{HEAD ~ The metal forming process} may include radial forging, {TAIL ~ rotary swaging}, pilgering and flowforming 
include
{ HEAD ~ The metal forming process } may include radial forging , { TAIL ~ rotary swaging } , pilgering and flowforming
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH