Standard, customized stainless steel or carbon steel flanges provided. Features:1) Stainless steel flange and alloy steel flange2) Standard: ASME, ANSI, API, JIS, JPI, DIN, UNI, BS, AS3) Material: 316L, 316Ti, 304L, 321, 321H, Rst37.2, C22.84) Production with anneal solution for stainless performance6) Special design availableOuter packing:Seaworthy plywood case Quality SS Flanges