| Patents for B21C 1 - Manufacture of metal sheets, wire, rods,tubesor like semi-manufactured productsby drawing (5,150) |
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| 09/18/1991 | EP0446499A1 Method of lowering the drawing speed of drum drawing machines |
| 09/18/1991 | CN1013933B Quincunx dies and technology for cold-drawing triangle steel |
| 09/04/1991 | CN1013742B Method of and apparatus for producing tubes with small diameter and thick wall |
| 08/28/1991 | CN1054049A Apparatus for towing and guiding long articles |
| 08/21/1991 | EP0442037A1 Device to draw-off or guide long items |
| 08/20/1991 | US5040426 Drive mechanism for moving a member along a defined path |
| 06/27/1991 | WO1991009188A1 Steel wire for reinforcing the embedding material, especially concrete, and process for making it |
| 06/26/1991 | EP0433767A1 Continuous drawing method for straight drawing operations and device that employs the method |
| 05/28/1991 | US5018378 Mold making |
| 05/14/1991 | US5014531 Method for automatically reducing the drawing speed of a tubular material drawing machine |
| 04/24/1991 | EP0423378A1 Method of continuously drawing metal tubes |
| 04/18/1991 | DE4012961A1 Wire drawing high carbon wire - using drawing coating which reduces contact surface of wire during cold working process |
| 04/10/1991 | CN2074685U Automatic adjusting clamping device for cold drawing machine |
| 03/26/1991 | US5001825 Catheter guidewire fabrication method |
| 03/20/1991 | CN1049986A Method of manufacturing specialpipe for drilling and apparatus therefor |
| 03/19/1991 | US4999901 Method of producing a nozzle member for sucking or transporting a string of yarn |
| 03/12/1991 | US4998429 Method for drawing tubular material |
| 03/07/1991 | DE3929022A1 Hydraulic cylinder tube mfr. process - involves using mandrel bar and braking ring |
| 02/13/1991 | CN2071095U Horizental wire winch |
| 01/16/1991 | CN2069313U Forming device for cold drawing arc pipe |
| 01/16/1991 | CN1048509A Discharge mechanism of cold-drawing bench and the drawing force displayer |
| 12/27/1990 | EP0403916A1 Method for production of ribbed reinforcing steel |
| 12/26/1990 | CN2068023U Automatic hard-drawn fixed length cutting device for reinforcing bar |
| 12/26/1990 | CN1047988A Portable cold drawing device for prestressed steel bars |
| 11/28/1990 | CN1047229A Technology for drawing-rolling circular pipe with long-mandrel roll die |
| 11/22/1990 | EP0397876A1 Method and device for making profiled pipes used for well construction |
| 11/22/1990 | EP0283484B1 Expandible mandrel for tube-drawing machine |
| 11/15/1990 | DE4012960A1 Wire prodn. for material with carbon content over 0.035 per cent - involves applying thermally stable and mechanically loadable sepg. layer and drawing wire in one or more stages |
| 11/06/1990 | CA1275970C Cold drawing technique and apparatus for forming internally grooved tubes |
| 10/16/1990 | US4962658 Method and apparatus for straight drawing a pipe |
| 10/03/1990 | EP0390482A1 Method of manufacturing long tubes having small diameters |
| 09/26/1990 | EP0388824A2 Method and apparatus for drawing tubular bodies |
| 09/26/1990 | CN2062657U Grip-draw unit on cold-drawing machine of metal metarials |
| 09/05/1990 | CN1045040A Apparatus and technology for cold-rolling steel reinforcement with thread |
| 09/04/1990 | US4953321 Fishhook and producing method of the same |
| 08/28/1990 | US4952249 Intermediate coating of steel wire |
| 08/15/1990 | CN2060374U Wet wire-drawing bench |
| 08/14/1990 | US4947665 Apparatus for the electrical control of an in-line drawing machine |
| 08/09/1990 | DE3903063A1 Method for drawing seamless metal tubes |
| 08/08/1990 | EP0380735A1 Fishhook and producing method of the same |
| 07/25/1990 | CN2059604U Wiredrawing machine for metallic wire rod |
| 06/28/1990 | WO1990006825A1 Tensile stress generator |
| 06/06/1990 | EP0371165A1 Motion drive |
| 05/31/1990 | WO1990005598A1 Method and device for making profiled pipes used for well construction |
| 05/29/1990 | US4928507 Methods and apparatus for manufacturing seamless tube |
| 05/22/1990 | US4926668 Automatic die box positioning for drawblock |
| 05/02/1990 | CN2056613U Forced wire-drawing bench |
| 04/18/1990 | CN2056099U Wire stretcher |
| 04/17/1990 | US4917285 Dual capstan in-line wire drawing machine |
| 04/12/1990 | DE3837318A1 Apparatus for drawing fine and super-fine wire |
| 04/11/1990 | CN2055752U Flower-drum type mould for cold drawing of steel pipes |
| 04/11/1990 | CN2055751U Reinforcement cold drawing bench with multi-way and multiple terminal |
| 03/28/1990 | CN2055070U Cold draw bench stuff outlet mechanism and drawing force display equipment |
| 03/21/1990 | CN1040522A Quincunx dies and technology for cold-drawing triangle steel |
| 03/21/1990 | CN1007214B Mfg. of oriening-helix seamless steel-pipe used for rocket guns |
| 02/28/1990 | CN2053547U Protective device of drawing die's lead-wire |
| 02/20/1990 | US4901550 Manufacturing method of extra fine wire |
| 02/07/1990 | EP0353324A1 Method for the straight drawing of tubes, and device for carrying out the method |
| 02/07/1990 | CN2052310U V-shaped wiredrawing machine |
| 02/07/1990 | CN1006690B 拔丝机 Wire drawing machine |
| 01/10/1990 | CN2050785U Auto-continuous hard-drawn draught attachment of concrete iron |
| 01/02/1990 | US4890470 Loop transport system for a plurality of baskets containing material to be drawn through a drawing machine |
| 01/02/1990 | CA1264154A1 Wire drawing method and apparatus |
| 12/28/1989 | WO1989012514A1 Wire drawing apparatus and method |
| 12/20/1989 | EP0346534A2 Wire drawing apparatus and method |
| 12/05/1989 | US4884430 Filament drawing machine |
| 11/30/1989 | DE3902844C1 Apparatus for the automatic feeding of bull-block machines with drawing stock in strand form, especially tubes |
| 11/23/1989 | EP0342642A1 Fabrication method of a work piece from a long blank or an intermediate product |
| 11/14/1989 | US4879892 Drawing machine for continuous drawing of endless wires or tubes |
| 11/01/1989 | CN1036717A A c speed-regulating automatic control system for looping drawing machne |
| 10/31/1989 | US4876869 Inner grooving process for a metallic tube |
| 10/11/1989 | EP0336189A2 Application of a wire drawing tool of silicon carbide |
| 09/27/1989 | EP0334295A2 Method and apparatus for shaping tubular bodies |
| 09/27/1989 | CN2044912U Cold bed drawing mechanism |
| 09/19/1989 | US4866966 Method and apparatus for producing bypass grooves |
| 08/29/1989 | US4860568 Tubular material drawing apparatus for manufacturing precision tube |
| 08/15/1989 | US4856703 Method for drawing seamless metal tubing particularly copper tubing under inclusion of a floating mandrel and a diameter reducing die |
| 08/08/1989 | US4854148 Cold drawing technique and apparatus for forming internally grooved tubes |
| 08/02/1989 | EP0326085A2 Production of nozzle member |
| 07/05/1989 | EP0322889A2 Manufacturing method of extra fine wire |
| 06/28/1989 | CN2040011U Cone pulley for metal-wire drawing machine |
| 06/13/1989 | US4838063 Applying low melting metal(s) and flux to interior of tube; heating |
| 05/31/1989 | EP0317905A2 Method of drawing weldless tubes |
| 05/24/1989 | CN2038035U Unhook type double chain tractor for tube drawing |
| 05/10/1989 | CN2037268U 液压拉拔机 Hydraulic drawing machine |
| 05/10/1989 | CN1032758A Method of and apparatus for producing tubes with small diameter and thick wall |
| 05/09/1989 | US4827752 Wire drawing machine with wire-relaxing roller |
| 05/03/1989 | EP0313896A1 Manufacturing method and device for manufacturing optical cables |
| 03/15/1989 | EP0306608A2 Drawing machine |
| 03/14/1989 | US4812721 Wire drawing control apparatus |
| 03/14/1989 | US4811888 Method and apparatus for manufacturing small diameter, thick walled, cable sheaths |
| 03/01/1989 | CN1031442A Method of manufacturing composite oxides ceramics type superconductor line |
| 02/21/1989 | US4805435 Method for producing aluminum drums having highly smooth surface |
| 02/21/1989 | US4805434 Method for straight-line drawing of round material |
| 02/08/1989 | EP0302791A2 A process for producing an elongated sintered article |
| 02/01/1989 | EP0301999A2 Circulating transfer system for a number of baskets for a drum drawing machine |
| 01/11/1989 | CN2030513U Y-shaped cold-rolled screw wire machine |
| 01/04/1989 | CN2030115U Cold-drawn rolling die for making screwed steel |
| 12/28/1988 | CA1247501A Methods and apparatus for drawing wire |
| 12/22/1988 | DE3718353A1 Method of drawing metal tubes |