of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes

Full Title

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

Child Classifications

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• B21C 37/065
• B21C 37/08 Making tubes with welded or soldered seams
• B21C 37/10 Making tubes with riveted seams
• B21C 37/12 Making tubes or metal hoses with helically arranged seams
• B21C 37/14 Making tubes from doubled flat material
• B21C 37/15 Making tubes of special shape; Making fittings
• B21C 37/30 Finishing tubes, e.g. sizing, burnishing