Subs and collars are an important part of everyday drilling – quality of the materials used in those subs is even more important.  Whether you need 4145 Steel or Non-Mag, SMS can provide you with precision machined subs and collars made from high quality material.  We stock a variety of sizes from 3 1/2 ” – 9.5” and welcome custom designs.  Sale and rental options available.

All SMS subs are manufactured to API standards.  Material certifications available upon request.

SMS Subs/Collars

  • UBHOs
  • Lift subs
  • Filter Subs
  • Float Subs
  • Crossover Subs
  • Stabilizers
  • Drill Collars
  • Pony Collars