stainless steel forged flange standard:

1)material: carbon steel (A105,RST37-2/S235JRG2, C22.8/P250GH, S355J2G3/ST52-3, SS400/SF440A ....) and stainless steel(304,304L,316,316L...)
2) Standard : DIN, ANSI , JIS , AS2129,API,BS4504,GOST
3)TYPE: SLIP ON , WELDING NECK ,PLATE, BLIND, RING/COLLAR, THREAD, SW AND SO ON