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.)
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 AGfiledCriticalDEUTSCHE ROHRENWERKE AG
Application grantedgrantedCritical
Publication of FR837546ApublicationCriticalpatent/FR837546A/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
Landscapes
Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
FR837546D1937-07-141938-05-05Laminoir à tubes
ExpiredFR837546A
(fr)