A process for {HEAD ~ the manufacture} of {TAIL ~ pipes}, comprising extruding an ethylene polymer composition 1 
A process for { HEAD ~ the manufacture } of { TAIL ~ pipes } , comprising extruding an ethylene polymer composition 1
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH