Reference Radiographs are nondestructive testing standards universally accepted because of their high reliability in accept-reject actions.
These reference radiographs illustrate various types and degrees of discontinuities occurring in steel castings that have section thicknesses up to 2 in. ( 51 mm).
The illustrations consist of the following:
RRE044603 (Volume III): 2-MV to 4-MV X Rays and Cobalt-60 Reference Radiographs Set of 34 illustrations ( 5 by 7 in.) in a 15 by 17-in. ring binder.
Adjunct to E446 Volume III -- Reference Radiographs for Steel Castings Up to 2 in. (51 mm) in Thickness