The method 1, wherein attaching {TAIL ~ the truncated cone} to the pipe further comprising inserting the truncated cone into {HEAD ~ the pipe} 
The method 1 , wherein attaching { TAIL ~ the truncated cone } to the pipe further comprising inserting the truncated cone into { HEAD ~ the pipe }
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD