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Lapipe & Wittmann
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Lapipe & Wittmann
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Application filed by Lapipe & WittmannfiledCriticalLapipe & Wittmann
Application grantedgrantedCritical
Publication of FR564646ApublicationCriticalpatent/FR564646A/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
B21C37/10—Making tubes with riveted seams or with non-welded and non-soldered seams
B21C37/101—Making of the seams
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Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
FR564646D1923-04-031923-04-03Procédé de fabrication de tubes métalliques et produits nouveaux en résultant
ExpiredFR564646A
(fr)