1) OD: up to 5,500mm 2) Standard: ASME, ANSI, API, JIS, JPI, DIN, UNI, BS, AS 3) Pressure Vessel Forging, Shaft Forging Slip On Flanges - ANSI B16.5 Stainless Steel 304L,316L ect. Standard Chinese Flange Used in Pipeline,Transport ISO9001-2008. Stainless Steel Flanges SpecificationASTM A 240,AI82DimensionANSI B 16.5GradeTP304,304L,304H,316, 3I6L,316H,317,317L, 321, 347RangeSORF, BLRF, SWRF, WNRF, ...