material: stainless steel,carbon steel ,alloy steel flange and dual phase steel Standard: JIS,ANSI,UNI,DIN,NF,ASME,API,JPI,AWW Features ... : 1) Stainless steel flange and carbon steel flange 2) Standard: ASME, ANSI, API, JIS, JPI, DIN, UNI, BS, AS ... 3) Material: 316L, 316Ti, 304L, 321, 321H, Rst37.2 ...