FR1568993A - - Google Patents

Info

Publication number
FR1568993A
FR1568993A FR1568993DA FR1568993A FR 1568993 A FR1568993 A FR 1568993A FR 1568993D A FR1568993D A FR 1568993DA FR 1568993 A FR1568993 A FR 1568993A
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
Other languages
French (fr)
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 filed Critical
Application granted granted Critical
Publication of FR1568993A publication Critical patent/FR1568993A/fr
Expired 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, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles 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
    • B21C37/22—Making finned or ribbed tubes by fixing strip or like material to tubes
    • B21C37/24—Making finned or ribbed tubes by fixing strip or like material to tubes annularly-ribbed tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
FR1568993D 1968-03-19 1968-03-19 Expired FR1568993A (enExample)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR144314 1968-03-19

Publications (1)

Publication Number Publication Date
FR1568993A true FR1568993A (enExample) 1969-05-30

Family

ID=8647661

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1568993D Expired FR1568993A (enExample) 1968-03-19 1968-03-19

Country Status (2)

Country Link
DE (1) DE1909729A1 (enExample)
FR (1) FR1568993A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0264548A3 (en) * 1986-10-24 1988-10-12 Gesellschaft Fur Schwerionenforschung Mbh Process for attaching external perpendicular ribs to tubes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0264548A3 (en) * 1986-10-24 1988-10-12 Gesellschaft Fur Schwerionenforschung Mbh Process for attaching external perpendicular ribs to tubes
US4815651A (en) * 1986-10-24 1989-03-28 Gesellschaft Fur Schwerionenforschung Mbh Procedure for attachment of vertically oriented ribs on the outside of pipes

Also Published As

Publication number Publication date
DE1909729A1 (de) 1970-02-12

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Legal Events

Date Code Title Description
ST Notification of lapse