1) Stainless steel flange and carbon steel flange 2) Standard: ASME, ANSI, API, JIS, JPI, DIN, UNI, BS, AS 3) Material: 316L, .1) Stainless steel flange and carbon steel flange2 ... ) Standard: ASME, ANSI, API, JIS, JPI, DIN, UNI, BS, AS 3) Material: 316L, 316Ti, 304L ...