DIFF Subgroup
C21D 7/02 by cold working
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Modifying the physical properties of iron or steel by deformation > by cold working
CPC:
Modifying the physical properties of iron or steel by deformation (apparatus for mechanical working of metal B21, B23, B24) > by cold working
IPC and CPC are identically structured here. All 2 subcodes exist in both systems.
Child Classifications
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- C21D 7/10 of the whole cross-section, e.g. of concrete reinforcing bars +1 CPC IPC+CPC Available in IPC and CPC