OPEN HEARTH FURNACES (STEEL PRODUCTION)
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BTSTEEL PRODUCTION + STEEL INDUSTRY (IRON METALLURGY)
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UDC669.183.211.1
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Descriptor GERSIEMENS-MARTIN-ÖFEN (STAHLHERSTELLUNG)
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Descriptor ENGOPEN HEARTH FURNACES (STEEL PRODUCTION)
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Descriptor FREFOURS SIEMENS-MARTIN (FABRICATION DE L'ACIER)
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Variant GERÖFEN/SIEMENS-MARTIN-ÖFEN (EISENHÜTTENKUNDE)
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Variant ENGFURNACES/OPEN HEARTH FURNACES (IRON METALLURGY)
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NTMULTIPLEX PROCESS, OPEN HEARTH FURNACES (STEEL PRODUCTION)
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NTSCRAP PROCESS, OPEN HEARTH FURNACES (STEEL PRODUCTION)