ASME B16.5 is a standard that provides specifications for pipe flanges and flanged fittings. Flanges are critical components in piping systems, used for connecting pipes, valves, and other equipment. Knowing the weight of ASME B16.5 forged flanges is important for various engineering and construction purposes. Below is a general weight chart for some common types and sizes of ASME B16.5 forged flanges. Please note that these weights are approximate and can vary depending on material type and specific design.
Weights in kilograms approximately given：
Class 150 | ||||||
NPS | Slip | Thd | Socket | Lap | Blind | Weld |
1/2 | 0.5 | 0.5 | 0.9 | 0.5 | 0.9 | 0.9 |
3/4 | 0.9 | 0.9 | 0.9 | 0.9 | 0.9 | 0.9 |
1 | 0.9 | 0.9 | 0.9 | 0.9 | 0.9 | 1.4 |
1¼ | 1.4 | 1.4 | 1.4 | 1.4 | 1.4 | 1.4 |
1½ | 1.4 | 1.4 | 1.4 | 1.4 | 1.8 | 1.8 |
2 | 2.3 | 2.3 | 2.3 | 2.3 | 2.3 | 2.7 |
2½ | 3.6 | 3.6 | 3.6 | 3.6 | 3.2 | 4.5 |
3 | 4.1 | 4.1 | 4.1 | 4.1 | 4.1 | 5.2 |
3½ | 4 | 5.4 | 4 | 4 | 5.9 | 5.4 |
4 | 5.9 | 5.9 | 5.9 | 5.9 | 7.7 | 7.4 |
5 | 6.8 | 6.8 | 6.8 | 6.8 | 9 | 9.5 |
6 | 8.6 | 8.6 | 8.6 | 8.6 | 12.2 | 11.7 |
8 | 13.5 | 13.5 | 13.5 | 13.5 | 21.2 | 18.9 |
10 | 19.4 | 19.4 | 19.4 | 19.4 | 31.5 | 24.3 |
12 | 28.8 | 28.8 | 28.8 | 28.8 | 55.4 | 39.6 |
14 | 40.5 | 40.5 | 40.5 | 47.3 | 63 | 51.3 |
16 | 47.7 | 44.1 | 44.1 | 63 | 81 | 63 |
18 | 58.5 | 58.5 | 58.5 | 72 | 99 | 74.3 |
20 | 74.3 | 74.3 | 74.3 | 87.8 | 128.3 | 88.7 |
22 | 83.3 | 83.3 | 83.3 | 110.3 | 159.8 | 101.3 |
24 | 99 | 99 | 99 | 123.8 | 193.5 | 120.6 |
Class 300 | ||||||
NPS | Slip | Thd | Socket | Lap | Blind | Weld |
1/2 | 0.9 | 0.9 | 1.4 | 0.9 | 0.9 | 0.9 |
3/4 | 1.4 | 1.4 | 1.4 | 1.4 | 1.4 | 1.4 |
1 | 1.4 | 1.4 | 1.4 | 1.4 | 1.8 | 1.8 |
1¼ | 2 | 2 | 1.8 | 2.1 | 2.7 | 2.3 |
1½ | 2.9 | 2.9 | 2.7 | 2.9 | 3.2 | 3.2 |
2 | 3.2 | 3.2 | 3.2 | 3.2 | 3.6 | 4.1 |
2½ | 4.5 | 4.5 | 4.5 | 4.5 | 5.4 | 5.4 |
3 | 5.9 | 6.3 | 5.9 | 6.5 | 7.2 | 8.1 |
3½ | 7.7 | 7.7 | 7.7 | 7.7 | 9.5 | 9 |
4 | 10.6 | 10.8 | 9.9 | 10.8 | 12.6 | 11.9 |
5 | 13.0 | 13.9 | 12.6 | 12.6 | 16.7 | 16.2 |
6 | 17.6 | 17.6 | 17.6 | 17.6 | 22.5 | 20.3 |
8 | 26.1 | 26.1 | 26.1 | 26.1 | 36.5 | 31.1 |
10 | 36.5 | 36.5 | 36.5 | 40 | 55.8 | 45 |
12 | 51.8 | 51.8 | 51.8 | 63 | 83.3 | 63.9 |
14 | 74.3 | 74.3 | 74.3 | 85.5 | 112.5 | 92.7 |
16 | 94.5 | 99 | 85.5 | 105.3 | 141.8 | 112.5 |
18 | 113.9 | 126 | 112.5 | 137.3 | 186.3 | 144 |
20 | 141.8 | 146.3 | 141.8 | 168.8 | 231.8 | 180 |
22 | 166.5 | 166.5 | 166.5 | 195.8 | 288 | 209.3 |
24 | 220.5 | 220.5 | 213.8 | 247.5 | 360 | 261 |
Class 400 | ||||||
NPS | Slip | Thd | Socket | Lap | Blind | Weld |
1/2 | 0.9 | 0.9 | 0.9 | 0.9 | 0.9 | 1.4 |
3/4 | 1.4 | 1.4 | 1.4 | 1.4 | 1.4 | 1.6 |
1 | 1.6 | 1.6 | 1.6 | 1.6 | 1.8 | 1.8 |
1¼ | 2 | 2 | 2 | 2 | 2.7 | 2 |
1½ | 2.9 | 2.9 | 2.9 | 2.9 | 3.6 | 3.6 |
2 | 3.6 | 3.6 | 3.6 | 3.6 | 4.5 | 4.5 |
2½ | 5.4 | 5.4 | 5.4 | 4 | 6.8 | 6.3 |
3 | 6.8 | 6.8 | 6.8 | 6.3 | 9 | 8.1 |
3½ | 9.5 | 9.5 | 9.5 | 9 | 13 | 11.7 |
4 | 11.7 | 11.7 | 11.7 | 11.3 | 14.9 | 15.8 |
5 | 13.9 | 13.9 | 13.9 | 13.0 | 19.8 | 19.4 |
6 | 19.8 | 19.8 | 19.8 | 18.9 | 27.5 | 25.7 |
8 | 30.2 | 30.2 | 30.2 | 28.8 | 45 | 40.1 |
10 | 40 | 40 | 40 | 49.5 | 69.8 | 56.3 |
12 | 58.5 | 58.5 | 58.5 | 68.4 | 101.7 | 78.8 |
14 | 85 | 85 | 85 | 94.5 | 139.5 | 104.9 |
16 | 113.9 | 113.9 | 113.9 | 126 | 179.1 | 132.8 |
18 | 139.5 | 139.5 | 139.5 | 155.3 | 225.9 | 162 |
20 | 170.1 | 170.1 | 170.1 | 189 | 279.5 | 200.3 |
22 | 182.3 | 182.3 | 182.3 | 204.8 | 324 | 227.3 |
24 | 242.6 | 242.6 | 242.6 | 276.8 | 421.2 | 288 |
Class 600 | ||||||
NPS | Slip | Thd | Socket | Lap | Blind | Weld |
1/2 | 0.9 | 0.9 | 0.9 | 0.9 | 1.4 | 1.4 |
3/4 | 1.4 | 1.4 | 1.4 | 1.4 | 1.8 | 1.8 |
1 | 1.8 | 1.8 | 1.8 | 1.8 | 1.8 | 1.8 |
1¼ | 2.3 | 2.3 | 2.3 | 2.3 | 2.7 | 2.7 |
1½ | 3.2 | 3.2 | 3.2 | 3.2 | 3.6 | 3.6 |
2 | 4.1 | 4.1 | 4.1 | 4.1 | 4.5 | 5.4 |
2½ | 5.9 | 5.9 | 5.9 | 5.4 | 6.8 | 8.1 |
3 | 7.2 | 7.2 | 7.2 | 6.8 | 9 | 10.4 |
3½ | 9.5 | 9.5 | 9.5 | 9 | 13 | 11.7 |
4 | 16.7 | 16.7 | 16.7 | 16.2 | 18.5 | 18.9 |
5 | 28.4 | 28.4 | 28.4 | 28.4 | 30.6 | 30.6 |
6 | 36 | 36 | 36 | 35.1 | 38.7 | 36.5 |
8 | 51.8 | 51.8 | 51.8 | 50.4 | 63 | 54 |
10 | 79.7 | 79.7 | 79.7 | 87.8 | 103 | 85.5 |
12 | 96.8 | 96.8 | 96.8 | 108 | 132.8 | 101.7 |
14 | 116.6 | 116.6 | 116.6 | 130.5 | 170.1 | 156.2 |
16 | 164.7 | 164.7 | 164.7 | 180 | 237.2 | 216.5 |
18 | 214.2 | 214.2 | 214.2 | 211.1 | 299.3 | 249.8 |
20 | 275.4 | 275.4 | 275.4 | 271.8 | 384.8 | 310.5 |
22 | 265.5 | 265.5 | 265.5 | 301.5 | 450 | 324 |
24 | 394.2 | 394.2 | 394.2 | 389.7 | 562.5 | 439.7 |
Class 900 | ||||||
NPS | Slip | Thd | Socket | Lap | Blind | Weld |
1/2 | 2.7 | 2.7 | 2.7 | 2.7 | 1.8 | 3.2 |
3/4 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 3.2 |
1 | 3.4 | 3.4 | 3.4 | 3.4 | 4.1 | 3.8 |
1¼ | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 |
1½ | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 |
2 | 9.9 | 9.9 | 9.9 | 9.5 | 11.3 | 10.8 |
2½ | 13.9 | 13.9 | 13.9 | 11.3 | 14.4 | 13.9 |
3 | 16.2 | 16.2 | 16.2 | 13.0 | 15.8 | 16.2 |
4 | 23.9 | 23.9 | 23.9 | 22 | 24.3 | 23.9 |
5 | 37.4 | 37.4 | 37.4 | 36.5 | 39.2 | 38.7 |
6 | 49.5 | 49.5 | 49.5 | 47.3 | 51.8 | 49.5 |
8 | 77.4 | 77.4 | 77.4 | 85.5 | 90 | 84.2 |
10 | 110.3 | 110.3 | 110.3 | 124.7 | 130.5 | 120.6 |
12 | 146.7 | 146.7 | 146.7 | 166 | 186.8 | 167.4 |
14 | 180 | 180 | 180 | 186.8 | 234 | 252.9 |
16 | 206.6 | 206.6 | 206.6 | 219.6 | 278.6 | 308.3 |
18 | 291.2 | 291.2 | 291.2 | 301.5 | 396 | 415.8 |
20 | 356.4 | 356.4 | 356.4 | 390.6 | 498.2 | 523.8 |
24 | 666 | 666 | 666 | 746.6 | 944.6 | 948.2 |
Class 1500 | ||||||
NPS | Slip | Thd | Socket | Lap | Blind | Weld |
1/2 | 2.7 | 2.7 | 2.7 | 2.7 | 1.8 | 3.2 |
3/4 | 2.7 | 2.7 | 2.7 | 2.7 | 2.7 | 3.2 |
1 | 3.6 | 3.6 | 3.6 | 3.6 | 4.1 | 4.1 |
1¼ | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 |
1½ | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 | 6.3 |
2 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 | 11.3 |
2½ | 16.2 | 16.2 | 16.2 | 15.8 | 15.8 | 16.2 |
3 | 21.6 | 21.6 | 21.6 | 21.2 | 21.6 | 21.6 |
4 | 32.9 | 32.9 | 32.9 | 33.8 | 32.9 | 32.9 |
5 | 59.4 | 59.4 | 59.4 | 63 | 63 | 59.4 |
6 | 74.3 | 74.3 | 74.3 | 76.5 | 72 | 74.3 |
8 | 117 | 117 | 117 | 128.7 | 135.9 | 123.8 |
10 | 196.2 | 196.2 | 196.2 | 218.3 | 229.5 | 204.8 |
12 | 300.2 | 300.2 | 300.2 | 337.1 | 348.8 | 310.5 |
14 | 423 | 423 | 423 | 400.5 | 438.8 | 423 |
16 | 562.5 | 562.5 | 562.5 | 562.5 | 585 | 562.5 |
18 | 731.3 | 731.3 | 731.3 | 663.8 | 787.5 | 731.3 |
20 | 922.5 | 922.5 | 922.5 | 798.8 | 1001 | 922.5 |
24 | 1271 | 1271 | 1271 | 1271 | 1631 | 1496 |
Class 2500 | ||||||
NPS | Slip | Thd | Socket | Lap | Blind | Weld |
1/2 | … | 3.2 | … | 3.2 | 3.2 | 3.6 |
3/4 | … | 4.1 | … | 3.6 | 4.5 | 4.1 |
1 | … | 5.4 | … | 5.4 | 5.4 | 5.9 |
1¼ | … | 8.1 | … | 7.7 | 8.1 | 9 |
1½ | … | 11.3 | … | 10.8 | 11.3 | 12.6 |
2 | … | 17.1 | … | 16.7 | 17.6 | 18.9 |
2½ | … | 24.8 | … | 23.9 | 25.2 | 23.4 |
3 | … | 37.4 | … | 36 | 38.7 | 42.3 |
4 | … | 57.2 | … | 54.9 | 59.9 | 65.7 |
5 | … | 94.5 | … | 91.8 | 100.4 | 109.8 |
6 | … | 145.4 | … | 141.3 | 155.3 | 170.1 |
8 | … | 218.3 | … | 211.9 | 239.8 | 259.2 |
10 | … | 416.3 | … | 403.7 | 461.3 | 480.6 |
12 | … | 585 | … | 567.9 | 658.8 | 723.6 |
Whether you require ASME B16.5, MSS-SP-44, ASME B16.47 Series A, API Type 6A, RTJ Face, or API-605 flanges, SSM is your trusted partner for all your industrial flange needs. Contact us today to discuss your requirements and experience the SSM difference.
