Our Class 300 Steel Flat Face Blind Flanges are fully machined from domestic (AIS) or import ASTM A36 or A105 steel and their dimensions and tolerances meet 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 | Weight Lbs |
| FFBL0050-30 | 0.5 | 3.75 | BLIND | 2.63 | 0.750 | 4 | 0.563 | 1.4 |
| FFBL0075-30 | 0.75 | 4.63 | BLIND | 3.25 | 0.750 | 4 | 0.625 | 2.5 |
| FFBL0100-30 | 1 | 4.88 | BLIND | 3.50 | 0.750 | 4 | 0.688 | 3.0 |
| FFBL0125-30 | 1.25 | 5.25 | BLIND | 3.88 | 0.750 | 4 | 0.750 | 4.0 |
| FFBL0150-30 | 1.5 | 6.13 | BLIND | 4.50 | 0.875 | 4 | 0.813 | 6.0 |
| FFBL0200-30 | 2 | 6.50 | BLIND | 5.00 | 0.750 | 8 | 0.875 | 8.0 |
| FFBL0250-30 | 2.5 | 7.50 | BLIND | 5.88 | 0.875 | 8 | 1.000 | 11.0 |
| FFBL0300-30 | 3 | 8.25 | BLIND | 6.63 | 0.875 | 8 | 1.125 | 15.0 |
| FFBL0350-30 | 3.5 | 9.00 | BLIND | 7.25 | 0.875 | 8 | 1.188 | 20.0 |
| FFBL0400-30 | 4 | 10.00 | BLIND | 7.88 | 0.875 | 8 | 1.250 | 25.0 |
| FFBL0500-30 | 5 | 11.00 | BLIND | 9.25 | 0.875 | 8 | 1.375 | 35.0 |
| FFBL0600-30 | 6 | 12.50 | BLIND | 10.63 | 0.875 | 12 | 1.438 | 46.0 |
| FFBL0800-30 | 8 | 15.00 | BLIND | 13.00 | 1.000 | 12 | 1.625 | 75.0 |
| FFBL1000-30 | 10 | 17.50 | BLIND | 15.25 | 1.125 | 16 | 1.875 | 124.0 |
| FFBL1200-30 | 12 | 20.50 | BLIND | 17.75 | 1.250 | 16 | 2.000 | 174.0 |
| FFBL1400-30 | 14 | 23.00 | BLIND | 20.25 | 1.250 | 20 | 2.125 | 246.0 |
| FFBL1600-30 | 16 | 25.50 | BLIND | 22.50 | 1.375 | 20 | 2.250 | 315.0 |
| FFBL1800-30 | 18 | 28.00 | BLIND | 24.75 | 1.375 | 24 | 2.375 | 427.0 |
| FFBL2000-30 | 20 | 30.50 | BLIND | 27.00 | 1.375 | 24 | 2.500 | 515.0 |
| FFBL2400-30 | 24 | 36.00 | BLIND | 32.00 | 1.625 | 24 | 2.750 | 800.0 |
