C | Sektion C — Chemie; Hüttenwesen | CHEMISTRY; METALLURGY | |||||
Hüttenwesen | METALLURGY | ||||||
C21 | Eisenhüttenwesen | METALLURGY OF IRON | |||||
C21B | Gewinnung von Eisen oder Stahl (Vorbehandlung von Eisenerzen oder Schrott C22B 1/00) | MANUFACTURE OF IRON OR STEEL (preliminary treatment of ferrous ores or scrap C22B 1/00) | |||||
C21B 7/00 | Hochöfen [1, 2006.01] | Blast furnaces [1, 2006.01] | |||||
C21B 7/16 |
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