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ANSI / ASME CLASS 600 WELD NECK FLANGE DIMENSIONS

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weld neck flange dimensions

Class 600 Weld Neck Flange Dimensions as per ASME B16.5

Size in Inch Size in mm Outer Diameter Flange Thickness Hub OD Weld Neck OD Welding Neck Length Bore RF Diameter RF Height PCD Weld Face
A B C D E F G H I J
1/2 15 95 14.3 38 21.3 52 According to Schedule 34.9 7 66.7 1.6
3/4 20 115 15.9 48 26.7 57 42.9 7 82.6 1.6
1 25 125 17.5 54 33.4 62 50.8 7 88.9 1.6
1 1/4 32 135 20.7 64 42.2 67 63.5 7 98.4 1.6
1 1/2 40 155 22.3 70 48.3 70 73 7 114.3 1.6
2 50 165 25.4 84 60.3 73 92.1 7 127 1.6
2 1/2 65 190 28.6 100 73 79 104.8 7 149.2 1.6
3 80 210 31.8 117 88.9 83 127 7 168.3 1.6
3 1/2 90 230 35 133 101.6 86 139.7 7 184.2 1.6
4 100 275 38.1 152 114.3 102 157.2 7 215.9 1.6
5 125 330 44.5 189 141.3 114 185.7 7 266.7 1.6
6 150 355 47.7 222 168.3 117 215.9 7 292.1 1.6
8 200 420 55.6 273 219.1 133 269.9 7 349.2 1.6
10 250 510 63.5 343 273 152 323.8 7 431.8 1.6
12 300 560 66.7 400 323.8 156 381 7 489 1.6
14 350 605 69.9 432 355.6 165 412.8 7 527 1.6
16 400 685 76.2 495 406.4 178 469.9 7 603.2 1.6
18 450 745 82.6 546 457 184 533.4 7 654 1.6
20 500 815 88.9 610 508 190 584.2 7 723.9 1.6
24 600 940 101.6 718 610 203 692.2 7 838.2 1.6

Class 600 Weld Neck Flange Stud & Bolt Dimesions

Size in Inch Size in mm No of Bolts Bolt Size UNC RF Stud Length Hole Size ISO Stud Size Weight in kg
1/2 15 4 1/2 75 5/8 M14 1.5
3/4 20 4 5/8 90 3/4 M16 1.8
1 25 4 5/8 90 3/4 M16 1.8
1 1/4 32 4 5/8 95 3/4 M16 2.7
1 1/2 40 4 3/4 110 7/8 M20 3.7
2 50 8 5/8 110 3/4 M16 5.5
2 1/2 65 8 3/4 120 7/8 M20 8.2
3 80 8 3/4 125 7/8 M20 10.5
3 1/2 90 8 7/8 140 1 M24 11.8
4 100 8 7/8 145 1 M24 19.1
5 125 8 1 165 1 1/8 M27 31
6 150 12 1 170 1 1/8 M27 36
8 200 12 1 1/8 190 1 1/4 M30 55
10 250 16 1 1/4 215 1 3/8 M33 86
12 300 20 1 1/4 220 1 3/8 M33 102
14 350 20 1 3/8 235 1 1/2 M36 127
16 400 20 1 1/2 255 1 5/8 M39 177
18 450 20 1 5/8 275 1 3/4 M42 216
20 500 24 1 5/8 285 1 3/4 M42 268
24 600 24 1 7/8 330 2 M48 377