FR584630A - Method and device for the manufacture of double-walled pipes - Google Patents

Method and device for the manufacture of double-walled pipes

Info

Publication number
FR584630A
FR584630A FR584630DA FR584630A FR 584630 A FR584630 A FR 584630A FR 584630D A FR584630D A FR 584630DA FR 584630 A FR584630 A FR 584630A
Authority
FR
France
Prior art keywords
manufacture
double
walled pipes
walled
pipes
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)
Inventor
Friedrich Barme
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 FR584630A publication Critical patent/FR584630A/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
    • B21C25/00—Profiling tools for metal extruding
FR584630D 1923-08-27 1924-08-14 Method and device for the manufacture of double-walled pipes Expired FR584630A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE584630X 1923-08-27

Publications (1)

Publication Number Publication Date
FR584630A true FR584630A (en) 1925-02-10

Family

ID=6571719

Family Applications (1)

Application Number Title Priority Date Filing Date
FR584630D Expired FR584630A (en) 1923-08-27 1924-08-14 Method and device for the manufacture of double-walled pipes

Country Status (1)

Country Link
FR (1) FR584630A (en)

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