The flange weight chart shows the weight, in kilograms, of slip-on, welding neck and blind flanges by nominal size and pressure rating/class.

 

FLANGE WEIGHT – CLASS 150 (ASME B16.5)

NPS
(Inches)
DN
(mm)
FLANGE OD
A MM
FLANGE THICKNESS D
MM
SLIP ON FLANGE WEIGHT (KGS) WELD NECK FLANGE WEIGHT (KGS) BLIND FLANGE WEIGHT (KGS)
1/ 2 15 88.9 11.2 0.4 0.5 0.4
3/ 4 20 98.6 12.7 0.6 0.7 0.6
1 25 108 14.2 0.8 1 0.9
1 1/ 4 32 117.3 15.7 1 1.3 1.2
1 1/ 2 40 127 17.5 1.3 1.7 1.5
2 50 152.4 19.1 2.1 2.6 2.4
2 1/ 2 65 177.8 22.4 3.3 4.1 3.9
3 80 190.5 23.9 3.9 4.9 4.9
3 1/ 2 90 215.9 23.9 4.8 6.1 6.2
4 100 228.6 23.9 5.3 6.8 7.0
5 125 254 23.9 6.1 8.6 8.6
6 150 279.4 25.4 7.5 10.6 11.3
8 200 342.9 28.4 12.1 17.6 19.6
10 250 406.4 30.2 16.5 24 28.6
12 300 482.6 31.8 26.2 36.5 43.2
14 350 533.4 35.1 34.6 48.4 58.1
16 400 596.9 36.6 44.8 60.6 76.1
18 450 635 39.6 48.9 68.3 93.7
20 500 698.5 42.9 61.9 84.5 122.0
24 600 812.8 47.8 86.9 115 185.0

 

FLANGE WEIGHT – CLASS 300 (ASME B16.5)

NPS
(Inches)
DN
(mm)
FLANGE OD
A MM
FLANGE THICKNESS D
MM
SLIP ON / SOCKET WELD FLANGE WEIGHT (KGS) WELD NECK FLANGE WEIGHT (KGS) BLIND FLANGE WEIGHT (KGS)
1/ 2 15 95.3 14.2 0.6 0.8 0.6
3/ 4 20 117.3 15.7 1.1 1.3 1.1
1 25 124 17.5 1.4 1.5 1.4
1 1/ 4 32 133.4 19.1 1.7 2.0 1.8
1 1/ 2 40 155.5 20.6 2.5 2.9 2.7
2 50 165.1 22.4 2.9 3.4 3.2
2 1/ 2 65 190.5 25.4 4.3 5.2 4.9
3 80 215.9 28.4 5.9 6.9 6.8
3 1/ 2 90 228.6 30.2 7.3 8.7 8.7
4 100 254 31.8 9.6 11.2 11.5
5 125 279.4 35.1 12.3 15.1 15.6
6 150 317.5 36.6 15.6 19.1 20.9
8 200 381 41.1 24.2 29.9 34.3
10 250 444.5 47.6 34.1 42.7 53.3
12 300 520.7 50.8 49.8 61.8 78.8
14 350 584.2 53.8 69.9 85.8 105.0
16 400 647.7 57.2 88.1 106.0 137.0
18 450 711.2 60.5 109.0 131.0 175.0
20 500 774.7 63.5 134.0 158.0 221.0
24 600 914.4 70.0 201.0 230.0 339.0

 

FLANGE WEIGHT – CLASS 600 (ASME B16.5)

NPS
(Inches)
DN
(mm)
FLANGE OD
A MM
FLANGE THICKNESS D
MM
SLIP ON / SOCKET WELD FLANGE WEIGHT (KGS) WELD NECK FLANGE WEIGHT (KGS) BLIND FLANGE WEIGHT (KGS)
1/ 2 15 95.3 14.2 0.7 0.9 0.8
3/ 4 20 117.3 15.7 1.3 1.5 1.3
1 25 124.0 17.5 1.5 1.8 1.6
1 1/ 4 32 133.4 20.6 2 2.5 2.2
1 1/ 2 40 155.4 22.4 3 3.5 3.3
2 50 165.1 25.4 3.6 4.4 4.2
2 1/ 2 65 190.5 28.4 5.3 6.4 6.1
3 80 209.6 31.8 7 8.5 8.4
3 1/ 2 90 228.6 35.1 8.8 10.7 11
4 100 273.1 38.1 14.5 17.4 17.3
5 125 330.2 44.5 24.4 29.2 29.4
6 150 355.6 47.8 28.7 34.9 36.1
8 200 419.1 55.6 43.4 53.9 58.9
10 250 508 63.5 70.3 86.5 97.5
12 300 558.8 66.5 84.2 103.0 124
14 350 603.3 69.9 98.7 122.0 151
16 400 685.8 76.2 142.0 170.0 214
18 450 743 82.6 173.0 204.0 272
20 500 812.8 88.9 220.0 254.0 349.0
24 600 939.8 101.6 312.0 358.0 533.0

 

FLANGE WEIGHT – CLASS 900 (ASME B16.5)

NPS
(Inches)
DN
(mm)
FLANGE OD
A MM
FLANGE THICKNESS D
MM
SLIP ON / SOCKET WELD FLANGE WEIGHT (KGS) WELD NECK FLANGE WEIGHT (KGS) BLIND FLANGE WEIGHT (KGS)
1/ 2 15 120.7 22.4 1.8 1.9 1.8
3/ 4 20 130 25.4 2.4 2.6 2.4
1 25 149.4 28.4 3.6 3.7 3.6
1 1/ 4 32 158.8 28.4 4 4.3 4.1
1 1/ 2 40 177.8 31.8 5.5 5.9 5.8
2 50 215.9 38.1 10.2 10.8 10
2 1/ 2 65 244.3 41.1 13.9 15 14
3 80 241.3 38.1 11.6 13.7 13.1
4 100 292.1 44.5 19.7 22.5 26.9
5 125 349.3 50.8 31.9 37.4 36.5
6 150 381 55.6 41.1 47.7 47.4
8 200 469.9 63.5 70.7 81.3 82.5
10 250 546.1 69.9 101.0 119 122.0
12 300 609.6 79.2 133.0 157.0 173.0
14 350 641.4 85.6 153.0 180.0 206.0
16 400 704.9 88.9 185.0 217.0 259.0
18 450 787.4 101.6 258.0 292.0 367.0
20 500 857.3 108.0 317.0 362.0 463.0
24 600 1041.4 139.7 606.0 665.0 876.0

 

FLANGE WEIGHT – CLASS 1500 (ASME B16.5)

NPS
(Inches)
DN
(mm)
FLANGE OD
A MM
FLANGE THICKNESS D
MM
SLIP ON / SOCKET WELD FLANGE WEIGHT (KGS) WELD NECK FLANGE WEIGHT (KGS BLIND FLANGE WEIGHT (KGS)
1/ 2 15 120.7 22.4 1.8 1.9 1.8
3/ 4 20 130 25.4 2.4 2.6 2.4
1 25 149.4 28.4 3.6 3.7 3.6
1 1/ 4 32 158.8 28.4 4 4.3 4.1
1 1/ 2 40 177.8 31.8 5.5 5.9 5.8
2 50 215.9 38.1 10.2 10.8 10.1
2 1/ 2 65 244.3 41.1 13.9 15 14
3 80 266.7 47.8 19.9 19.1
4 100 311.2 53.8 29.9 29.9
5 125 374.7 73.2 55.4 58.4
6 150 393.7 82.6 68.4 71.8
8 200 482.6 91.9 117 122
10 250 584.2 108 194.0 210.0
12 300 673.1 124 288.0 316.0
14 350 749.3 133.4 380.0 420
16 400 825.5 146.1 485.0 558.0
18 450 914.4 162.1 644.0 760.0
20 500 984.3 177.8 775.0 965.0
24 600 1168.4 203.2 1232.0 1558.0

 

FLANGE WEIGHT – CLASS 2500 (ASME B16.5)

NPS
(Inches)
DN
(mm)
FLANGE OD
A MM
FLANGE THICKNESS D
MM
WELD NECK FLANGE WEIGHT (KGS) BLIND FLANGE WEIGHT (KGS)
1/ 2 15 133.4 30.2 3.1 3.0
3/ 4 20 139.7 31.8 3.7 3.5
1 25 158.8 35.1 5.2 5.0
1 1/ 4 32 184.2 38.1 7.7 7.4
1 1/ 2 40 203.2 44.5 10.9 10.4
2 50 235 50.8 16.2 15.6
2 1/ 2 65 266.7 57.2 23.7 22.6
3 80 304.8 66.5 36.2 34.8
4 100 355.6 76.2 55.3 53.9
5 125 419.1 91.9 92.5 90.8
6 150 482.6 108 143.0 141
8 200 552.5 127 215.0 214
10 250 673.1 165.1 406.0 411.0
12 300 762 184.2 572.0 592.0