Stewart Tubular Products has years of experience cutting premium threads. We have threaded diverse products from 1” tubing nipples through 20” casing crossovers. We thread offset hangers, gas lift mandrels, and other product geometries too numerous to list. We thread all grades and types of materials, from standard API OCTG grades to Inconel and other CRA materials for the most severe applications. Our machinists and inspectors are highly skilled and are trained and qualified on each premium connection that they produce. Our machines and measuring equipment are capable of holding the precise tolerances required for premium threading. For a list of the premium connections that we are qualified to cut, click here.