... 34Face To FaceGB/T12221,API6D,ASME B16.10FlangeHG,GB,JB,API,ANSI,ISO,BS,DIN,NF, ... SpecificationDesign Standard: ASME B16.34, GB/T12237 Face-to-face Dimension: ASME B16.10, GB/T12221, API6D, etc.Adapting ... Flange: HG,GB,JB,API,ANSI,ISO,BS ... ,DIN,NF,JISTest Standard: JB/T9092,GB/T13927,API6D,API598, etc. √ Main materialValve Body: ...