... carbon steel flange DIN 2502 size:1/2"~48" standard:DIN,ANSI,JIS,GB carbon steel flange DIN 2502 1) Production name:flat flange, welding ... neck flange, slip-on flange, socket welding flange, blind flange.2 ... 316/316L,WP321,WP347,WPS31254)4) Standard: DIN,ANSI,JIS,BS,ISO,GOST,HG,GB,SH,ETC 5) CE and ...