OVERVIEW
The ASTM E 1444-01 Ketos Ring is used to check the availability of subsurface defects and the efficiency of the procedure. Ketos Ring is a 22 mm thick ring with 12 holes (Ø 1.75 mm) drilled at different distances from the surface.
It provides ASTM 3709-08, ASTM E1444/E1444M-12, SAE AS5282 norms.
