The flanges may be made from forgings, castings, or plates covering various types and classes of ASME B16.5 and ASME B16.47 (both Series A and Series B). Stainless Steel 304 \ / 304L Flanges of Asme B16.5 dia misy ao an-dakilasy 150, 300, 400, 600, 900, 1500, 2500.