Our company can provide standard and unstandard carbon steel or stainless steel flange according to customer needs . carbon steel flange Material:carbon steel,stainless steel size:1/2"-24" Standard:ANSI,DIN,EN1092-1carbon steel flange 1), Sizes: from DN10 to DN30002), Material: carbon steel, stainless steel and alloy steel;3), Standard: ANSI, DIN, EN1092-1, NFE, AS, JIS and customers' drawings ...