Referring to the drawings, wherein like reference characters designate corresponding parts throughout the several figures, and particularly to FIGS 1A and 1B, there is shown {HEAD ~ an oil field drill pipe}, indicated by the reference character 10, comprising an elongated hollow tubular pipe portion 11 having {TAIL ~ a male coupling} end 12 and a female coupling end 13 
Referring to the drawings , wherein like reference characters designate corresponding parts throughout the several figures , and particularly to FIGS 1A and 1B , there is shown { HEAD ~ an oil field drill pipe } , indicated by the reference character 10 , comprising an elongated hollow tubular pipe portion 11 having { TAIL ~ a male coupling } end 12 and a female coupling end 13
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