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PCE
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DIFF Subgroup
C21D 9/08

for tubular bodies or pipes

Introduced: September 1968

Full Title

Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor > for tubular bodies or pipes

Of 4 combined children, 3 exist in both systems.

1 codes are CPC-only extensions.

Child Classifications

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  • C21D 9/085 CPC only CPC only
  • C21D 9/10 shotgun barrels IPC+CPC Available in IPC and CPC
  • C21D 9/12 barrels for ordnance IPC+CPC Available in IPC and CPC
  • C21D 9/14 wear-resistant or pressure-resistant pipes IPC+CPC Available in IPC and CPC