Furnaces for treating strips or wire

Introduced: September 1968

Full Title

Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor > for wires; for strips > Furnaces for treating strips or wire

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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C21D 9/56 Continuous furnaces for strip or wire +2 CPC IPC+CPC Available in IPC and CPC
C21D 9/64 Patenting furnaces IPC+CPC Available in IPC and CPC
C21D 9/66 Tower-type furnaces IPC+CPC Available in IPC and CPC
C21D 9/663 Bell-type furnaces since 1980 IPC+CPC Available in IPC and CPC
C21D 9/68 Furnace coilers; Hot coilers (cold coilers B21C47/00) IPC+CPC Available in IPC and CPC