Threaded connection for pipes and method of fabricating same

摘要

The method of fabricating threaded pipe joints to eliminate variations in tensile strength produced by tolerance variations in the wall thickness of a pipe. Such tolerance variations are eliminated by cold forming and then machining the entire lengths of both the pin and box ends of the threaded pipe joint. A precise mathematical relationship between the root diameter of the threaded and the wall thicknesses of the pin and box portions of the pipe eliminates the creation of critical areas having reduced tensile strength.