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NC50 Connection Specifications by Eduard Gadzhiev is a document available to read on EtoBox.

What is NC50 Connection Specifications about?

This document provides specifications for an oil drilling thread connection, including dimensions for drill collar and drill pipe outer diameters (OD) and box depths (BD), notes on the API thread form and taper tolerance, and that the connection is equivalent to a 4-1/2 inch connection with a pitch diameter of 5.042 at the gage point and an optional pin relief groove.

Author

Eduard Gadzhiev

Language

EN