... steel pipe flange 1 Stainless steel flange and carbon steel flange 2 Standard: ASME, ANSI, API, JIS, JPI, DIN, UNI, stainless steel pipe flange Features: ... 1) Stainless steel flange and carbon steel flange2) Standard: ASME, ANSI, API ... stainless performance6) Special design availableOuter packing:Seaworthy plywood case pipe flange