... ,304H,316, 3I6L,316H,317,317L, 321, 347RangeSORF, BLRF, SWRF, WNRF,SCREWED.Class150,300,600, 900, 1200, 1500,2500.Size1/4 ... Flanges SpecificationASTM A 105DimensionANSI B 16.5Grade RangeSORF, BLRF, SWRF, WNRF, SCREWED.Class150,300,600,900,1200, 1500,2500.Size1/4 ... 350DimensionANSIB 16.5GradeLF2,F1,F5,F9,F11,F22RangeSORF, BLRF, SWRF, WNRF, SCREWED.Class150, 300, 600, 900, 1200, 1500,2500.Size1/4 ...