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 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 | 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 |
