... 500mm 2) Standard: ASME, ANSI, API, JIS, JPI, DIN, UNI, BS, AS 3) Pressure Vessel Forging, Shaft Forging Slip On Flanges ... ISO9001-2008. Stainless Steel Flanges SpecificationASTM A 240,AI82DimensionANSI B 16.5GradeTP304,304L,304H,316, 3I6L,316H,317,317L, 321, ... .Size1/4" to 48" Alloy Steel Flanges SpecificationASTM A 350DimensionANSIB 16.5GradeLF2,F1,F5,F9,F11,F22RangeSORF, BLRF, SWRF, WNRF, ...