FR2401712B1 - - Google Patents

Info

Publication number
FR2401712B1
FR2401712B1 FR7820696A FR7820696A FR2401712B1 FR 2401712 B1 FR2401712 B1 FR 2401712B1 FR 7820696 A FR7820696 A FR 7820696A FR 7820696 A FR7820696 A FR 7820696A FR 2401712 B1 FR2401712 B1 FR 2401712B1
Authority
FR
France
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
FR7820696A
Other languages
French (fr)
Other versions
FR2401712A1 (fr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KM Kabelmetal AG
Original Assignee
KM Kabelmetal AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by KM Kabelmetal AG filed Critical KM Kabelmetal AG
Publication of FR2401712A1 publication Critical patent/FR2401712A1/fr
Application granted granted Critical
Publication of FR2401712B1 publication Critical patent/FR2401712B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/151—Making tubes with multiple passages

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Arc Welding In General (AREA)
  • Metal Extraction Processes (AREA)
FR7820696A 1977-08-29 1978-07-11 Procede de fabrication de tubes a deux canaux a paroi mince Granted FR2401712A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772738862 DE2738862C2 (de) 1977-08-29 1977-08-29 Verfahren zur Herstellung von dünnwandigen Zweikanalrohren

Publications (2)

Publication Number Publication Date
FR2401712A1 FR2401712A1 (fr) 1979-03-30
FR2401712B1 true FR2401712B1 (de) 1983-11-04

Family

ID=6017569

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7820696A Granted FR2401712A1 (fr) 1977-08-29 1978-07-11 Procede de fabrication de tubes a deux canaux a paroi mince

Country Status (2)

Country Link
DE (1) DE2738862C2 (de)
FR (1) FR2401712A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU5145999A (en) * 1998-08-19 2000-03-14 Ums Schweizerische Metallwerke Ag Electrically-conductive hollow profile
DE102012006015B4 (de) 2012-03-24 2014-03-27 Modine Manufacturing Co. Verfahren und Vorrichtung zur Herstellung von Rohren

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2693026A (en) * 1950-02-17 1954-11-02 Modine Mfg Co Method of making concentric tubes with radial fins
US2950376A (en) * 1957-04-05 1960-08-23 Wogerbauer Alfred Method and apparatus for the manufacture of sections
GB860569A (en) * 1958-02-28 1961-02-08 Simobar Patents Ltd Improvements in methods for the production of corrugated finned tubes
GB990230A (en) * 1960-08-24 1965-04-28 Ass Elect Ind Improvements in gas or vapour adsorption apparatus using solid adsorbents
NL6606867A (de) * 1965-05-20 1966-11-21

Also Published As

Publication number Publication date
FR2401712A1 (fr) 1979-03-30
DE2738862C2 (de) 1985-11-28
DE2738862A1 (de) 1979-03-22

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Legal Events

Date Code Title Description
ST Notification of lapse