Our Class 150 Steel Flat Face Blind Flanges are fully machined from domestic (AIS) or import ASTM A36 or A105 steel and their dimensions and tolerances meet ANSI/ASME B16.5 specifications. Their bolt pattern is per ANSI/ASME Class 150 and are painted black for corrosion resistance. Our machine shop can also modify ANSI/ASME flanges to meet your project requirements.
Please contact us for a quote.
Downloads:
| API Part Number | Size | O.D. | I.D. | Ø B.H.C. | Ø B.H. | # B.H. | THK 1 | Weight Lbs |
| FFBL0050 | 0.5 | 3.50 | BLIND | 2.38 | 0.630 | 4 | 0.440 | 1.0 |
| FFBL0075 | 0.75 | 3.88 | BLIND | 2.75 | 0.630 | 4 | 0.500 | 1.0 |
| FFBL0100 | 1 | 4.25 | BLIND | 3.13 | 0.630 | 4 | 0.563 | 2.0 |
| FFBL0125 | 1.25 | 4.63 | BLIND | 3.50 | 0.630 | 4 | 0.630 | 2.9 |
| FFBL0150 | 1.5 | 5.00 | BLIND | 3.88 | 0.630 | 4 | 0.690 | 3.5 |
| FFBL0200 | 2 | 6.00 | BLIND | 4.75 | 0.750 | 4 | 0.750 | 5.0 |
| FFBL0250 | 2.5 | 7.00 | BLIND | 5.50 | 0.750 | 4 | 0.880 | 9.0 |
| FFBL0300 | 3 | 7.50 | BLIND | 6.00 | 0.750 | 4 | 0.940 | 9.0 |
| FFBL0350 | 3.5 | 8.50 | BLIND | 7.00 | 0.750 | 8 | 0.940 | 13.0 |
| FFBL0400 | 4 | 9.00 | BLIND | 7.50 | 0.750 | 8 | 0.940 | 17.0 |
| FFBL0500 | 5 | 10.00 | BLIND | 8.50 | 0.875 | 8 | 0.940 | 19.7 |
| FFBL0600 | 6 | 11.00 | BLIND | 9.50 | 0.875 | 8 | 1.000 | 27.0 |
| FFBL0800 | 8 | 13.50 | BLIND | 11.75 | 0.875 | 8 | 1.130 | 43.5 |
| FFBL1000 | 10 | 16.00 | BLIND | 14.25 | 1.000 | 12 | 1.190 | 65.5 |
| FFBL1200 | 12 | 19.00 | BLIND | 17.00 | 1.000 | 12 | 1.250 | 123.0 |
| FFBL1400 | 14 | 21.00 | BLIND | 18.75 | 1.125 | 12 | 1.380 | 133.3 |
| FFBL1600 | 16 | 23.50 | BLIND | 21.25 | 1.125 | 16 | 1.440 | 180.0 |
| FFBL1800 | 18 | 25.00 | BLIND | 22.75 | 1.250 | 16 | 1.563 | 220.0 |
| FFBL2000 | 20 | 27.50 | BLIND | 25.00 | 1.250 | 20 | 1.690 | 284.0 |
| FFBL2200 | 22 | 29.50 | BLIND | 27.25 | 1.375 | 20 | 1.840 | 360.0 |
| FFBL2400 | 24 | 32.00 | BLIND | 29.50 | 1.375 | 20 | 1.880 | 445.0 |
