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FR820792A - Manufacturing process for conical tubes - Google Patents

Manufacturing process for conical tubes

Info

Publication number
FR820792A
FR820792A FR820792DA FR820792A FR 820792 A FR820792 A FR 820792A FR 820792D A FR820792D A FR 820792DA FR 820792 A FR820792 A FR 820792A
Authority
FR
France
Prior art keywords
manufacturing process
conical tubes
conical
tubes
manufacturing
Prior art date
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)
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.)
DEUTSCHE ROHRENWERKE AG
Original Assignee
DEUTSCHE ROHRENWERKE 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 DEUTSCHE ROHRENWERKE AG filed Critical DEUTSCHE ROHRENWERKE AG
Application granted granted Critical
Publication of FR820792A publication Critical patent/FR820792A/en
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 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
    • B21C37/16—Making tubes with varying diameter in longitudinal direction
    • B21C37/18—Making tubes with varying diameter in longitudinal direction conical tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
FR820792D 1936-07-25 1937-04-19 Manufacturing process for conical tubes Expired FR820792A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE820792X 1936-07-25

Publications (1)

Publication Number Publication Date
FR820792A true FR820792A (en) 1937-11-18

Family

ID=6738224

Family Applications (1)

Application Number Title Priority Date Filing Date
FR820792D Expired FR820792A (en) 1936-07-25 1937-04-19 Manufacturing process for conical tubes

Country Status (1)

Country Link
FR (1) FR820792A (en)

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