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This Standard specifies the general requirements for the radiography of
steel castings by means of X rays or gamma rays in accordance with procedures given
in JIS G 0581 and JIS Z 2306.
Remarks : The International Standard corresponding to this Standard is as follows.
In addition, symbols which denote the degree of correspondence in
the contents between the relevant International Standard and JIS
are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/IEC Guide 21.
IS0 4993 : 1987 Steel castings-Radiographic inspection (MOD)