... in Pipeline,Transport ISO9001-2008. Stainless Steel Flanges SpecificationASTM A 240,AI82DimensionANSI B 16.5GradeTP304,304L,304H,316, 3I6L, ... 1500,2500.Size1/4" to 48" Carbon Steel Flanges SpecificationASTM A 105DimensionANSI B 16.5Grade RangeSORF, BLRF, SWRF, WNRF, SCREWED. ... ,2500.Size1/4" to 48" Alloy Steel Flanges SpecificationASTM A 350DimensionANSIB 16.5GradeLF2,F1,F5,F9,F11,F22RangeSORF, BLRF, ...