SM125TT is a Carbon steel OCTG material that provides best-in-class and guaranteed Collapse resistance compared to API ratings. In addition SM125TT production order is delivered with a Collapse proof test.

API Collapse rating is an empirical guideline derived from Collapse testing results, on a statistical scale and conservatively using a worst case scenario approach. Actual Collapse resistance of OCTG seamless pipe is affected by a large number of parameters. SMI has developed an unrivaled know-how in mastering the most influential parameters, and interlocking with best-in-class quality control, tighter than API 5CT/ISO 11960.