American Flange Standards
| CL 300 Series.B | FLANGE THICKNESS | LTB | DRILLING DATA | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| NOMINAL PIPE SIZE | FLANGE OUTSIDE DIAMETER | THICKNESS OF W/N MIN | THICKNESS OF BLIND MIN | WELD NECK LENGTH | PITCH CIRCLE DIAMETER | BOLT HOLE DIAMETER | NUMBER OF BOLT HOLES | NOMINAL PIPE SIZE | ||
| MM | INCH | OD | T | T1 | L1 | PCD | H | # | MM | INCH |
| 650 | 26 | 865 | 87.4 | 87.4 | 168 | 803.3 | 35 | 32 | 650 | 26 |
| 700 | 28 | 920 | 87.4 | 87.4 | 148 | 857.2 | 35 | 36 | 700 | 28 |
| 750 | 30 | 990 | 92.1 | 92.1 | 156 | 920.75 | 38 | 36 | 750 | 30 |
| 800 | 32 | 1055 | 101.6 | 101.6 | 167 | 977.9 | 41 | 32 | 800 | 32 |
| 850 | 34 | 1110 | 101.6 | 101.6 | 171 | 1031.9 | 41 | 36 | 850 | 34 |
| 900 | 36 | 1170 | 101.6 | 101.6 | 179 | 1089 | 45 | 32 | 900 | 36 |
| 950 | 38 | 1220 | 109.6 | 109.6 | 191 | 1139.8 | 45 | 36 | 950 | 38 |
| 1000 | 40 | 1275 | 114.3 | 114.3 | 197 | 1190.6 | 45 | 40 | 1000 | 40 |
| 1050 | 42 | 1335 | 117.5 | 117.5 | 203 | 1244.6 | 48 | 36 | 1050 | 42 |
| 1100 | 44 | 1385 | 125.5 | 125.5 | 213 | 1295.4 | 48 | 40 | 1100 | 44 |
| 1150 | 46 | 1460 | 127 | 128.6 | 221 | 1365.2 | 51 | 36 | 1150 | 46 |
| 1200 | 48 | 1510 | 127 | 133.4 | 222 | 1416 | 51 | 40 | 1200 | 48 |
| 1250 | 50 | 1560 | 136.6 | 138.2 | 233 | 1466.8 | 51 | 44 | 1250 | 50 |
| 1300 | 52 | 1615 | 141.3 | 142.6 | 241 | 1517.6 | 51 | 48 | 1300 | 52 |
| 1350 | 54 | 1675 | 135 | 147.7 | 238 | 1578 | 51 | 48 | 1350 | 54 |
| 1400 | 56 | 1765 | 152.4 | 155.4 | 267 | 1651 | 60 | 36 | 1400 | 56 |
| 1450 | 58 | 1825 | 152.4 | 160.4 | 273 | 1712.9 | 60 | 40 | 1450 | 58 |
| 1500 | 60 | 1880 | 149.3 | 165.1 | 270 | 1763.7 | 60 | 40 | 1500 | 60 |
