| Patents for B21C 1 - Manufacture of metal sheets, wire, rods,tubesor like semi-manufactured productsby drawing (5,150) |
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| 12/21/1988 | EP0295919A2 Cold drawing technique and apparatus for forming internally grooved tubes |
| 12/14/1988 | CN87104077A Cold-drawing technology of high-frequency welded thin-wall steel pipe |
| 12/06/1988 | US4788841 Method and apparatus for making step wall tubing |
| 11/30/1988 | EP0292697A2 wire drawing machine |
| 11/30/1988 | CN87103588A Simply constructed equipment for producing high-precision cold-drawn seamless steel pipe |
| 11/23/1988 | EP0292039A1 Intermediate coating of steel wire |
| 11/09/1988 | EP0290331A2 Superconducting composite |
| 11/09/1988 | CN88103217A 拔丝机 Wire drawing machine |
| 11/09/1988 | CN87103183A Antipressure anticorrosion complex pipe and its manufactural technology |
| 11/03/1988 | DE3712542A1 Method for shaping the internal surfaces of tubes |
| 10/26/1988 | EP0288086A2 Device for the reverse drawing of bars and relative method |
| 10/04/1988 | CA1242563A1 Sizing molds for continuous casting |
| 09/28/1988 | EP0283484A1 Expandible mandrel for tube-drawing machine. |
| 09/22/1988 | DE3707890A1 Method and apparatus for pulling long stock through a die |
| 09/22/1988 | DE3707889A1 Apparatus for pulling long stock of circular cross-section through a die |
| 09/13/1988 | US4770847 Control of differential growth in nuclear reactor components by control of metallurgical conditions |
| 09/08/1988 | DE3724469C1 Preliminary bench for a drawing installation for sectional bars (tubes) |
| 09/07/1988 | EP0281444A1 Process for manufacturing a superconducting wire of compound oxide-type ceramic |
| 09/01/1988 | DE3739730C1 Method for drawing seamless metal tubes |
| 08/30/1988 | US4766751 Apparatus for continuously producing tube having helical grooves in its inner surface |
| 08/18/1988 | DE3724473C1 Clamping device for sectional bars to be deformed in a drawing installation |
| 08/17/1988 | CN87216006U Equipment for producing high-precision cold-drawn steel tube |
| 08/04/1988 | DE3702066A1 Cold-rolling mill for large tubes |
| 08/03/1988 | EP0276958A2 Method of producing aluminum drums having highly smooth surfaces |
| 08/03/1988 | CN87202787U Transmission system of drawbench with dual speed reducer connected in parallel |
| 07/05/1988 | US4754633 Methods and apparatus for drawing wire |
| 06/14/1988 | US4750344 Wire drawing apparatus and method |
| 06/09/1988 | DE3644560C1 Sledge drive for a drawing machine |
| 06/07/1988 | US4748835 Plug drawing of tubes and other hollow items |
| 05/24/1988 | US4745787 Plug drawing |
| 04/20/1988 | CN87208093U Steel tube cold-drawing equipment |
| 04/05/1988 | US4735071 Apparatus for continuously producing tube having helical grooves in its inner surface |
| 03/31/1988 | DE3632522A1 Method and installation for the production of tube blanks |
| 03/24/1988 | WO1988001915A1 Expandible mandrel for tube-drawing machine |
| 03/10/1988 | DE3628871A1 Method for the multiple drawing of steel wire |
| 02/23/1988 | US4726211 Method of cold drawing seamless metal tubes each having an upset portion on each end |
| 02/23/1988 | CA1233140A1 Spinner drive for double block wire drawing machine |
| 02/18/1988 | DE3634242C1 Process for manufacturing a metallic semi-finished product |
| 02/18/1988 | DE3627829A1 Apparatus for the cold-drawing of tubes |
| 02/18/1988 | DE3627828A1 Method and apparatus for the cold-drawing of tubes |
| 02/10/1988 | EP0255740A1 Drive unit for draw benches |
| 02/10/1988 | EP0255590A2 Drawing device for tubes with a cambered wall at the end |
| 02/02/1988 | US4722213 Method of cold drawing a metal tube |
| 01/27/1988 | EP0254028A2 Drawing device for the continuous drawing of a bar-shaped or tubular material rod |
| 01/07/1988 | DE3622529A1 Wire redrawing apparatus |
| 12/31/1987 | CN87201936U Core rod position changing device for heavy-duty pipe extractor |
| 12/17/1987 | DE3634229C1 Device for grasping a tube to be drawn |
| 12/15/1987 | US4712407 Apparatus for working surface of metal pipe |
| 11/10/1987 | CA1229068A1 Methods of and devices for cold drawing seamless metal tubes each having upset portions on both ends |
| 11/04/1987 | EP0243789A2 Method for manufacturing moulds for continuous-casting machines |
| 10/15/1987 | DE3612824A1 Hydraulic long-stroke drive for pipe-drawing machines or similar working machines |
| 10/06/1987 | US4697447 Plug drawing of tubes and other hollow items |
| 09/02/1987 | EP0234211A1 Method and device for drawing wire |
| 08/25/1987 | US4688411 Method for continuous drawing of wire rod |
| 08/18/1987 | US4687422 Continuous extrusion apparatus |
| 07/29/1987 | EP0230221A2 Preparation bench for a tube-drawing installation |
| 07/23/1987 | DE3637036C1 Method and apparatus for the production of bar-drawn tubes |
| 07/16/1987 | DE3642769C1 Method and apparatus for rolling a pierced blank into a tube blank |
| 05/20/1987 | CN86100348A Cold-drawing technology of automatic pressurizing and lubricating for metal tubes |
| 05/05/1987 | US4662203 Multistage wire drawing apparatus |
| 04/07/1987 | US4655065 Plug drawing of tubes and other hollow items |
| 02/24/1987 | US4644769 Wire drawing method and apparatus |
| 02/17/1987 | CA1217997A1 High strength, low carbon, dual phase steel rods and wires and process for making same |
| 02/12/1987 | DE3621520A1 Device for compensating fluctuations in the rpm of a drive shaft |
| 02/11/1987 | CN86101467A Mfg. of oriening-helix seamless steel-pipe used for rocket guns |
| 01/06/1987 | US4633699 Continuous extrusion apparatus |
| 11/12/1986 | CN85104457A Apparatus for processing terminal end of tube |
| 11/05/1986 | EP0200423A2 Double block wire accumulator |
| 11/04/1986 | US4620433 Wire cooling apparatus for a wire drawing machine |
| 11/04/1986 | US4620432 Device for manufacturing microwire |
| 10/29/1986 | EP0198942A1 Method for manufacturing consumable welding spacer and product produced thereby |
| 10/14/1986 | US4616500 Method for producing tubing of varying wall thickness |
| 10/07/1986 | US4615195 Process and apparatus for high speed fabrication of copper wire |
| 08/19/1986 | US4606212 Device for cold drawing seamless metal tubes having upset portions on both ends |
| 08/12/1986 | US4604883 Mass flow control system for wire drawing machine |
| 07/30/1986 | EP0189294A2 Improvements in or relating to the plug drawing of tubes and other hollow items |
| 07/30/1986 | EP0189293A2 Improvements in or relating to the plug drawing of tubes and other hollow items |
| 07/29/1986 | CA1208602A1 Wire drawing method and apparatus |
| 06/04/1986 | EP0182922A1 Method of straight-drawing round material and tube, and solid and hollow profiles, and installation therefor |
| 04/15/1986 | US4581912 Apparatus for processing terminal ends of tubes |
| 04/01/1986 | US4578972 Apparatus for drawing wire |
| 03/11/1986 | US4574604 Process and apparatus for high speed fabrication of copper wire |
| 03/04/1986 | US4573336 Method and apparatus for wire drawing |
| 02/25/1986 | CA1201086A1 Method for manufacturing microwire and device for effecting same |
| 01/21/1986 | US4565664 Seamless; turning mandrel on its axis; horizontal type press |
| 01/07/1986 | US4562716 Wire cooling system for use in a wire drawing machine |
| 12/18/1985 | EP0165171A2 Wire-cooling device for a wire-drawing machine |
| 12/04/1985 | EP0163471A2 Method for continuous drawing of wire rod |
| 11/19/1985 | US4553416 Dry type continuous wire drawing process |
| 10/30/1985 | EP0159426A1 Method and apparatus for cold drawing seamless metal tubes having upset portions at both ends |
| 10/22/1985 | US4548657 Bow control for metallic structures |
| 10/10/1985 | CN85101434A Manufacture of fin - tube |
| 10/08/1985 | US4545229 Method for manufacturing microwire and device for effecting same |
| 10/08/1985 | US4545227 Apparatus for dry type continuous wire drawing |
| 09/16/1985 | EP0128139A4 High strength, low carbon, dual phase steel rods and wires and process for making same. |
| 09/04/1985 | EP0153495A2 Method of drawing a seamless metal tube |
| 08/06/1985 | US4532791 Arrangement and operation thereof for threading a rotatable assembly |
| 07/17/1985 | EP0148514A2 Method and apparatus for cold drawing and imparting curvature to metal tubes |
| 05/08/1985 | EP0140679A2 Improved wire drawing method and apparatus |
| 05/07/1985 | US4515000 Method for manufacturing consumable welding spacer |