| 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 (making alloys by powder metallurgy C22C); APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER |