DIFF Subgroup
C21C 5/04 Manufacture of hearth-furnace steel, e.g. Siemens-Martin steel
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Manufacture of carbon steel, e.g. plain mild steel, medium carbon steel, or cast-steel > Manufacture of hearth-furnace steel, e.g. Siemens-Martin steel
CPC:
Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel > Manufacture of hearth-furnace steel, e.g. Siemens-Martin steel
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
Child Classifications
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