... 1.materials:201,301,304,316,etc 2.ASME, ANSI, API, JIS, JPI, DIN, UNI, BS, ... Description1) Stainless steel flange and carbon steel flange 2) Standard: ASME, ANSI, API, JIS, JPI, DIN, UNI, BS, AS ... 1) Stainless steel flange and carbon steel flange 2) Standard: ASME, ANSI, API, JIS, JPI, DIN, UNI, BS, AS ... performance 6) Special design availablePictures shows: ansi standard stainless steel flanges