| B | SK | PERFORMING OPERATIONS; TRANSPORTING |
| B22 | KL | CASTING; POWDER METALLURGY |
| B22C | UKL | FOUNDRY MOULDING (moulding refractory materials in general B28B) |
| B22D | UKL | CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES (shaping of plastics or substances in a plastic state B29C; metallurgical processing, selection of substances to be added to metal C21 , C22) |
| B22F | UKL | WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER (processes or devices for granulating materials in general B01J 2/00; making ceramics by compacting or sintering C04B , e.g. C04B 35/64; for the production of metals as such, see class C22; reduction or decomposition of metal compounds in general C22B; making alloys by powder metallurgy C22C; electrolytic production of metal powder C25C 5/00) |