... -Type Design StandardGB/T12237,API6D,ASME B16.34Face To FaceGB/T12221,API6D,ASME B16.10FlangeHG,GB,JB,API,ANSI,ISO,BS,DIN,NF ... ,API 607Inspection And TestJB/T9092,GB/T13927,API6D,API598√ Technical 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 ...