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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
B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
B21C37/12—Making tubes or metal hoses with helically arranged seams
B21C37/121—Making tubes or metal hoses with helically arranged seams with non-welded and non-soldered seams
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FR1063742D1952-09-291952-09-29Procédé de fabrication de tuyan, outillage pour la mise en oeuvre de ce procédé et tuyau obtenu par ce procédé
ExpiredFR1063742A
(fr)
Procédé de fabrication d'un tube stratifié pouvant être comprimé, appareil pour la mise en oeuvre dudit procédé et tube stratifié obtenu par ce procédé
Palier amortisseur de chocs, principalement mais non exclusivement pour mouvements d'horlogerie, procédé pour la fabrication de ce palier et outil pour la mise en oeuvre de ce procédé