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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Bundy Tubing Co
Original Assignee
Bundy Tubing Co
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Filing date
Publication date
Application filed by Bundy Tubing CofiledCriticalBundy Tubing Co
Application grantedgrantedCritical
Publication of FR794666ApublicationCriticalpatent/FR794666A/en
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
B21C37/09—Making tubes with welded or soldered seams of coated strip material ; Making multi-wall tubes
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Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
FR794666D1935-09-091935-09-09
Metal tube and method and apparatus for its manufacture
ExpiredFR794666A
(en)