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MANUF METALLURG de la JONCHERE
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MANUF METALLURG de la JONCHERE
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Application filed by MANUF METALLURG de la JONCHEREfiledCriticalMANUF METALLURG de la JONCHERE
Application grantedgrantedCritical
Publication of FR861621ApublicationCriticalpatent/FR861621A/fr
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
B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles 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
B21C37/124—Making tubes or metal hoses with helically arranged seams the tubes having a special shape, e.g. with corrugated wall, flexible tubes
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Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
FR861621D1939-08-011939-08-01Procédé et appareil pour la fabrication des tuyaux plissés
ExpiredFR861621A
(fr)