... and non standard flange Certification: ISO 9002 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#,316L and ... , electric power, high pressure vessel, shipping industry and so on6) Surface treatment: transparent oil, rust ...