B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
B21C23/00—Extruding metal; Impact extrusion
B21C23/22—Making metal-coated products; Making products from two or more metals
B21C23/24—Covering indefinite lengths of metal or non-metal material with a metal coating
Verfahren und Vorrichtung zum Formen durch Streckblasen von Behältern, insbesondere Flaschen aus thermoplastischem Material mit blütenblattförmigem Boden
Piece metallique emboutie cylindrique creuse, son procede d'obtention et utilisation de cette piece comme manchon d'habillage ou bouchon amovible pour flacon