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Class 300 Forged Stainless Steel Raised Face Blind Flanges conform to ANSI B16.5 and ASTM A182 standards. This flange type is available in 304L and 316L stainless steel, a material preferred for corrosion resistance.
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| API Part Number | Size | O.D. | I.D. | Ø B.H.C. | Ø B.H. | # B.H. | THK | Ø RF | Weight Lbs |
| SRFB0050-30 | 0.5 | 3.75 | BLIND | 2.63 | 0.750 | 4 | 0.563 | 1.375 | 3.0 |
| SRFB0075-30 | 0.75 | 4.63 | BLIND | 3.25 | 0.750 | 4 | 0.625 | 1.688 | 4.0 |
| SRFB0100-30 | 1 | 4.88 | BLIND | 3.50 | 0.750 | 4 | 0.688 | 2.000 | 5.0 |
| SRFB0125-30 | 1.25 | 5.25 | BLIND | 3.88 | 0.750 | 4 | 0.750 | 2.500 | 5.5 |
| SRFB0150-30 | 1.5 | 6.13 | BLIND | 4.50 | 0.875 | 4 | 0.813 | 2.875 | 6.0 |
| SRFB0200-30 | 2 | 6.50 | BLIND | 5.00 | 0.750 | 8 | 0.875 | 3.625 | 6.5 |
| SRFB0250-30 | 2.5 | 7.50 | BLIND | 5.88 | 0.875 | 8 | 1.000 | 4.125 | 10.0 |
| SRFB0300-30 | 3 | 8.25 | BLIND | 6.63 | 0.875 | 8 | 1.125 | 5.000 | 15.0 |
| SRFB0350-30 | 3.5 | 9.00 | BLIND | 7.25 | 0.875 | 8 | 1.188 | 5.500 | 21.0 |
| SRFB0400-30 | 4 | 10.00 | BLIND | 7.88 | 0.875 | 8 | 1.250 | 6.188 | 27.0 |
| SRFB0500-30 | 5 | 11.00 | BLIND | 9.25 | 0.875 | 8 | 1.375 | 7.313 | 39.0 |
| SRFB0600-30 | 6 | 12.50 | BLIND | 10.63 | 0.875 | 12 | 1.438 | 8.500 | 48.0 |
| SRFB0800-30 | 8 | 15.00 | BLIND | 13.00 | 1.000 | 12 | 1.625 | 10.625 | 75.0 |
| SRFB1000-30 | 10 | 17.50 | BLIND | 15.25 | 1.125 | 16 | 1.875 | 12.750 | 122.0 |
| SRFB1200-30 | 12 | 20.50 | BLIND | 17.75 | 1.250 | 16 | 2.000 | 15.000 | 180.0 |
| SRFB1400-30 | 14 | 23.00 | BLIND | 20.25 | 1.250 | 20 | 2.125 | 16.250 | 241.0 |
| SRFB1600-30 | 16 | 25.50 | BLIND | 22.50 | 1.375 | 20 | 2.250 | 18.500 | 312.0 |
| SRFB1800-30 | 18 | 28.00 | BLIND | 24.75 | 1.375 | 24 | 2.375 | 21.000 | 398.0 |
| SRFB2000-30 | 20 | 30.50 | BLIND | 27.00 | 1.375 | 24 | 2.500 | 23.000 | 500.0 |
| SRFB2400-30 | 24 | 36.00 | BLIND | 32.00 | 1.625 | 24 | 2.750 | 27.250 | 760.0 |
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