1) OD: up to 5,500mm 2) Standard: ASME, ANSI, API, JIS, ... , Shaft Forging Slip On Flanges - ANSI B16.5 Stainless Steel 304L,316L ect. Standard Chinese Flange Used ... . Stainless Steel Flanges SpecificationASTM A 240,AI82DimensionANSI B 16.5GradeTP304,304L,304H,316, 3I6L,316H,317,317L, ... " to 48" Alloy Steel Flanges SpecificationASTM A 350DimensionANSIB 16.5GradeLF2,F1,F5,F9,F11,F22RangeSORF, BLRF, SWRF, ...