Duplex steel forgings customized as per drawing, A 182 F53 super duplex steel flange forgings, NB/T 47010 S25073 pressure vessel forgings

The Chinese brand of Super Duplex steel 2507 is 022Cr25Ni7Mo4N, which is a better duplex steel material than 2205. The forgings are filter base flanges requiring surfacing alloy 33 with a thickness of 4mm.