FR870221A - Process for manufacturing tube blanks - Google Patents

Process for manufacturing tube blanks

Info

Publication number
FR870221A
FR870221A FR870221DA FR870221A FR 870221 A FR870221 A FR 870221A FR 870221D A FR870221D A FR 870221DA FR 870221 A FR870221 A FR 870221A
Authority
FR
France
Prior art keywords
tube blanks
manufacturing tube
manufacturing
blanks
tube
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.)
Vodafone GmbH
Original Assignee
Mannesmannroehren Werke 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 Mannesmannroehren Werke AG filed Critical Mannesmannroehren Werke AG
Application granted granted Critical
Publication of FR870221A publication Critical patent/FR870221A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
    • B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
    • B21B19/06—Rolling hollow basic material, e.g. Assel mills

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
FR870221D 1938-12-14 1941-02-21 Process for manufacturing tube blanks Expired FR870221A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE870221X 1938-12-14

Publications (1)

Publication Number Publication Date
FR870221A true FR870221A (en) 1942-03-05

Family

ID=6804682

Family Applications (1)

Application Number Title Priority Date Filing Date
FR870221D Expired FR870221A (en) 1938-12-14 1941-02-21 Process for manufacturing tube blanks

Country Status (1)

Country Link
FR (1) FR870221A (en)

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