24/1994 | CN1091062A Apparatus for forming a pipe from a sheet metal plate |
| 08/23/1994 | US5340524 Variable angular insertion method for lining tubular members |
| 08/18/1994 | DE4313826C1 Method of making holes in multilayered laminates |
| 08/18/1994 | DE4307156A1 Device for the production of thin-walled metal tubes |
| 08/16/1994 | US5338100 High strength automotive seat frame and method |
| 08/16/1994 | US5337477 Methods and apparatus for forming tubular risers and manifolds including tubular risers |
| 08/16/1994 | US5337476 Method of making a camshaft |
| 08/11/1994 | DE4403980A1 Protective tube for a belt tightener |
| 08/04/1994 | DE4302715A1 Appts. for producing longitudinally seamed pipes |
| 08/03/1994 | EP0608747A1 Method and apparatus for helically coiling tubes of oval or eliptical section |
| 08/02/1994 | US5333775 Hydroforming of compound tubes |
| 08/02/1994 | CA2003244C Method of manufacturing seamless tube formed of titanium material |
| 07/27/1994 | EP0607430A1 Apparatus for manufacturing welded steel pipe |
| 07/27/1994 | EP0335969B1 Apparatus for making helically wound interlocked flexible pipe |
| 07/26/1994 | CA2017584C Bent pipe |
| 07/21/1994 | WO1994015735A1 Improvements in rotary forging |
| 07/14/1994 | DE4300158A1 Mfr. of hollow axle body with nearly square final cross=section |
| 07/12/1994 | US5328587 Engraving funnel shaped holes in metal tubes and removal |
| 07/12/1994 | US5328086 Mechanism and method for removing twists in a tube forming machine |
| 07/12/1994 | US5327756 Method and apparatus for forming spiral grooves internally in metal tubing |
| 07/06/1994 | EP0604439A1 Finned tube. |
| 07/05/1994 | US5325693 Apparatus for the continuous production of helical or annular corrugated metal tubes |
| 07/05/1994 | CA1330481C Apparatus and method used in making wire and similar elongated members and wire made using same |
| 06/30/1994 | DE4243933A1 Method for deburring of workpieces - has flexible grinding belt guided by two rollers along edges and corners of workpiece, rounding being determined by belt tension |
| 06/28/1994 | US5323851 Parallel flow condenser with perforated webs |
| 06/23/1994 | WO1994013414A1 Process for manufacturing tubular parts |
| 06/22/1994 | EP0602413A1 Method of manufacturing latent heat storage cells for a heat accumulator of an automotive vehicle and device for carrying out this method |
| 06/22/1994 | CN1088143A Method for manufacture of inward concave iron specials |
| 06/22/1994 | CN1088140A Method of bending metallic pipe |
| 06/21/1994 | US5321889 Base drum of electrophotographic photoconductor and method for the preparation thereof |
| 06/15/1994 | EP0494299B1 Casing and flexible tubular duct comprising same |
| 06/15/1994 | EP0463039B1 Apparatus for forming a pipe from a sheet metal plate |
| 06/15/1994 | CN1025010C Multichannel pipe connection plastics forming technology and mould |
| 06/09/1994 | WO1994012298A1 A pipe structure, its manufacturing method and a resulting product |
| 06/08/1994 | EP0600394A1 Weld bead cutter mechanism |
| 05/31/1994 | US5316606 Polyethylene, acrylic acid-ethylene copolymer |
| 05/31/1994 | US5315904 Apparatus for cutting inner circumferential surface of thick walled small diameter pipe |
| 05/31/1994 | US5315854 Tube tapering apparatus having a variable orifice die |
| 05/26/1994 | WO1994011183A1 Method of making machine-engraved seamless tube |
| 05/25/1994 | EP0598371A1 Hot rolled steel wire rod, fine steel wire and twisted steel wire, and manufacture of the fine steel wire |
| 05/25/1994 | EP0597859A1 Heat exchanging element and method for the manufacture thereof. |
| 05/25/1994 | CN1024707C Fuel oil pipeline device of bus and mfg. method therefor |