... :1/2"~60" 2.standard:ASME,DIN,ANSI,JIS,GB 3.material:Carbon steel,A105,Q235B,Q345B, asme carbon steel flange Typesplete, slip ... ,Q235B,Q345B,processForged or CastingStandardASME B16.9,DIN17175,DIN1626,JIS,ANSI B16.5, GB TechniqueForged or Casting Surface treatmenttransparent oil, rust ... as customer's requirment PortTianjin seaport,China.Special design available asme carbon steel flange