Extruding metal; Impact extrusion

Introduced: September 1968

CPC subdivides this area 2x more granularly than IPC with 6 additional codes.

6 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

Navigate with arrow keys, Enter to open

B21C 23/001 CPC only CPC only
B21C 23/002 CPC only CPC only
B21C 23/004 CPC only CPC only
B21C 23/005 CPC only CPC only
B21C 23/007 +1 CPC CPC only CPC only
B21C 23/009 CPC only CPC only
B21C 23/01 starting from material of particular form or shape, e.g. mechanically pre-treated (B21C23/22 takes precedence) IPC+CPC Available in IPC and CPC
B21C 23/02 Making uncoated products IPC+CPC Available in IPC and CPC
B21C 23/21 Presses specially adapted for extruding metal +4 CPC IPC+CPC Available in IPC and CPC
B21C 23/22 Making metal-coated products; Making products from two or more metals IPC+CPC Available in IPC and CPC
B21C 23/32 Lubrication of metal being extruded or of dies, or the like, e.g. physical state of lubricant, location where lubricant is applied IPC+CPC Available in IPC and CPC