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:
RRE044601 (Volume I): Medium Voltage (Nominal 250 kVp) X-Ray Reference Radiographs - Set of 34 illustrations ( 5 by 7 in.) in a 15 by 17-in. ring binder.
Adjunct to E446 Volume I -- Reference Radiographs for Steel Castings Up to 2 in. (51 mm) in Thickness