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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Sumitomo Heavy Industries Ltd
Original Assignee
Sumitomo Heavy Industries Ltd
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Publication date
Application filed by Sumitomo Heavy Industries LtdfiledCriticalSumitomo Heavy Industries Ltd
Priority to JP1295383ApriorityCriticalpatent/JPS59141313A/ja
Publication of JPS59141313ApublicationCriticalpatent/JPS59141313A/ja
Publication of JPH0160325B2publicationCriticalpatent/JPH0160325B2/ja
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
B21C37/15—Making tubes of special shape; Making tube fittings
B21C37/22—Making finned or ribbed tubes by fixing strip or like material to tubes