Standard: ASME, ANSI, API, JIS, JPI, DIN, UNI, BS, AS Material: Q235 A105 37.-2 316 304 316L 1) Stainless steel flange and carbon steel flange 2) Standard: ASME, ANSI, API, JIS, JPI, DIN, UNI, BS, AS 3) Material: Q235 A105 37.-2 316 304 316L 4) Size: 1/2" - 24" 15-600 5) Production with anneal solution for stainless performance 6) Special design available