... wn flange wn flange carbon steel flange stainless steel flange ANSI,ASME,API5L, ... 2-48 inch(DN15-DN2000) 4) Material: Carbon steel :A105,SS400,SF440 RST37.2,S235JRG2,P250GH,C22 ... or Case wn flange wn flange carbon steel flange stainless steel flange ANSI,ASME,API5L,DIN,JIS ... StandardANSI,ASME,API5L,DIN,JIS Materialcarbon steel stainless steel Purposeconstruction petroleum chemical shipbuilding gas,etc ...