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