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Societe Anonyme pour lIndustrie de lAluminium SA
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Societe Anonyme pour lIndustrie de lAluminium SA
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Application filed by Societe Anonyme pour lIndustrie de lAluminium SAfiledCriticalSociete Anonyme pour lIndustrie de lAluminium SA
Priority to FR861361ApriorityCriticalpatent/FR1289123A/fr
Application grantedgrantedCritical
Publication of FR1289123ApublicationCriticalpatent/FR1289123A/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
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
B21C37/14—Making tubes from double flat material
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Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
FR861361A1961-05-101961-05-10Procédé de fabrication d'un tube à paroi double et tube fabriqué selon ce procédé
ExpiredFR1289123A
(fr)