... and TS16949 We provide welded neck flange, slip on neck flange and blind flange1) stainless steel flange and carbon steel flange2) standard: ANSI,JIS,DIN ... ,GB,BS, ASME3) size 1/2 --604) material: Q235, Q345series, 20 ... and so on6) Surface treatment: transparent oil, rust proof oil, or hot galvanizing. flange parts