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Phoenix AG
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Phoenix AG
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Publication of FR27407EpublicationCriticalpatent/FR27407E/fr
B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
B21B—ROLLING OF METAL
B21B25/00—Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
B21B25/04—Cooling or lubricating mandrels during operation
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Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
FR27407D1923-02-031923-02-03Procédé pour la préparation de lingots ou billettes perforés destinés à produire des tubes sans soudure
ExpiredFR27407E
(fr)