Making tubes of special shape; Making the fittings

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 > Making tubes of special shape; Making the fittings

Classification Context

Section:

PERFORMING OPERATIONS; TRANSPORTING

Class:

MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL

Subclass:

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

Child Classifications

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• B21C 37/16 Making tubes with varying diameter in longitudinal direction
• B21C 37/2 Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies
• B21C 37/22 Making finned or ribbed tubes by fixing strip or like material to tubes
• B21C 37/28 Making tube fittings for connecting pipes, e.g. U-pieces