Taper Tap
Thetapertapisaspecialfishingtoolmakingthreadintubedroppedobjectsuchasdrillpipeandoiltube.Thetapsareturnedfromhightrengthalloysteelforgingmaterialsandheattreated.Itismadewithchipgroovesoastomakethreads.Theboxtapisaspecialexternalfishingtoolwhichisengagedontheoutsidewalloftubingobjectssuchasoiltubinganddrillpipe.
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dril-collar |
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Spiral drill collar |
Spiral Drill Collar is used to reduce contact area with hole so as to avoid efficiently bit sticking from differential pressure. spiral drill colla... |
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