14/05/2016 Other Services
Drill Stem Crossover Subs are short subassemblies used for connecting drill stem components of different thread types or sizes during drilling applications.
PPSL Drill Stem Subs are manufactured from alloy steel AISI 4145H Modified in various OD configurations in full conformity with API 7-1 specifications and requirements.
All connections are machined to API specifications and the thread roots are phosphated in order to minimize galling of threads during the initial make-up.
The MH502 series of rock drills are the first choice for multiple kinds of drilling operations. With the largest in-class piston diameter and its supe...