Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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ESCHWEILER-KOELN-HUETTEN-AKTIENGESELLSCHAFT
Original Assignee
ESCHWEILER-KOELN-HUETTEN-AKTIENGESELLSCHAFT
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Application filed by ESCHWEILER-KOELN-HUETTEN-AKTIENGESELLSCHAFTfiledCriticalESCHWEILER-KOELN-HUETTEN-AKTIENGESELLSCHAFT
Application grantedgrantedCritical
Publication of FR327424ApublicationCriticalpatent/FR327424A/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
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Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
FR327424D1902-12-171902-12-17Perfectionnements dans la fabrication des tuyaux
ExpiredFR327424A
(fr)