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F GRIMAULT LE SOUFACHE ET FELIX Ste
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F GRIMAULT LE SOUFACHE ET FELIX Ste
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Application filed by F GRIMAULT LE SOUFACHE ET FELIX StefiledCriticalF GRIMAULT LE SOUFACHE ET FELIX Ste
Application grantedgrantedCritical
Publication of FR337899ApublicationCriticalpatent/FR337899A/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
B21C37/08—Making tubes with welded or soldered seams
B21C37/0803—Making tubes with welded or soldered seams the tubes having a special shape, e.g. polygonal tubes
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Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
FR337899D1903-12-211903-12-21Perfectionnements dans la fabrication des tubes serve
ExpiredFR337899A
(fr)