A method of forming {TAIL ~ a pipe} or tube connecting {HEAD ~ section} 1, comprising the additional step of pressing the form between complementary male and female dies to form the two channels 
A method of forming { TAIL ~ a pipe } or tube connecting { HEAD ~ section } 1 , comprising the additional step of pressing the form between complementary male and female dies to form the two channels
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH