flat dish head as per ASME VIII div-1 with dimesion of ID from 500-15000 minimum thickness after forming:6-250 SA516Gr70,St37 flat dish head as per ASME VIII div-1with dimesion of ID from 500-15000minimum thickness after forming:6-250steel Grade: SA516Gr70, st37,st52, ss304,ss316L,etcforming method: pressing or spinning as perdimension flat dish head