[MW:27390] Is recommended for conducting PAUT in lower tickness tube

Dear Experts,

Could you please advise, whether PAUT is recommended lower thickness (Dia 2inch X 4 to 5.5 mm thick).

As i knew that below 6mm not recommended for the PAUT according to ASME Case 2816.  

 

Thanks & Regards, 

K.GANESAN