Class 150 Forged Steel Raised Face Blind Flanges are stronger than cast flanges and are rated for high-pressure or high-temperature applications. Dimensions and Tolerances per ASME B16.5. The material meets ASTM A105 requirements. Bolt pattern per ANSI Class 150. We stock ASME B16.5 flanges in both domestic (AIS) and import options. Our machine shop can also modify ANSI/ASME flanges to meet your project requirements.
Downloads:
| API Part Number | Size | O.D. | I.D. | Ø B.H.C. | Ø B.H. | # B.H. | THK | Ø RF | Weight Lbs |
| RFB0050 | 0.5 | 3.50 | — | 2.38 | 0.630 | 4 | 0.440 | 1.375 | 1.0 |
| RFB0075 | 0.75 | 3.88 | — | 2.75 | 0.630 | 4 | 0.500 | 1.688 | 1.0 |
| RFB0100 | 1 | 4.25 | — | 3.13 | 0.630 | 4 | 0.563 | 2.000 | 2.0 |
| RFB0125 | 1.25 | 4.63 | — | 3.50 | 0.630 | 4 | 0.630 | 2.500 | 2.9 |
| RFB0150 | 1.5 | 5.00 | — | 3.88 | 0.630 | 4 | 0.690 | 2.875 | 3.5 |
| RFB0200 | 2 | 6.00 | — | 4.75 | 0.750 | 4 | 0.750 | 3.625 | 5.0 |
| RFB0250 | 2.5 | 7.00 | — | 5.50 | 0.750 | 4 | 0.880 | 4.125 | 9.0 |
| RFB0300 | 3 | 7.50 | — | 6.00 | 0.750 | 4 | 0.940 | 5.000 | 9.0 |
| RFB0350 | 3.5 | 8.50 | — | 7.00 | 0.750 | 8 | 0.940 | 5.500 | 13.0 |
| RFB0400 | 4 | 9.00 | — | 7.50 | 0.750 | 8 | 0.940 | 6.188 | 17.0 |
| RFB0500 | 5 | 10.00 | — | 8.50 | 0.875 | 8 | 0.940 | 7.313 | 19.7 |
| RFB0600 | 6 | 11.00 | — | 9.50 | 0.875 | 8 | 1.000 | 8.500 | 27.0 |
| RFB0800 | 8 | 13.50 | — | 11.75 | 0.875 | 8 | 1.130 | 10.625 | 43.5 |
| RFB1000 | 10 | 16.00 | — | 14.25 | 1.000 | 12 | 1.190 | 12.750 | 65.5 |
| RFB1200 | 12 | 19.00 | — | 17.00 | 1.000 | 12 | 1.250 | 15.000 | 123.0 |
| RFB1400 | 14 | 21.00 | — | 18.75 | 1.125 | 12 | 1.380 | 16.250 | 133.3 |
| RFB1600 | 16 | 23.50 | — | 21.25 | 1.125 | 16 | 1.440 | 18.500 | 180.0 |
| RFB1800 | 18 | 25.00 | — | 22.75 | 1.250 | 16 | 1.563 | 21.000 | 220.0 |
| RFB2000 | 20 | 27.50 | — | 25.00 | 1.250 | 20 | 1.690 | 23.000 | 284.0 |
| RFB2200 | 22 | 29.50 | — | 27.25 | 1.375 | 20 | 1.840 | 25.250 | 360.0 |
| RFB2400 | 24 | 32.00 | — | 29.50 | 1.375 | 20 | 1.880 | 27.250 | 445.0 |
