SA 515 Gr 65 Elliptic dished end with antirust treatment: 1.standard:GB/T 25198-2010, ASME VIII 2.diameter . ... -12000mm SA 515 Gr 65 Elliptic dished end with antirust treatment: 1.diameter:217-12000mm2.thickness:3-150mm3.straight flange:40 ... , groove outside , and both inside and out side)7.appearance treatment: sandy -blasting, acid pickling, antirust treament.....8.nondestructive testing: Untrosonic ...