DIFF Main Group
C21C 1/00 Refining of pig-iron; Cast iron
Introduced: September 1968
IPC and CPC are identically structured here. All 5 subcodes exist in both systems.
1 shared codes have differing titles between IPC and CPC.
Child Classifications
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- C21C 1/04 Removing impurities other than carbon, phosphorus or sulfur IPC+CPC Available in IPC and CPC