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'HOMECOURT
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Publication of FR391472ApublicationCriticalpatent/FR391472A/fr
B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
B21B—ROLLING OF METAL
B21B23/00—Tube-rolling not restricted to methods provided for in only one of groups B21B17/00, B21B19/00, B21B21/00, e.g. combined processes planetary tube rolling, auxiliary arrangements, e.g. lubricating, special tube blanks, continuous casting combined with tube rolling
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Mechanical Engineering
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FR391472D1907-08-301907-08-30Procédé de fabrication de barres creuses
ExpiredFR391472A
(fr)