... , PL, SW, LJ, BL 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 ... , SCREWED.Class150, 300, 600, 900, 1200, 1500,2500.Size1/4" to 48" Stainless Steel WN Flange