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E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
Conduite flexible non liee destinee a la realisation de flexible dynamique de transport de fluide sous pression, et notamment flexible d’injection de boue pour forage petrolier rotatif