IPC Subgroup
B21D 51/02 characterised by the structure of the objects
Introduced: September 1968
Last revised: January 2006
Full Title
Making hollow objects > characterised by the structure of the objects
Classification Context
- Section:
- PERFORMING OPERATIONS; TRANSPORTING
- Class:
- MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- Subclass:
- WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
6 direct subcodes
Child Classifications
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- B21D 51/04 built-up objects, e.g. objects with rigidly-attached bottom or cover
- B21D 51/06 folded objects
- B21D 51/08 ball-shaped objects
- B21D 51/1 conically or cylindrically shaped objects
- B21D 51/12 objects with corrugated walls
- B21D 51/14 Flattening hollow objects for transport or storage; Subsequent re-forming