... size:1/2"~48" standard:DIN,ANSI,JIS,GB carbon steel flange DIN 2502 1) Production name:flat flange, welding ... 304L,A304WP 316/316L,WP321,WP347,WPS31254)4) Standard: DIN,ANSI,JIS,BS,ISO,GOST,HG,GB,SH,ETC 5 ... ) CE and certification:ISO9001-2000,BV,SGS,LOYID 6) Application ... , nuclear power ,etc 7) Pressure class:ANSI 150LBS~2500LBS DIN PN6~PN160 HG PN0.25~PN25 PN2.0~PN42.08 ...