US3720994A - Method of forming metal tubing - Google Patents

Method of forming metal tubing Download PDF

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US3720994A
US3720994A US00201298A US3720994DA US3720994A US 3720994 A US3720994 A US 3720994A US 00201298 A US00201298 A US 00201298A US 3720994D A US3720994D A US 3720994DA US 3720994 A US3720994 A US 3720994A
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Prior art keywords
tubing
tape
metal
tab
folded
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US00201298A
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R Wagele
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KM Kabelmetal AG
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KM Kabelmetal AG
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/045—Hoses, i.e. flexible pipes made of rubber or flexible plastics with four or more layers without reinforcement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/08—Making tubes with welded or soldered seams
    • B21C37/09—Making tubes with welded or soldered seams of coated strip material ; Making multi-wall tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/10—Making tubes with riveted seams or with non-welded and non-soldered seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/26—Lining or sheathing of internal surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L2011/047—Hoses, i.e. flexible pipes made of rubber or flexible plastics with a diffusion barrier layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49888—Subsequently coating

Definitions

  • the outer edges of the tab portions are metallicaly integrated as by welding to form a fluid proof seam.
  • the metal tubing is then stiffened by applying a metal adherent resin coating to the outer surface thereof.
  • a jacketing of synthetic resin may be applied over the coating.
  • An object of this invention is to provide an improved method of forming metal tubing from very thin metal tape, wherein the the metal tape is folded about a flexible non-metallic tubing to convert the same to tubular form; the marginal edge portions of the metal tape providing contacting, radial tab portions which are seamed together and folded over into contact with the tubing.
  • the non-metallic tubing provides an improved mandrel and avoids any kinking in the tin metal tape as the same is converted to tubular form.
  • Another object of this invention is to provide a method of the character described, wherein the nonmetallic tubing may be separated from the formed metal tubing.
  • a further object of this invention is to provide a method of the character described, wherein the nonmetallic tubing is in integrated relation to the metal tubing as by interposing a layer of adhesive between the tubings; the non-metallic tubing being formed of suitable synthetic resins to afford resistance to corrosive media which may be transported through the tubing.
  • FIG. l is a side elevational view illustrating the method of the instant invention.
  • FIG. 2 is a transverse section taken on the line 2-2 of FIG. ll;
  • FIG. 3 is an enlarged transverse sectional view showing tubing made by the method ofthe invention.
  • the method of making metal tubing in accordance with the instant invention comprises folding a thin metal tape to tubular form about a flexible mandrel of non-metallic material such as synthetic resin, or the like.
  • the folded tape is ofa width such as to provide tab portions derived from the marginal edge portions of the tape, which are in face to face relation and extend radially of the tubing.
  • the tab portions are integrated at their outer edges as by welding or the like; folded over into contact with the outer surface of the metal tubing.
  • a coating of metal adherent synthetic resin is then applied to the outer surface of the metal tubing, and may be followed by a jacketing of synthetic resin.
  • the flexible mandrel may be removed from the finished tubing of selected length; or, may be integrated with the metal tubing by interposing a layer of adhesive between the tubings.
  • Metal tape M is drawn from a supply reel, not shown; such tape being of aluminum, copper, stainless steel, or the like, with a thickness not exceeding 0.3 mm.
  • the tape M is moved along a forming table T where it is converted to tubular form.
  • Mandrel 40 preferably formed of a synthetic resin in tubular form.
  • Mandrel 40 is coaxially related to known folding means 21 which effects the conversion of the tape M to tubular form.
  • the tape Ml has a width greater then the circumference of the tubing 11 being formed; marginal portions of the tape indicated at 22 are disposed in face to face relation and extend radially with respect to the tubing.
  • the tab forming portions 22 are trimmed as by trimming means 23, to provide tabs 15, thus making outer edges 16 coextensive; the trimmed portions 22A being suitably removed.
  • edges 16 of tabs 15 are oxide free, which is particularly important when tape M is aluminum, since such edges 16 now pass in proper alignment to an integrating zone 25 where welding means 26. located in suitably spaced relation to edges 16, produces a longitudinally extending weldment 17.
  • the welding operation takes place under a protective u atmosphere of argon or the like, in a manner known in the art.
  • Resin coating 18 is of the type disclosed in U.S. Pat. Nos. 2,987,501 and 3,027,346, and essentially are copolymers of polyethylene and selected monomers.
  • a jacketing coating 19 may then be applied over coating 18, as by an extruder 29.
  • Coating 19 may be of polyethylene, polyvinyl chloride or the like. The tubing thus formed is drawn off by suitable draw-off means, no shown. 7
  • the tubing 40 in addition to providing mandrel means for forming metal tubing 11, may also be integrated with tubing 11, as by applying a coating of adhesive 42 to the outer surface of tubing 40, as by coating die 41.
  • adhesives may be thermosetting so that upon reaching zone 25, the welding means 26 will provide the heat for setting coating 42.
  • the heat of extruders 28, 29 may also insure the bonding action of adhesive coating 42.
  • the tubing 40 is preferably of a synthetic resin such as polyamide (Nylon) or polytetrafluorethylene (Teflon) with a wall thickness of the order of from 1.0 to 3.0 mm. for tubings ranging in diameters of 10 to mm.
  • the adhesive 42 is thus selected in accordance with the nature of the resin forming tubing 40. Accordingly, the finished, composite tubing, FIG. 3; is adequate to carry corrosive media in liquid or gaseous form Alternatively, the tubing mandrel 40 may be separated from the formed tubing 11, in which case the adhesive coating 42 is omitted. In this case, tubing 11 is formed in selected lengths, thereby allowing for removal of tubing 40 therefrom.
  • the method of forming metal tubing from a metal tape having a thickness not exceeding 0.30 mm. comprising moving a non-metallic tubing in a longitudinal path, continuously folding said tape about the outer surface of said non-metallic tubing and bringing longitudinal marginal portions of said tape into face to face relation to form a longitudinally extending radial tab, metallically integrating the longitudinal exposed edges only of said tab to form a fluid proof seam while leaving said tab of uniform thickness from the base to the outer edge thereof, folding said tab at the base thereof into contact with outer surface portions of said folded tape, and applying a synthetic resin coating in bonding relation to the outer surface of said folded tape.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Laminated Bodies (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

A method of forming metal tubing from very thin metal tape, wherein the tape is folded about a non-metallic tubing to convert the same into tubular form; the marginal edge portions of the tape providing tab portions extending radially and in contacting relation, the tab portions being metallically integrated at their outer edges and then folded about the base thereof into contact with the outer surface of the metal tubing; the non-metallic tubing being selectively (1) removed from the formed metal tubing; or (2) retained to form a liner for the metal tubing.

Description

ilnited States atent 1 1 Wa ele 5]March 20 3973 [5 METHOD OF FORMING METAL 2,066,025 12/1936 Zublin et al. ..29/477 TUBING 3,332,138 7/1967 Garner ..29 477.7 x 3,639,970 2/1972 ..29/477.7 X Inventor: Rolf Wagele, Isemhagen, 3,657,809 4/1972 .....29/477.7 x many 3,692,063 9/1972 Wagele ..138/l7l X [73] Assignee: Kabel-und Metallwerke Gutehoft- FOREIGN PATENTS 0R APPLICATIONS mmgshutte Aktiengesellschaft, Hannover, Germany 589,600 5/1930 Germany ..29/473.7
[ Filedi 1971 Primary Examiner-J. Spencer Overholser Assistant Examiner-Richard Bernard Lazarus [2]] Appl' 20l298 Attorney-Philip G. Hilbert [30] Foreign Application Priority Data [57] ABSTRACT Nov.27, 1970 Germany ..P 20 58 379.3 A method of forming metal tubing from very thin metal tape, wherein the tape is folded about a non- 52 us. (:1. ..29/477.7, 29/4733, 29/4739, metallic tubing to convert the same into tubular form; 29 4 0 13 /171 the marginal edge portions of the tape providing tab 51 11m. 01. ..B23k 311/02 portions extending radially and in contacting relation, [58] Field of 29/475 477 477 7 4 0 473 3 the tab portions being metallically integrated at their 29/473] 4739 4741. 138/171 156 outer edges and then folded about the base thereof into contact with the outer surface of the metal tubing; the non-metallic tubing being selectively (1) [56] References Cited removed from the formed metal tubing; or (2) UNlTED STATES PATENTS retained to form a liner for the metal tubing.
1,945,594 2/1934 Chase et al. ..29/477.7 X 8 Claims, 3 Drawing Figures METHOD OF FORMING METAL TUBING BACKGROUND OF THE INVENTION In the copending application Ser. No. 865,097, filed Oct. 9, 1969 and assigned to the same assignee as this application, there is disclosed a method of forming metal tubing derived from very thin metal tape. Such tubing is designed to carry liquid or gaseous, heated or cooled media. In such method the longitudinally extending thin metal tape is folded into tubular form with the marginal edge portions of the tape raised to form a longitudinally extending tab portion with marginal portions in face to face contact.
Further, in such method, the outer edges of the tab portions are metallicaly integrated as by welding to form a fluid proof seam. The metal tubing is then stiffened by applying a metal adherent resin coating to the outer surface thereof. A jacketing of synthetic resin may be applied over the coating.
An object of this invention is to provide an improved method of forming metal tubing from very thin metal tape, wherein the the metal tape is folded about a flexible non-metallic tubing to convert the same to tubular form; the marginal edge portions of the metal tape providing contacting, radial tab portions which are seamed together and folded over into contact with the tubing. The non-metallic tubing provides an improved mandrel and avoids any kinking in the tin metal tape as the same is converted to tubular form.
Another object of this invention is to provide a method of the character described, wherein the nonmetallic tubing may be separated from the formed metal tubing.
A further object of this invention is to provide a method of the character described, wherein the nonmetallic tubing is in integrated relation to the metal tubing as by interposing a layer of adhesive between the tubings; the non-metallic tubing being formed of suitable synthetic resins to afford resistance to corrosive media which may be transported through the tubing.
Other objects of this invention will in part be obvious and in part hereinafter pointed out.
DESCRIPTION OF THE DRAWING FIG. l is a side elevational view illustrating the method of the instant invention;
FIG. 2 is a transverse section taken on the line 2-2 of FIG. ll; and
FIG. 3 is an enlarged transverse sectional view showing tubing made by the method ofthe invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS Essentially, the method of making metal tubing in accordance with the instant invention comprises folding a thin metal tape to tubular form about a flexible mandrel of non-metallic material such as synthetic resin, or the like. The folded tape is ofa width such as to provide tab portions derived from the marginal edge portions of the tape, which are in face to face relation and extend radially of the tubing.
The tab portions are integrated at their outer edges as by welding or the like; folded over into contact with the outer surface of the metal tubing. A coating of metal adherent synthetic resin is then applied to the outer surface of the metal tubing, and may be followed by a jacketing of synthetic resin.
The flexible mandrel may be removed from the finished tubing of selected length; or, may be integrated with the metal tubing by interposing a layer of adhesive between the tubings.
Thus, as shown in FIG. 1, the method of the instant invention may be carried out by the apparatus set forth. Metal tape M is drawn from a supply reel, not shown; such tape being of aluminum, copper, stainless steel, or the like, with a thickness not exceeding 0.3 mm. The tape M is moved along a forming table T where it is converted to tubular form.
To this end there is provided a mandrel 40, preferably formed of a synthetic resin in tubular form. Mandrel 40 is coaxially related to known folding means 21 which effects the conversion of the tape M to tubular form.
As the tape Ml has a width greater then the circumference of the tubing 11 being formed; marginal portions of the tape indicated at 22 are disposed in face to face relation and extend radially with respect to the tubing. Preferably, the tab forming portions 22 are trimmed as by trimming means 23, to provide tabs 15, thus making outer edges 16 coextensive; the trimmed portions 22A being suitably removed.
The freshly trimmed edges 16 of tabs 15 are oxide free, which is particularly important when tape M is aluminum, since such edges 16 now pass in proper alignment to an integrating zone 25 where welding means 26. located in suitably spaced relation to edges 16, produces a longitudinally extending weldment 17.
The welding operation takes place under a protective u atmosphere of argon or the like, in a manner known in the art.
The resultant tab seam 15 is then folded over from its radial disposition, by suitable folding die 27, against the outer surface of tubing 11. A metal adherent synthetic resin coating 18 is applied over tubing 11 by an extruder 28. Resin coating 18 is of the type disclosed in U.S. Pat. Nos. 2,987,501 and 3,027,346, and essentially are copolymers of polyethylene and selected monomers.
A jacketing coating 19 may then be applied over coating 18, as by an extruder 29. Coating 19 may be of polyethylene, polyvinyl chloride or the like. The tubing thus formed is drawn off by suitable draw-off means, no shown. 7
The tubing 40 in addition to providing mandrel means for forming metal tubing 11, may also be integrated with tubing 11, as by applying a coating of adhesive 42 to the outer surface of tubing 40, as by coating die 41. Such adhesives may be thermosetting so that upon reaching zone 25, the welding means 26 will provide the heat for setting coating 42. Also, the heat of extruders 28, 29 may also insure the bonding action of adhesive coating 42.
The tubing 40 is preferably of a synthetic resin such as polyamide (Nylon) or polytetrafluorethylene (Teflon) with a wall thickness of the order of from 1.0 to 3.0 mm. for tubings ranging in diameters of 10 to mm. The adhesive 42 is thus selected in accordance with the nature of the resin forming tubing 40. Accordingly, the finished, composite tubing, FIG. 3; is adequate to carry corrosive media in liquid or gaseous form Alternatively, the tubing mandrel 40 may be separated from the formed tubing 11, in which case the adhesive coating 42 is omitted. In this case, tubing 11 is formed in selected lengths, thereby allowing for removal of tubing 40 therefrom.
Iclaim:
1. The method of forming metal tubing from a metal tape having a thickness not exceeding 0.30 mm. comprising moving a non-metallic tubing in a longitudinal path, continuously folding said tape about the outer surface of said non-metallic tubing and bringing longitudinal marginal portions of said tape into face to face relation to form a longitudinally extending radial tab, metallically integrating the longitudinal exposed edges only of said tab to form a fluid proof seam while leaving said tab of uniform thickness from the base to the outer edge thereof, folding said tab at the base thereof into contact with outer surface portions of said folded tape, and applying a synthetic resin coating in bonding relation to the outer surface of said folded tape.
2. The method as in claim 1 and further including the step of removing the non-metallic tubing from the metal tubing formed by the folded metal tape.
3. The method as in claim 1 and further including the step of applying an adhesive coating between the opposed surface portions of said non-metallic tubing and said folded metal tape, whereby to bond said nonmetallic tubing to the metal tubing.
4. The method as in claim 3, wherein said non-metallic tubing is formed of polyamide.
5. The method as in claim 3, wherein said non-metallic tubing is formed of polytetrafluorethylene.
6. The method as in claim 3, wherein the exposed edges of said tab are welded together, said adhesive coating being thermoresponsive and set to a bonding condition by the welding step.
7. The method as in claim 1, wherein said synthetic resin coating is a monomer-polyethylene copolymer and further including the step of applying a jacketing layer of synthetic resin to the outer surface of said synthetic resin coating.
8. The method as in claim 1, wherein said non-metallic tubing has a wall thickness of from 1.0 to 3.0 mm.

Claims (8)

1. The method of forming metal tubing from a metal tape having a thickness not exceeding 0.30 mm. comprising moving a nOn-metallic tubing in a longitudinal path, continuously folding said tape about the outer surface of said non-metallic tubing and bringing longitudinal marginal portions of said tape into face to face relation to form a longitudinally extending radial tab, metallically integrating the longitudinal exposed edges only of said tab to form a fluid proof seam while leaving said tab of uniform thickness from the base to the outer edge thereof, folding said tab at the base thereof into contact with outer surface portions of said folded tape, and applying a synthetic resin coating in bonding relation to the outer surface of said folded tape.
2. The method as in claim 1 and further including the step of removing the non-metallic tubing from the metal tubing formed by the folded metal tape.
3. The method as in claim 1 and further including the step of applying an adhesive coating between the opposed surface portions of said non-metallic tubing and said folded metal tape, whereby to bond said non-metallic tubing to the metal tubing.
4. The method as in claim 3, wherein said non-metallic tubing is formed of polyamide.
5. The method as in claim 3, wherein said non-metallic tubing is formed of polytetrafluorethylene.
6. The method as in claim 3, wherein the exposed edges of said tab are welded together, said adhesive coating being thermoresponsive and set to a bonding condition by the welding step.
7. The method as in claim 1, wherein said synthetic resin coating is a monomer-polyethylene copolymer and further including the step of applying a jacketing layer of synthetic resin to the outer surface of said synthetic resin coating.
8. The method as in claim 1, wherein said non-metallic tubing has a wall thickness of from 1.0 to 3.0 mm.
US00201298A 1970-11-27 1971-11-23 Method of forming metal tubing Expired - Lifetime US3720994A (en)

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DE19702058379 DE2058379A1 (en) 1970-11-27 1970-11-27 Process for the production of a tubular structure

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5194460A (en) * 1975-02-17 1976-08-19 GOSEIJUSHIHIFUKUKINZOKUKATOKAN OYOBI SONOSEIZOHOHO
US4541686A (en) * 1982-04-30 1985-09-17 Siemens Aktiengesellschaft Cable construction
US5000369A (en) * 1988-11-22 1991-03-19 Allied Tube & Conduit Corporation Method and apparatus for manufacturing plastic-lined pipe
US5054679A (en) * 1988-11-22 1991-10-08 Allied Tube & Conduit Corporation Apparatus for manufacturing plastic-lined pipe
US5451718A (en) * 1993-04-08 1995-09-19 Southwire Company Mechanically bonded metal sheath for power cable
EP1811596A1 (en) * 2006-01-20 2007-07-25 Alcatel Lucent Radio frequency waveguide comprising an electric conductor made of a plastic foil layer laminated with an electric conductive material layer
WO2009061566A1 (en) * 2007-11-07 2009-05-14 Parker-Hannifin Corporation Aluminum foil based hose
US20090263598A1 (en) * 2006-08-31 2009-10-22 Luvata Oy Method for producing a metal tube by clad rolling one more profiles to form at least one channel, a clad rolling mill for joining one or more profiles, a clad rolled metal tube
CN102615861A (en) * 2012-04-05 2012-08-01 如皋市万通防腐有限公司 Process for manufacturing fluorine-lined pipeline
US20210400856A1 (en) * 2020-06-23 2021-12-23 Intel Corporation Additive manufacturing for integrated circuit assembly cables
US11842826B2 (en) 2020-06-23 2023-12-12 Intel Corporation Additive manufacturing for integrated circuit assembly connector support structures
US11887944B2 (en) 2020-06-23 2024-01-30 Intel Corporation Additive manufacturing for integrated circuit assembly connectors

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DE4310272A1 (en) † 1993-03-30 1994-10-06 Emil Heinrich Friedrich Process for producing multilayered composite tubes with metal inserts
GB2328727A (en) * 1997-09-01 1999-03-03 Draftex Ind Ltd Fluid transporting pipe with metallic layer

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US1945594A (en) * 1929-11-23 1934-02-06 Chase Method of and apparatus for manufacturing tubing
US2066025A (en) * 1935-07-24 1936-12-29 Zublin Method of making a metal tube
US3332138A (en) * 1965-08-11 1967-07-25 Gen Cable Corp Method and apparatus for making precision sized tubing
US3639970A (en) * 1969-10-02 1972-02-08 Phillips Petroleum Co Method and apparatus for forming plastic-lined metal conduit
US3657809A (en) * 1967-09-14 1972-04-25 Kabel Metallwerke Ghh Process for making thin metal tubing
US3692063A (en) * 1970-03-17 1972-09-19 Kabel Metallwerke Ghh Flexible waveguide and method of producing

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US1945594A (en) * 1929-11-23 1934-02-06 Chase Method of and apparatus for manufacturing tubing
DE589600C (en) * 1930-05-17 1933-12-11 Metall Walz U Plattierwerke Hi Metal barrel made of bimetal
US2066025A (en) * 1935-07-24 1936-12-29 Zublin Method of making a metal tube
US3332138A (en) * 1965-08-11 1967-07-25 Gen Cable Corp Method and apparatus for making precision sized tubing
US3657809A (en) * 1967-09-14 1972-04-25 Kabel Metallwerke Ghh Process for making thin metal tubing
US3639970A (en) * 1969-10-02 1972-02-08 Phillips Petroleum Co Method and apparatus for forming plastic-lined metal conduit
US3692063A (en) * 1970-03-17 1972-09-19 Kabel Metallwerke Ghh Flexible waveguide and method of producing

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5194460A (en) * 1975-02-17 1976-08-19 GOSEIJUSHIHIFUKUKINZOKUKATOKAN OYOBI SONOSEIZOHOHO
US4541686A (en) * 1982-04-30 1985-09-17 Siemens Aktiengesellschaft Cable construction
US5000369A (en) * 1988-11-22 1991-03-19 Allied Tube & Conduit Corporation Method and apparatus for manufacturing plastic-lined pipe
US5054679A (en) * 1988-11-22 1991-10-08 Allied Tube & Conduit Corporation Apparatus for manufacturing plastic-lined pipe
US5451718A (en) * 1993-04-08 1995-09-19 Southwire Company Mechanically bonded metal sheath for power cable
US7683744B2 (en) 2006-01-20 2010-03-23 Alcatel Lucent Radio frequency waveguide comprising an electric conductor made of a plastic foil layer laminated with a electric conductive material layer
EP1811596A1 (en) * 2006-01-20 2007-07-25 Alcatel Lucent Radio frequency waveguide comprising an electric conductor made of a plastic foil layer laminated with an electric conductive material layer
US20070171007A1 (en) * 2006-01-20 2007-07-26 Alcatel Lucent Radio frequency waveguide comprising an electric conductor made of a plastic foil layer laminated with a electric conductive material layer
US20090263598A1 (en) * 2006-08-31 2009-10-22 Luvata Oy Method for producing a metal tube by clad rolling one more profiles to form at least one channel, a clad rolling mill for joining one or more profiles, a clad rolled metal tube
JP2011503471A (en) * 2007-11-07 2011-01-27 パーカー・ハニフィン・コーポレーション Aluminum foil hose
WO2009061566A1 (en) * 2007-11-07 2009-05-14 Parker-Hannifin Corporation Aluminum foil based hose
US20110017338A1 (en) * 2007-11-07 2011-01-27 Nikhil Baxi Aluminum foil based hose
JP2014122706A (en) * 2007-11-07 2014-07-03 Parker Hannifin Corp Aluminum foil based hose
KR101496222B1 (en) 2007-11-07 2015-02-26 파커-한니핀 코포레이션 Aluminum foil based hose
US9234610B2 (en) 2007-11-07 2016-01-12 Parker-Hannifin Corporation Aluminum foil based hose
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CN102615861B (en) * 2012-04-05 2014-11-19 如皋市万通防腐有限公司 Process for manufacturing fluorine-lined pipeline
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US11842826B2 (en) 2020-06-23 2023-12-12 Intel Corporation Additive manufacturing for integrated circuit assembly connector support structures
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DE2058379A1 (en) 1972-06-08
FR2115131B2 (en) 1974-02-15
BE764642R (en) 1971-08-16
DD98564A6 (en) 1973-06-20
CH550032A (en) 1974-06-14
GB1317340A (en) 1973-05-16
ZA712077B (en) 1971-12-29
NL7104692A (en) 1972-05-30
BR7103047D0 (en) 1973-04-17
FR2115131A2 (en) 1972-07-07
IT989578B (en) 1975-06-10

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