Carbon steel forged flange carbon steel flange with high quality and resonable price size:DN15-DN600 certificate:ISO900 Specificationscarbon steel flange with high quality and resonable price size:DN15-DN600 certificate:ISO9002 and PED standard:ANSI DIN JISTypeflangeMaterial:CarbonSteelA234,ST35.8,ST37 A105, A106B, alloy steelStandard:ASME,ASTM,ANSI,DIN,GB,B16.9,JISNominalDiameterDN15~ ...