... 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) Size range:1 ... 316/316L,WP321,WP347,WPS31254)4) Standard: DIN,ANSI,JIS,BS,ISO,GOST,HG,GB,SH ... ,etc 7) Pressure class:ANSI 150LBS~2500LBS DIN PN6~PN160 HG PN0.25~PN25 PN2.0~ ...