... ANSI B16.5 Stainless Steel 304L,316L ect. Standard Chinese Flange Used in Pipeline,Transport ISO9001-2008. Stainless Steel Flanges ... SpecificationASTM A 105DimensionANSI B 16.5Grade RangeSORF, BLRF, SWRF, WNRF, SCREWED.Class150,300,600,900,1200, 1500,2500.Size1/ ... 350DimensionANSIB 16.5GradeLF2,F1,F5,F9,F11,F22RangeSORF, BLRF, SWRF, WNRF, SCREWED.Class150, 300, 600, 900, 1200, 1500,2500. ...