This is just out of curiosity, in Section IIA, specification for SA-193/SA-193M para. 10.2.2 for grade B7M requires 100% testing the hardness of each stud or bolt. My question is this: If 100% testing is mandatory, why it is also a supplementary requirement?
(This requirement is repeated under the Supplementary Requirements - S3. 100% Hardness Testing of Grade B7M)
(This requirement is repeated under the Supplementary Requirements - S3. 100% Hardness Testing of Grade B7M)
