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ANSI / ASME CLASS 400 LONG WELD NECK FLANGE DIMENSIONS

Class 400 Long Weld Neck Flanges | #400 Sch 40 Long Weld Neck Flange | B16.5 #400 Long Weld Neck Flange | ANSI 400 Long Weld Neck Flange | ASME 400 Long Weld Neck Flange | #400 Long Weld Neck Dimensions | B16.5 Long Weld Neck Flange Thickness | 400 Long Weld Neck flange schedule chart | B16.5 Class 400 Long Weld Neck Flange

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long weld neck flange dimensions

Class 400 Long Weld Neck Flange Dimensions as per ASME B16.5

Size in Inch Size in mm Outer Dia. Flange Thick. Hub OD Weld Neck OD RF Dia. RF Height PCD Hub Length No of Bolts Bolt Size UNC RF Stud Length Hole Size ISO Stud Size
A B C D E F G H
1/2 15 95 14.3 38 21.3 34.9 7 66.7 As Required 4 1/2 75 5/8 M14
3/4 20 115 15.9 48 26.7 42.9 7 82.6 As Required 4 5/8 90 3/4 M16
1 25 125 17.5 54 33.4 50.8 7 88.9 As Required 4 5/8 90 3/4 M16
1 1/4 32 135 20.7 64 42.2 63.5 7 98.4 As Required 4 5/8 95 3/4 M16
1 1/2 40 155 22.3 70 48.3 73 7 114.3 As Required 4 3/4 110 7/8 M20
2 50 165 25.4 84 60.3 92.1 7 127 As Required 8 5/8 110 3/4 M16
2 1/2 65 190 28.6 100 73 104.8 7 149.2 As Required 8 3/4 120 7/8 M20
3 80 210 31.8 117 88.9 127 7 168.3 As Required 8 3/4 125 7/8 M20
3 1/2 90 230 35 133 101.6 N/A 7 184.2 As Required 8 7/8 140 1 M24
4 100 255 35 146 114.3 157.2 7 200 As Required 8 7/8 140 1 M24
5 125 280 38.1 178 141.3 185.7 7 235 As Required 8 7/8 145 1 M24
6 150 320 41.3 206 168.3 215.9 7 269.9 As Required 12 7/8 150 1 M24
8 200 380 47.7 260 219.1 269.9 7 330 As Required 12 1 170 1 1/8 M27
10 250 445 54 321 273 323.8 7 387.4 As Required 16 1 1/8 190 1 1/4 M30
12 300 520 57.2 375 323.8 381 7 450.8 As Required 16 1 1/4 205 1 3/8 M33
14 350 585 60.4 425 355.6 412.8 7 514.4 As Required 20 1 1/4 210 1 3/8 M33
16 400 650 63.5 483 406.4 469.9 7 571.5 As Required 20 1 3/8 220 1 1/2 M36
18 450 710 66.7 533 457 533.4 7 628.6 As Required 24 1 3/8 230 1 1/2 M36
20 500 775 69.9 587 508 584.2 7 685.8 As Required 24 1 1/2 240 1 3/4 M39
24 600 915 76.2 702 610 692.2 7 812.8 As Required 24 1 3/4 265 1 7/8 M45