| More topics under "B22 - Casting; Powder metallurgy" (210,359) |
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| B22C - Foundry moulding (34,819) |
| B22D - Casting of metals; Casting of other substances by the same processes or devices (101,619) |
| B22F - Working metallic powder; Manufacture of articles from metallic powder; Making metallic powder; Apparatus or devices specially adapted for metallic powder (73,921) |