... , DIN,JIS, BS 2.carbon/stainless/alloy/Aluminum steel Description of Flange: Production Name forged welding neck flanges,St37,DIN,DN ... :50-600 mm,rated pressure:10 bar Size1/4''-48'',DN8-DN1200WTSCH5S-XXSStandardANSI B16.9, ANSI B16 ... flanges,St37,DIN,DN:50-600 mm,rated pressure:10 bar