... carbon steel, 2.size:1/2"-24" 3.Standard:ANSI,DIN,EN1092-1 DIN flanges NameDIN flanges Range½” (15 NB) to 64” ... cast iron ,brass , aluminum standardANSI : ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48DIN : DIN2527, DIN2566, DIN2573, ... DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632 ...