DIFF Subgroup
C21D 7/10 of the whole cross-section, e.g. of concrete reinforcing bars
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Modifying the physical properties of iron or steel by deformation > by cold working > of the whole cross-section, e.g. of concrete reinforcing bars
CPC:
Modifying the physical properties of iron or steel by deformation (apparatus for mechanical working of metal B21, B23, B24) > by cold working > of the whole cross-section, e.g. of concrete reinforcing bars
Of 2 combined children, 1 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
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