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Publication of FR1183186ApublicationCriticalpatent/FR1183186A/fr
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
B21C23/00—Extruding metal; Impact extrusion
B21C23/02—Making uncoated products
B21C23/04—Making uncoated products by direct extrusion
B21C23/08—Making wire, bars, tubes
B21C23/085—Making tubes
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FR1183186D1956-10-031957-09-20Procédé et dispositif de fabrication de pièces tubulaires cylindriques
ExpiredFR1183186A
(fr)