Weld Neck Flange
Welding Neck Flanges are easy to recognize at the long tapered hub, that goes gradually over to the wall thickness from a pipe or fitting. Weld neck flange also called WN flange.
Specification:
| ASME B16.47 – 2006 CLASS 150 SERIES A | ||||||||||
| CLASS 150 Series.A | FLANGE THICKNESS | LTB | DRILLING DATA | NOMINAL PIPE SIZE | ||||||
| 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 BOLTS HOLES | |||
| MM | INCH | OD | T | T1 | L1 | PCD | H | # | MM | INCH |
| 650 | 26 | 870 | 66.7 | 66.7 | 119 | 806.4 | 35 | 24 | 650 | 26 |
| 700 | 28 | 925 | 69.9 | 69.9 | 124 | 863.6 | 35 | 28 | 700 | 28 |
| 750 | 30 | 985 | 73.1 | 73.1 | 135 | 914.4 | 35 | 28 | 750 | 30 |
| 800 | 32 | 1060 | 79.4 | 79.4 | 143 | 977.9 | 41 | 28 | 800 | 32 |
| 850 | 34 | 1110 | 81 | 81 | 148 | 1028.7 | 41 | 32 | 850 | 34 |
| 900 | 36 | 1170 | 88.9 | 88.9 | 156 | 1085.8 | 41 | 32 | 900 | 36 |
| 950 | 38 | 1240 | 85.8 | 85.8 | 156 | 1149.4 | 41 | 32 | 950 | 38 |
| 1000 | 40 | 1290 | 88.9 | 88.9 | 162 | 1200.2 | 41 | 36 | 1000 | 40 |
| 1050 | 42 | 1345 | 95.3 | 95.3 | 170 | 1257.3 | 41 | 36 | 1050 | 42 |
| 1100 | 44 | 1405 | 100.1 | 100.1 | 176 | 1314.4 | 41 | 40 | 1100 | 44 |
| 1150 | 46 | 1455 | 101.6 | 101.6 | 184 | 1365.2 | 41 | 40 | 1150 | 46 |
| 1200 | 48 | 1510 | 106.4 | 106.4 | 191 | 1422.4 | 41 | 44 | 1200 | 48 |
| 1250 | 50 | 1570 | 109.6 | 109.6 | 202 | 1479.6 | 48 | 44 | 1250 | 50 |
| 1300 | 52 | 1625 | 114.3 | 114.3 | 208 | 1536.7 | 48 | 44 | 1300 | 52 |
| 1350 | 54 | 1685 | 119.1 | 119.1 | 214 | 1593.8 | 48 | 44 | 1350 | 54 |
| 1400 | 56 | 1745 | 122.3 | 122.3 | 227 | 1651 | 48 | 48 | 1400 | 56 |
| 1450 | 58 | 1805 | 127 | 127 | 233 | 1708.2 | 48 | 48 | 1450 | 58 |
| 1500 | 60 | 1855 | 130.2 | 130.2 | 238 | 1759 | 48 | 52 | 1500 | 60 |
Flanges Catalog
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