Making uncoated products

Introduced: September 1968

Full Title

Extruding metal; Impact extrusion > Making uncoated products

IPC and CPC are identically structured here. All 4 subcodes exist in both systems.

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B21C 23/03 by both direct and backward extrusion +1 CPC IPC+CPC Available in IPC and CPC
B21C 23/04 by direct extrusion IPC+CPC Available in IPC and CPC
B21C 23/18 by impact extrusion +2 CPC IPC+CPC Available in IPC and CPC
B21C 23/20 by backward extrusion +1 CPC IPC+CPC Available in IPC and CPC