Quick connection of subsea drilling rod, pipe and casing

摘要

NOTA.SE DECLARES FOR THE PURPOSES OF ART.5, THE SYSTEM AND DEVICE FORMING A single object INSEPARABLE.3 (57) SYSTEM AND DEVICE FOR QUICK CONNECTION RODS, TUBES AND timbering, ESPECIALLY FOR DRILLING A MARINAS.CONSTA male part (2) and a female part (1) with a plurality of gROOVED HELICAL (3, 4, 5, 6), each CREST radially offset, relative to adjacent gROOVED.