DIFF Subgroup
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
Introduced: September 1968
Full Title
Extruding metal; Impact extrusion > Lubrication of metal being extruded or of dies, or the like, e.g. physical state of lubricant, location where lubricant is applied
No child classifications to compare. This is a leaf node in both IPC and CPC.