Making hollow articles not covered by any single one of groups

Classification Context

Section:

PERFORMING OPERATIONS; TRANSPORTING

Class:

MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL

Subclass:

MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS

Related Keywords

Child Classifications

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• B21K 21/02 Producing blanks in the shape of discs or cups as semi-finished articles for making hollow articles, e.g. to be deep-drawn or extruded
• B21K 21/04 Shaping thin-walled hollow articles, e.g. cartridges
• B21K 21/06 Shaping thick-walled hollow articles, e.g. projectiles
• B21K 21/08 Shaping hollow articles with different cross-section in longitudinal direction, e.g. nozzles, spark-plugs
• B21K 21/12 Shaping end portions of hollow articles
• B21K 21/16 Remodelling hollow bodies with respect to the shape of the cross-section