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DEUTSCHE ROHRENWERKE AG
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DEUTSCHE ROHRENWERKE AG
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Application filed by DEUTSCHE ROHRENWERKE AGfiledCriticalDEUTSCHE ROHRENWERKE AG
Application grantedgrantedCritical
Publication of FR778482ApublicationCriticalpatent/FR778482A/fr
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
B21B19/12—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 parallel to the axis of the work
B21B19/14—Rolling tubes by means of additional rollers arranged inside the tubes
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Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
FR778482D1933-11-251934-09-14Procédé et laminoir pour la fabrication de tubes
ExpiredFR778482A
(fr)