NPS | LBS | KG |
1/2 | 0.18 | 0.08 |
3/4 | 0.19 | 0.09 |
1 | 0.4 | 0.18 |
1¼ | 0.6 | 0.27 |
1½ | 0.9 | 0.41 |
2 | 1.6 | 0.73 |
2½ | 3.25 | 1.47 |
3 | 5 | 2.27 |
3½ | 6.75 | 3.06 |
4 | 9 | 4.08 |
5 | 15 | 6.8 |
6 | 24.5 | 11.11 |
8 | 50 | 22.68 |
10 | 88 | 39.92 |
12 | 125 | 56.7 |
14 | 160 | 72.57 |
16 | 206 | 93.44 |
18 | 260 | 117.93 |
20 | 320 | 145.15 |
22 | 394 | 178.72 |
24 | 460 | 208.65 |
26 | 550 | 249.48 |
30 | 734 | 332.94 |
36 | 1062 | 481.72 |
Note:
NPS | LBS | KG |
1/2 | 0.25 | 0.11 |
3/4 | 0.25 | 0.11 |
1 | 0.5 | 0.23 |
1¼ | 0.9 | 0.41 |
1½ | 1.15 | 0.52 |
2 | 2.2 | 1 |
2½ | 4 | 1.81 |
3 | 6.5 | 2.95 |
3½ | 8.35 | 3.79 |
4 | 13.5 | 6.12 |
5 | 22 | 9.98 |
6 | 35 | 15.88 |
8 | 71 | 32.21 |
10 | 107 | 48.53 |
12 | 160 | 72.57 |
14 | 205 | 92.99 |
16 | 276 | 125.19 |
18 | 340 | 154.22 |
20 | 420 | 190.51 |
22 | 520 | 235.87 |
24 | 600 | 272.16 |
26 | 729 | 330.67 |
30 | 975 | 442.25 |
36 | 1412 | 640.47 |
Note:
NPS | LBS | KG |
1 | 0.6 | 0.27 |
1¼ | 1 | 0.45 |
1½ | 1.8 | 0.82 |
2 | 3.25 | 1.47 |
2½ | 5.13 | 2.33 |
3 | 8.5 | 3.86 |
3½ | - | - |
4 | 18 | 8.16 |
5 | 32 | 14.51 |
6 | 57 | 25.85 |
8 | 120 | 54.43 |
10 | 260 | 117.93 |
12 | 450 | 204.12 |
14 | 572 | 259.45 |
Note:
NPS | LBS | KG |
1 | 0.75 | 0.34 |
1¼ | 1.38 | 0.63 |
1½ | 1.5 | 0.68 |
2 | 3.5 | 1.59 |
2½ | 7 | 3.18 |
3 | 11 | 4.99 |
3½ | 16 | 7.26 |
4 | 20 | 9.07 |
5 | 36 | 16.33 |
6 | 65 | 29.48 |
8 | 118 | 53.52 |
Note:
NPS | LBS | KG |
1 | 0.25 | 0.11 |
1¼ | 0.4 | 0.18 |
1½ | 0.56 | 0.25 |
2 | 1 | 0.45 |
2½ | 2.13 | 0.97 |
3 | 3 | 1.36 |
3½ | 4.5 | 2.04 |
4 | 6.25 | 2.83 |
5 | 9.6 | 4.35 |
6 | 18 | 8.16 |
8 | 34 | 15.42 |
10 | 58 | 26.31 |
12 | 80 | 36.29 |
14 | 105 | 47.63 |
16 | 132 | 59.87 |
18 | 167 | 75.75 |
20 | 210 | 95.25 |
22 | - | - |
24 | 298 | 135.17 |
Note:
NPS | LBS | KG |
1½ | 0.75 | 0.34 |
2 | 1.5 | 0.68 |
2½ | 2.8 | 1.27 |
3 | 4.25 | 1.93 |
3½ | 6 | 2.72 |
4 | 8.5 | 3.86 |
5 | 14 | 6.35 |
6 | 23 | 10.43 |
8 | 47.5 | 21.55 |
10 | 70 | 31.75 |
12 | 104 | 47.17 |
14 | 140 | 63.5 |
16 | 174 | 78.93 |
18 | 219 | 99.34 |
20 | 275 | 124.74 |
22 | - | - |
24 | 392 | 177.81 |
Note:
NPS | LBS | KG |
2 | 3 | 1.36 |
2½ | 6 | 2.72 |
3 | 10 | 4.54 |
3½ | 13 | 5.9 |
4 | 18 | 8.16 |
5 | 29 | 13.15 |
6 | 45 | 20.41 |
8 | 90 | 40.82 |
10 | 159 | 72.12 |
12 | 233 | 105.69 |
14 | 298 | 135.17 |
16 | 390 | 176.9 |
18 | 495 | 224.53 |
20 | 610 | 276.69 |
22 | 735 | 333.39 |
24 | 875 | 396.89 |
26 | 1030 | 467.2 |
30 | 1370 | 621.42 |
36 | 1970 | 893.58 |
Note:
NPS | LBS | KG |
2 | 4 | 1.81 |
2½ | 8 | 3.63 |
3 | 13 | 5.9 |
3½ | 18 | 8.16 |
4 | 25 | 11.34 |
5 | 43 | 19.5 |
6 | 70 | 31.75 |
8 | 140 | 63.5 |
10 | 218 | 98.88 |
12 | 310 | 140.61 |
14 | 400 | 181.44 |
16 | 520 | 235.87 |
18 | 660 | 299.37 |
20 | 810 | 367.41 |
22 | 980 | 444.52 |
24 | 1170 | 530.7 |
26 | 1370 | 621.42 |
30 | 1830 | 830.07 |
36 | 2630 | 1192.95 |
Note:
NPS | LBS | KG |
1/2 | 0.09 | 0.04 |
3/4 | 0.09 | 0.04 |
1 | 0.25 | 0.11 |
1¼ | 0.38 | 0.17 |
1½ | 0.4 | 0.18 |
2 | 0.81 | 0.37 |
2½ | 1.75 | 0.79 |
3 | 2.63 | 1.19 |
3½ | 3.5 | 1.59 |
4 | 4.5 | 2.04 |
5 | 7.5 | 3.4 |
6 | 12 | 5.44 |
8 | 23 | 10.43 |
10 | 43 | 19.5 |
12 | 62 | 28.12 |
14 | 80 | 36.29 |
16 | 100 | 45.36 |
18 | 126 | 57.15 |
20 | 160 | 72.57 |
22 | 197 | 89.36 |
24 | 238 | 107.95 |
26 | 275 | 124.74 |
30 | 367 | 166.47 |
36 | 531 | 240.86 |
Note:
NPS | LBS | KG |
1/2 | 0.19 | 0.09 |
3/4 | 0.19 | 0.09 |
1 | 0.31 | 0.14 |
1¼ | 0.5 | 0.23 |
1½ | 0.69 | 0.31 |
2 | 1.19 | 0.54 |
2½ | 2.13 | 0.97 |
3 | 3.5 | 1.59 |
3½ | 4.5 | 2.04 |
4 | 6.1 | 2.77 |
5 | 10.7 | 4.85 |
6 | 17.5 | 7.94 |
8 | 35 | 15.88 |
10 | 53 | 24.04 |
12 | 84 | 38.1 |
14 | 100 | 45.36 |
16 | 135 | 61.23 |
18 | 167 | 75.75 |
20 | 206 | 93.44 |
22 | 260 | 117.93 |
24 | 300 | 136.08 |
26 | 365 | 165.56 |
30 | 488 | 221.35 |
36 | 706 | 320.24 |
Note:
NPS | LBS | KG |
2 | 1.5 | 0.68 |
2½ | 3 | 1.36 |
3 | 5 | 2.27 |
3½ | 7 | 3.18 |
4 | 9 | 4.08 |
5 | 15 | 6.8 |
6 | 23 | 10.43 |
8 | 45 | 20.41 |
10 | 80 | 36.29 |
12 | 117 | 53.07 |
14 | 149 | 67.59 |
16 | 195 | 88.45 |
18 | 248 | 112.49 |
20 | 305 | 138.35 |
22 | 368 | 166.92 |
24 | 438 | 198.67 |
26 | 515 | 233.6 |
30 | 685 | 310.71 |
36 | 985 | 446.79 |
Note:
NPS | LBS | KG |
2 | 2.1 | 0.95 |
2½ | 4 | 1.81 |
3 | 7 | 3.18 |
3½ | 9 | 4.08 |
4 | 13 | 5.9 |
5 | 22 | 9.98 |
6 | 35 | 15.88 |
8 | 70 | 31.75 |
10 | 109 | 49.44 |
12 | 155 | 70.31 |
14 | 200 | 90.72 |
16 | 260 | 117.93 |
18 | 330 | 149.69 |
20 | 405 | 183.7 |
22 | 490 | 222.26 |
24 | 585 | 265.35 |
26 | 685 | 310.71 |
30 | 915 | 415.04 |
36 | 1315 | 596.47 |
Note:
NPS | LBS | KG |
1/2 | 0.35 | 0.16 |
3/4 | 0.4 | 0.18 |
1 | 0.75 | 0.34 |
1¼ | 1.25 | 0.57 |
1½ | 1.88 | 0.85 |
2 | 3.23 | 1.47 |
2½ | 6.5 | 2.95 |
3 | 10.25 | 4.65 |
3½ | 13 | 5.9 |
4 | 18.5 | 8.39 |
5 | 30 | 13.61 |
6 | 50 | 22.68 |
8 | 95 | 43.09 |
10 | 117 | 53.07 |
12 | 230 | 104.33 |
14 | 325 | 147.42 |
16 | 412 | 186.88 |
18 | 510 | 231.33 |
20 | 640 | 290.3 |
22 | 787 | 356.98 |
24 | 890 | 403.7 |
Note:
NPS | LBS | KG |
3/4 | 0.65 | 0.29 |
1 | 1 | 0.45 |
1¼ | 1.75 | 0.79 |
1½ | 2.39 | 1.08 |
2 | 4.4 | 2 |
2½ | 8 | 3.63 |
3 | 13 | 5.9 |
3½ | 16.75 | 7.6 |
4 | 25 | 11.34 |
5 | 44 | 19.96 |
6 | 70 | 31.75 |
8 | 142 | 64.41 |
10 | 215 | 97.52 |
12 | 320 | 145.15 |
14 | 400 | 181.44 |
16 | 550 | 249.48 |
18 | 690 | 312.98 |
20 | 830 | 376.48 |
22 | 1040 | 471.74 |
24 | 1200 | 544.31 |
Note:
NPS | LBS | KG |
1 | 0.5 | 0.23 |
1¼ | 0.8 | 0.36 |
1½ | 1.13 | 0.51 |
2 | 2 | 0.91 |
2½ | 4.25 | 1.93 |
3 | 6 | 2.72 |
3½ | 9 | 4.08 |
4 | 12.5 | 5.67 |
5 | 19 | 8.62 |
6 | 35 | 15.88 |
8 | 68 | 30.84 |
10 | 115 | 52.16 |
12 | 155 | 70.31 |
14 | 210 | 95.25 |
16 | 260 | 117.93 |
18 | 330 | 149.69 |
20 | 410 | 185.97 |
22 | - | - |
24 | 590 | 267.62 |
Note:
NPS | LBS | KG |
1½ | 1.5 | 0.68 |
2 | 3 | 1.36 |
2½ | 5.6 | 2.54 |
3 | 8.5 | 3.86 |
3½ | 12 | 5.44 |
4 | 17 | 7.71 |
5 | 28 | 12.7 |
6 | 46 | 20.87 |
8 | 100 | 45.36 |
10 | 140 | 63.5 |
12 | 218 | 98.88 |
14 | 275 | 124.74 |
16 | 340 | 154.22 |
18 | 430 | 195.04 |
20 | 550 | 249.48 |
22 | - | - |
24 | 780 | 353.8 |
Note:
NPS | LBS | KG |
2-1½ | 1.3 | 0.59 |
2-1¼ | 1.2 | 0.54 |
2-1 | 1.1 | 0.5 |
2-3/4 | - | - |
2½-2 | 2.45 | 1.11 |
2½-1½ | 2.2 | 1 |
2½-1¼ | 2.1 | 0.95 |
2½-1 | - | - |
3-2½ | 4.15 | 1.88 |
3-2 | 3.5 | 1.59 |
3-1½ | 3.2 | 1.45 |
3-1¼ | - | - |
3½-3 | 6 | 2.72 |
3½-2½ | 5.4 | 2.45 |
3½-2 | 4.5 | 2.04 |
3½-1½ | - | - |
3½-1¼ | - | - |
4-3½ | 8.2 | 3.72 |
4-3 | 7.5 | 3.4 |
4-2½ | 10.5 | 4.76 |
4-2 | 5.95 | 2.7 |
4-1½ | - | - |
5-4 | 13.1 | 5.94 |
5-3½ | 12.2 | 5.53 |
5-3 | 11.4 | 5.17 |
5-2½ | 10.5 | 4.76 |
5-2 | - | - |
6-5 | 20.7 | 9.39 |
6-4 | 18.4 | 8.35 |
6-3½ | 17.3 | 7.85 |
6-3 | 16.4 | 7.44 |
6-2½ | - | - |
8-6 | 39.2 | 17.78 |
8-5 | 35.5 | 16.1 |
8-4 | 32.4 | 14.7 |
8-3½ | - | - |
10-8 | 71.2 | 32.3 |
10-6 | 61.2 | 27.76 |
10-5 | 56.7 | 25.72 |
10-4 | - | - |
12-10 | 111.5 | 50.58 |
12-8 | 96.5 | 43.77 |
12-6 | 84.7 | 38.42 |
Note:
NPS | LBS | KG |
2-1½ | 1.8 | 0.82 |
2-1¼ | 1.65 | 0.75 |
2-1 | 1.5 | 0.68 |
2-3/4 | - | - |
2½-2 | 3.25 | 1.47 |
2½-1½ | 2.9 | 1.32 |
2½-1¼ | 2.75 | 1.25 |
2½-1 | - | - |
3-2½ | 5.5 | 2.49 |
3-2 | 4.7 | 2.13 |
3-1½ | 4.3 | 1.95 |
3-1¼ | - | - |
3½-3 | 8.2 | 3.72 |
3½-2½ | 7.25 | 3.29 |
3½-2 | 6.3 | 2.86 |
3½-1½ | - | - |
3½-1¼ | - | - |
4-3½ | 11.3 | 5.13 |
4-3 | 10.4 | 4.72 |
4-2½ | 9.3 | 4.22 |
4-2 | 8.25 | 3.74 |
4-1½ | - | - |
5-4 | 18.4 | 8.35 |
5-3½ | 17.1 | 7.76 |
5-3 | 16 | 7.26 |
5-2½ | 14.7 | 6.67 |
5-2 | - | - |
6-5 | 30.5 | 13.83 |
6-4 | 26.9 | 12.2 |
6-3½ | 25.4 | 11.52 |
6-3 | 24 | 10.89 |
6-2½ | - | - |
8-6 | 59.4 | 26.94 |
8-5 | 52.9 | 24 |
8-4 | 48.2 | 21.86 |
8-3½ | - | - |
10-8 | 101 | 45.81 |
10-6 | 85.8 | 38.92 |
10-5 | 77.7 | 35.24 |
10-4 | - | - |
12-10 | 149.1 | 67.63 |
12-8 | 134 | 60.78 |
12-6 | 116 | 52.62 |
Notes:
ASME buttweld fitting specifications do not specify weights for fittings. Weights quoted in the tables on this page are based on manufacturers information and should be considered as approximate and provided as a guide only (fitting weights can vary considerably between manufacturers due to differences in construction).