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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03/22/1988 | US4732819 Light-weight vehicle frame structure |
03/17/1988 | DE3630625A1 Method for the production of an internally galvanised pipe (tube) |
03/16/1988 | EP0259607A2 Device for helical taping circular tubes with even uncorrugated band |
03/16/1988 | EP0259580A2 Production of a taper rod |
03/16/1988 | CN87105733A Contact conductor for electric vehicles |
03/15/1988 | US4730474 Method of relieving residual stress in metal pipe |
03/08/1988 | US4729155 Method of making heat transfer tube with improved outside surface for nucleate boiling |
03/02/1988 | EP0257904A2 Contact conductor for electric vehicles |
02/23/1988 | US4726211 Method of cold drawing seamless metal tubes each having an upset portion on each end |
02/18/1988 | DE3634242C1 Process for manufacturing a metallic semi-finished product |
02/16/1988 | US4724596 Method of making interlocked metal tube |
02/03/1988 | EP0255382A2 A method of manufacturing a clad bar |
02/03/1988 | EP0255313A2 Condenser |
02/02/1988 | US4722216 Radial forging method |
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 |
01/27/1988 | CN87104451A Fuel oil pipeline device of bus and mfg. method therefor |
01/20/1988 | EP0253167A1 Heat-exchanger, more particularly evaporator for refrigerant |
01/20/1988 | CN87105463A Technological method to mfr. the damageable pipe piece for conveying by the concrete pump |
01/19/1988 | US4719780 Tool point and its working method and tool for making and flanging a hole |
01/19/1988 | US4719680 Method for manufacturing a wound metallic exhaust gas catalyst carrier body having a geometrically complex cross-sectional shape |
01/07/1988 | EP0251181A2 Fuel pipe device for motor vehicles |
01/05/1988 | US4717065 Method for manufacturing welded pipes |
01/05/1988 | US4716750 Process for obtaining composite hollow members from variegated longitudinal strips, embodied with or without a removable core |
01/05/1988 | CA1231006A1 Apparatus for manufacturing flexible corrugated tubes |
12/29/1987 | US4715436 Construction of a heat transfer wall of a heat transfer pipe |
12/23/1987 | EP0249947A1 Device for the fabrication of pipes with straight beads using a metal strip |
12/17/1987 | DE3643794C1 Method for the production of a spiral falling-film evaporator tube |
12/15/1987 | US4712407 Apparatus for working surface of metal pipe |
12/08/1987 | US4711387 Method of producing pipes with crack arresters |
12/08/1987 | US4711110 Apparatus for crimping pipe |
12/08/1987 | CA1230065A1 Double-wall welded tube and method for producing said tube |
12/01/1987 | US4709845 Apparatus for continuously producing steel pipes including using rotable beds of tools for different size pipe |
11/17/1987 | US4706481 Apparatus for cutting hollow pipe |
11/17/1987 | US4706355 Method of making an internally grooved and expanded tubular heat exchanger apparatus |
11/10/1987 | US4704885 Apparatus for making connecting pipes for connecting ducts |
11/10/1987 | CA1229068A1 Methods of and devices for cold drawing seamless metal tubes each having upset portions on both ends |
11/04/1987 | EP0243795A2 Device for guiding rounded borders through a welding zone |
11/04/1987 | EP0243533A1 Method for maufacturing welded pipes |
11/03/1987 | US4704249 Lead molybdenum sulfide |
10/27/1987 | US4702096 Apparatus and process for providing tubing with at least one internal spiral groove or fin |
10/13/1987 | US4699226 Interchangeable conveying spiral for rock drills |
10/07/1987 | EP0239963A1 Automatic tab plate welding apparatus |
10/07/1987 | EP0239814A2 Profiled tube having an elliptical or lancet-shaped cross-section, for use in tubular heat exchangers, and method for its manufacture |
10/06/1987 | US4698205 Body with internal channels and methods of producing the same |
10/06/1987 | US4697324 Filamentary structural module for composites |
10/01/1987 | DE3610481A1 Process for producing pipes with one or more inner wall thickenings |
09/23/1987 | EP0237761A1 A method for manufacturing a heat exchanger |
09/22/1987 | US4694864 Double-wall tube for a heat exchanger |
09/16/1987 | EP0237234A2 Method for the production of a composite pipe and an apparatus for carrying out said method |
09/16/1987 | EP0236453A1 Metal strip manufacture |
09/15/1987 | US4692978 Method for making heat exchange tubes |
09/09/1987 | EP0112902B1 Double l-shaped electrode for brine electrolysis cell |
09/02/1987 | EP0234578A1 Method of manufacture of manifolds and manifold provided by such method |
09/01/1987 | US4690211 Heat transfer tube for single phase flow |
08/26/1987 | EP0233659A1 Steel wire for reinforcing elastomer articles |
08/25/1987 | US4688319 Multi-layer helical seam steel pipe |
08/19/1987 | EP0232331A1 Roll forming of metal articles. |
08/18/1987 | US4687690 Method of and means for forming and sealing helically wound tubes |
08/13/1987 | DE3702088A1 Device for processing the inside wall of a hollow cylindrical workpiece |
08/11/1987 | US4685204 Arrangement for drawing transverse ribs |
07/23/1987 | DE3601287A1 Device for holding the strip and pipe edges to be welded in the welding of spiral-welded pipes |
07/21/1987 | US4680845 Method of manufacturing lateral header extensions |
07/08/1987 | EP0227674A1 Method and device for the helicoidal winding of sheet-like material. |
07/01/1987 | EP0227386A2 Improved tube-coating method and apparatus therefor |
06/30/1987 | US4676876 Method for manufacturing components such as heat exchangers, heat absorbers, rocket engines or the like |
06/30/1987 | US4676088 T-joint manufacturing apparatus |
06/24/1987 | EP0226025A2 Method and apparatus for producing finned tubes |
06/24/1987 | EP0118451B1 Method for the manufacture of a conical tubular member, and a member manufactured according to the method |
06/23/1987 | US4675489 Through guide for rounded blanks on a seam welding machine |
06/23/1987 | US4674542 Double-wall welded tube |
06/16/1987 | US4672834 Method for making extended heat transfer surfaces and a tool for putting said method into practice |
06/11/1987 | DE3542336A1 Process for the production of spirally welded tubes |
06/04/1987 | DE3542681A1 Process for the production of drawn high-quality tubes |
06/03/1987 | CN86105158A Finned heat transfer device and method for making same |
05/27/1987 | EP0223534A2 Heat Exchangers |
05/27/1987 | DE3540684A1 Multi-core electrical power cable, in particular supply cable for well-head equipment |
05/20/1987 | EP0222285A2 Method and apparatus for making a corrugated tube by helically winding a thin corrugated strip, preferably a steel strip |
05/20/1987 | EP0222166A1 High-strength conductors and process for manufacturing same |
05/20/1987 | EP0222100A2 Finned tube with a notched groove bottom and method for making it |
05/13/1987 | EP0221841A2 Method of making tubes for heat exchangers |
05/12/1987 | US4665305 Corrosion resistant metal pipe with electrode for oil wells |
05/12/1987 | US4663954 Method and apparatus for the corrugating of metal tubes |
05/12/1987 | US4663812 Method of manufacture of manifolds |
05/05/1987 | US4662143 Method for the manufacture of a conical tubular member, and a member manufactured according to the method |
04/29/1987 | EP0219592A2 Method and apparatus for forming an air gap pipe |
04/29/1987 | CN86106745A Processing for welding galvanized steel pipe |
04/28/1987 | US4661215 Process for the production of tin-plated wires |
04/28/1987 | US4660754 Process of forming welded tubing |
04/28/1987 | US4660630 Heat transfer tube having internal ridges, and method of making same |
04/23/1987 | WO1987002287A1 Tube manufacturing device |
04/21/1987 | CA1220761A1 Double l-shaped electrode for brine electrolysis cell |
04/16/1987 | DE3534510A1 Installation for the production of helical-seam tubes |
04/14/1987 | US4656713 Method for forming an air gap pipe |
04/07/1987 | CA1220094A1 Strip of flexible corrugated material |
03/26/1987 | WO1987001626A1 Metal strip manufacture |
03/24/1987 | US4651915 Mobile pipe mill |
03/24/1987 | US4651914 Mobile pipe mill |
03/18/1987 | EP0214784A1 Finned heat transfer device and method for making same |
03/17/1987 | US4649728 Integral joint forming of work-hardenable high alloy tubing |