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)
03/1988
03/22/1988US4732819 Light-weight vehicle frame structure
03/17/1988DE3630625A1 Method for the production of an internally galvanised pipe (tube)
03/16/1988EP0259607A2 Device for helical taping circular tubes with even uncorrugated band
03/16/1988EP0259580A2 Production of a taper rod
03/16/1988CN87105733A Contact conductor for electric vehicles
03/15/1988US4730474 Method of relieving residual stress in metal pipe
03/08/1988US4729155 Method of making heat transfer tube with improved outside surface for nucleate boiling
03/02/1988EP0257904A2 Contact conductor for electric vehicles
02/1988
02/23/1988US4726211 Method of cold drawing seamless metal tubes each having an upset portion on each end
02/18/1988DE3634242C1 Process for manufacturing a metallic semi-finished product
02/16/1988US4724596 Method of making interlocked metal tube
02/03/1988EP0255382A2 A method of manufacturing a clad bar
02/03/1988EP0255313A2 Condenser
02/02/1988US4722216 Radial forging method
02/02/1988US4722213 Method of cold drawing a metal tube
01/1988
01/27/1988EP0254028A2 Drawing device for the continuous drawing of a bar-shaped or tubular material rod
01/27/1988CN87104451A Fuel oil pipeline device of bus and mfg. method therefor
01/20/1988EP0253167A1 Heat-exchanger, more particularly evaporator for refrigerant
01/20/1988CN87105463A Technological method to mfr. the damageable pipe piece for conveying by the concrete pump
01/19/1988US4719780 Tool point and its working method and tool for making and flanging a hole
01/19/1988US4719680 Method for manufacturing a wound metallic exhaust gas catalyst carrier body having a geometrically complex cross-sectional shape
01/07/1988EP0251181A2 Fuel pipe device for motor vehicles
01/05/1988US4717065 Method for manufacturing welded pipes
01/05/1988US4716750 Process for obtaining composite hollow members from variegated longitudinal strips, embodied with or without a removable core
01/05/1988CA1231006A1 Apparatus for manufacturing flexible corrugated tubes
12/1987
12/29/1987US4715436 Construction of a heat transfer wall of a heat transfer pipe
12/23/1987EP0249947A1 Device for the fabrication of pipes with straight beads using a metal strip
12/17/1987DE3643794C1 Method for the production of a spiral falling-film evaporator tube
12/15/1987US4712407 Apparatus for working surface of metal pipe
12/08/1987US4711387 Method of producing pipes with crack arresters
12/08/1987US4711110 Apparatus for crimping pipe
12/08/1987CA1230065A1 Double-wall welded tube and method for producing said tube
12/01/1987US4709845 Apparatus for continuously producing steel pipes including using rotable beds of tools for different size pipe
11/1987
11/17/1987US4706481 Apparatus for cutting hollow pipe
11/17/1987US4706355 Method of making an internally grooved and expanded tubular heat exchanger apparatus
11/10/1987US4704885 Apparatus for making connecting pipes for connecting ducts
11/10/1987CA1229068A1 Methods of and devices for cold drawing seamless metal tubes each having upset portions on both ends
11/04/1987EP0243795A2 Device for guiding rounded borders through a welding zone
11/04/1987EP0243533A1 Method for maufacturing welded pipes
11/03/1987US4704249 Lead molybdenum sulfide
10/1987
10/27/1987US4702096 Apparatus and process for providing tubing with at least one internal spiral groove or fin
10/13/1987US4699226 Interchangeable conveying spiral for rock drills
10/07/1987EP0239963A1 Automatic tab plate welding apparatus
10/07/1987EP0239814A2 Profiled tube having an elliptical or lancet-shaped cross-section, for use in tubular heat exchangers, and method for its manufacture
10/06/1987US4698205 Body with internal channels and methods of producing the same
10/06/1987US4697324 Filamentary structural module for composites
10/01/1987DE3610481A1 Process for producing pipes with one or more inner wall thickenings
09/1987
09/23/1987EP0237761A1 A method for manufacturing a heat exchanger
09/22/1987US4694864 Double-wall tube for a heat exchanger
09/16/1987EP0237234A2 Method for the production of a composite pipe and an apparatus for carrying out said method
09/16/1987EP0236453A1 Metal strip manufacture
09/15/1987US4692978 Method for making heat exchange tubes
09/09/1987EP0112902B1 Double l-shaped electrode for brine electrolysis cell
09/02/1987EP0234578A1 Method of manufacture of manifolds and manifold provided by such method
09/01/1987US4690211 Heat transfer tube for single phase flow
08/1987
08/26/1987EP0233659A1 Steel wire for reinforcing elastomer articles
08/25/1987US4688319 Multi-layer helical seam steel pipe
08/19/1987EP0232331A1 Roll forming of metal articles.
08/18/1987US4687690 Method of and means for forming and sealing helically wound tubes
08/13/1987DE3702088A1 Device for processing the inside wall of a hollow cylindrical workpiece
08/11/1987US4685204 Arrangement for drawing transverse ribs
07/1987
07/23/1987DE3601287A1 Device for holding the strip and pipe edges to be welded in the welding of spiral-welded pipes
07/21/1987US4680845 Method of manufacturing lateral header extensions
07/08/1987EP0227674A1 Method and device for the helicoidal winding of sheet-like material.
07/01/1987EP0227386A2 Improved tube-coating method and apparatus therefor
06/1987
06/30/1987US4676876 Method for manufacturing components such as heat exchangers, heat absorbers, rocket engines or the like
06/30/1987US4676088 T-joint manufacturing apparatus
06/24/1987EP0226025A2 Method and apparatus for producing finned tubes
06/24/1987EP0118451B1 Method for the manufacture of a conical tubular member, and a member manufactured according to the method
06/23/1987US4675489 Through guide for rounded blanks on a seam welding machine
06/23/1987US4674542 Double-wall welded tube
06/16/1987US4672834 Method for making extended heat transfer surfaces and a tool for putting said method into practice
06/11/1987DE3542336A1 Process for the production of spirally welded tubes
06/04/1987DE3542681A1 Process for the production of drawn high-quality tubes
06/03/1987CN86105158A Finned heat transfer device and method for making same
05/1987
05/27/1987EP0223534A2 Heat Exchangers
05/27/1987DE3540684A1 Multi-core electrical power cable, in particular supply cable for well-head equipment
05/20/1987EP0222285A2 Method and apparatus for making a corrugated tube by helically winding a thin corrugated strip, preferably a steel strip
05/20/1987EP0222166A1 High-strength conductors and process for manufacturing same
05/20/1987EP0222100A2 Finned tube with a notched groove bottom and method for making it
05/13/1987EP0221841A2 Method of making tubes for heat exchangers
05/12/1987US4665305 Corrosion resistant metal pipe with electrode for oil wells
05/12/1987US4663954 Method and apparatus for the corrugating of metal tubes
05/12/1987US4663812 Method of manufacture of manifolds
05/05/1987US4662143 Method for the manufacture of a conical tubular member, and a member manufactured according to the method
04/1987
04/29/1987EP0219592A2 Method and apparatus for forming an air gap pipe
04/29/1987CN86106745A Processing for welding galvanized steel pipe
04/28/1987US4661215 Process for the production of tin-plated wires
04/28/1987US4660754 Process of forming welded tubing
04/28/1987US4660630 Heat transfer tube having internal ridges, and method of making same
04/23/1987WO1987002287A1 Tube manufacturing device
04/21/1987CA1220761A1 Double l-shaped electrode for brine electrolysis cell
04/16/1987DE3534510A1 Installation for the production of helical-seam tubes
04/14/1987US4656713 Method for forming an air gap pipe
04/07/1987CA1220094A1 Strip of flexible corrugated material
03/1987
03/26/1987WO1987001626A1 Metal strip manufacture
03/24/1987US4651915 Mobile pipe mill
03/24/1987US4651914 Mobile pipe mill
03/18/1987EP0214784A1 Finned heat transfer device and method for making same
03/17/1987US4649728 Integral joint forming of work-hardenable high alloy tubing
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