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Fitting Guide

Weights of Buttweld Reducers

Weights Reducers Concentric and Eccentric schedule STD

Weights of Buttweld Reducers
NPS LBS KG
3/4-1/2 0.17 0.08
3/4-3/8 0.15 0.07
1-3/4 0.4 0.18
1-1/2 0.4 0.18
1.1/4-1 0.5 0.23
1.1/4-3/4 0.4 0.18
1.1/4-1/2 0.4 0.18
1.1/2-1.1/4 0.7 0.32
1.1/2-1 0.62 0.28
1.1/2-3/4 0.54 0.24
1.1/2-1/2 0.5 0.23
2-1.1/2 0.9 0.41
2-1.1/4 0.84 0.38
2-1 0.76 0.34
2-3/4 0.7 0.32
2.1/2-2 1.5 0.68
2.1/2-1.1/2 1.38 0.63
2.1/2-1.1/4 1.25 0.57
2.1/2-1 1.25 0.57
3-2.1/2 2 0.91
3-2 1.8 0.82
3-1.1/2 1.7 0.77
3-1.1/4 1.6 0.73
3.1/2-3 3.15 1.43
3.1/2-2.1/2 2.88 1.31
3.1/2-2 2.75 1.25
3.1/2-1.1/2 2.5 1.13
3.1/2-1.1/4 2.4 1.09
4-3.1/2 3.5 1.59
4-3 3.38 1.53
4-2.1/2 3.25 1.47
4-2 3 1.36
4-1.1/2 2.88 1.31
5-4 6 2.72
5-3.1/2 5.75 2.61
5-3 5.5 2.49
5-2.1/2 5.25 2.38
5-2 5 2.27
6-5 8.5 3.86
6-4 8.25 3.74
6-3.1/2 8.25 3.74
6-3 8 3.63
6-2.1/2 7.25 3.29
8-6 13.2 5.99
8-5 12 5.44
8-4 11 4.99
8-3.1/2 11 4.99
10-8 22 9.98
10-6 21.5 9.75
10-5 21 9.53
10-4 20 9.07
12-10 34 15.42
12-8 32 14.51
12-6 31 14.06
12-5 30 13.61
14-12 60 27.22
14-10 59.2 26.85
14-8 58.5 26.54
14-6 58 26.31
16-14 71 32.21
16-12 70 31.75
16-10 69.5 31.52
16-8 68.5 31.07
16-6 - -
18-16 85 38.56
18-14 84 38.1
18-12 83 37.65
18-10 82 37.19
18-8 - -
20-18 125 56.7
20-16 124 56.25
20-14 122 55.34
20-12 120 54.43
20-10 - -
20-8 - -
22-20 142 64.41
22-18 138 62.6
22-16 131 59.42
22-14 123 55.79
22-12 - -
22-10 - -
24-22 - -
24-20 150 68.04
24-18 148 67.13
24-16 145 65.77
24-14 - -
24-12 - -
24-10 - -
26-24 207 93.89
26-22 200 90.72
26-20 190 86.18
26-18 182 82.55
26-16 - -
26-14 - -
26-12 - -
28-26 224 101.6
28-24 216 97.98
28-22 210 95.25
28-20 199 90.26
30-28 241 109.32
30-26 232 105.23
30-24 224 101.6
30-22 220 99.79
30-20 220 99.79

Note:

Weights Reducers Concentric and Eccentric schedule XS

Weights of Buttweld Reducers
NPS LBS KG
3/4-1/2 0.22 0.1
3/4-3/8 0.2 0.09
1-3/4 0.45 0.2
1-1/2 0.45 0.2
1.1/4-1 0.5 0.23
1.1/4-3/4 0.5 0.23
1.1/4-1/2 0.5 0.23
1.1/2-1.1/4 0.78 0.35
1.1/2-1 0.75 0.34
1.1/2-3/4 0.7 0.32
1.1/2-1/2 0.65 0.29
2-1.1/2 1.2 0.54
2-1.1/4 1.15 0.52
2-1 1.1 0.5
2-3/4 1 0.45
2.1/2-2 2 0.91
2.1/2-1.1/2 1.9 0.86
2.1/2-1.1/4 1.85 0.84
2.1/2-1 1.75 0.79
3-2.1/2 2.75 1.25
3-2 2.6 1.18
3-1.1/2 2.5 1.13
3-1.1/4 2.4 1.09
3.1/2-3 4 1.81
3.1/2-2.1/2 3.5 1.59
3.1/2-2 3.5 1.59
3.1/2-1.1/2 3.25 1.47
3.1/2-1.1/4 3.25 1.47
4-3.1/2 4.75 2.15
4-3 4.5 2.04
4-2.1/2 4.38 1.99
4-2 4.25 1.93
4-1.1/2 4 1.81
5-4 8.25 3.74
5-3.1/2 7.75 3.52
5-3 7.5 3.4
5-2.1/2 7 3.18
5-2 6.5 2.95
6-5 12 5.44
6-4 11.5 5.22
6-3.1/2 11 4.99
6-3 10.5 4.76
6-2.1/2 10 4.54
8-6 18.7 8.48
8-5 18 8.16
8-4 17 7.71
8-3.1/2 16.5 7.48
10-8 29.5 13.38
10-6 29.5 13.38
10-5 28 12.7
10-4 25.5 11.57
12-10 43.5 19.73
12-8 42 19.05
12-6 40 18.14
12-5 39 17.69
14-12 80 36.29
14-10 79.2 35.92
14-8 78.5 35.61
14-6 78 35.38
16-14 91 41.28
16-12 90 40.82
16-10 89 40.37
16-8 88.5 40.14
16-6 - -
18-16 115 52.16
18-14 114 51.71
18-12 113 51.26
18-10 112 50.8
18-8 - -
20-18 170 77.11
20-16 169 76.66
20-14 168 76.2
20-12 167 75.75
20-10 - -
20-8 - -
22-20 186 84.37
22-18 182 82.55
22-16 173 78.47
22-14 163 73.94
22-12 - -
22-10 - -
24-22 - -
24-20 200 90.72
24-18 195 88.45
24-16 190 86.18
24-14 - -
24-12 - -
24-10 - -
26-24 276 125.19
26-22 272 123.38
26-20 253 114.76
26-18 242 109.77
26-16 - -
26-14 - -
26-12 - -
28-26 299 135.62
28-24 288 130.63
28-22 250 113.4
28-20 264 119.75
30-28 322 146.06
30-26 310 140.61
30-24 299 135.62
30-22 285 129.27
30-20 274 124.28

Note:

WEIGHTS REDUCERS CONCENTRIC/ECCENTRIC SCHEDULE 160

Weights of Buttweld Reducers
NPS LBS KG
3/4-1/2 0.28 0.13
3/4-3/8 0.24 0.11
1-3/4 0.5 0.23
1-1/2 0.5 0.23
1.1/4-1 0.65 0.29
1.1/4-3/4 0.65 0.29
1.1/4-1/2 0.6 0.27
1.1/2-1.1/4 0.95 0.43
1.1/2-1 0.8 0.36
1.1/2-3/4 0.75 0.34
1.1/2-1/2 0.73 0.33
2-1.1/2 1.6 0.73
2-1.1/4 1.5 0.68
2-1 1.5 0.68
2-3/4 1.45 0.66
2.1/2-2 2.5 1.13
2.1/2-1.1/2 2.25 1.02
2.1/2-1.1/4 2.25 1.02
2.1/2-1 2.2 1
3-2.1/2 3.7 1.68
3-2 3.4 1.54
3-1.1/2 3.2 1.45
3-1.1/4 3.1 1.41
3.1/2-3 - -
3.1/2-2.1/2 - -
3.1/2-2 - -
3.1/2-1.1/2 - -
3.1/2-1.1/4 - -
4-3.1/2 - -
4-3 6.4 2.9
4-2.1/2 5.5 2.49
4-2 5.4 2.45
4-1.1/2 5.25 2.38
5-4 12.5 5.67
5-3.1/2 - -
5-3 11 4.99
5-2.1/2 10.5 4.76
5-2 10 4.54
6-5 18.75 8.5
6-4 16.5 7.48
6-3.1/2 - -
6-3 15.5 7.03
6-2.1/2 15 6.8
8-6 31 14.06
8-5 27.2 12.34
8-4 23.5 10.66
8-3.1/2 - -
10-8 57.5 26.08
10-6 54 24.49
10-5 52 23.59
10-4 50 22.68
12-10 96 43.54
12-8 87 39.46
12-6 83 37.65
12-5 80 36.29

Note:

WEIGHTS REDUCERS CONCENTRIC/ECCENTRIC SCHEDULE XXS

Weights of Buttweld Reducers
NPS LBS KG
1-3/4 0.8 0.36
1-1/2 0.75 0.34
1.1/4-1 1 0.45
1.1/4-3/4 1 0.45
1.1/4-1/2 1 0.45
1.1/2-1.1/4 1.5 0.68
1.1/2-1 1.5 0.68
1.1/2-3/4 1.38 0.63
1.1/2-1/2 1.25 0.57
2-1.1/2 2.38 1.08
2-1.1/4 2.25 1.02
2-1 2.15 0.98
2-3/4 2 0.91
2.1/2-2 4 1.81
2.1/2-1.1/2 3.9 1.77
2.1/2-1.1/4 3.6 1.63
2.1/2-1 3.5 1.59
3-2.1/2 6 2.72
3-2 5 2.27
3-1.1/2 4.9 2.22
3-1.1/4 4.75 2.15
3.1/2-3 8 3.63
3.1/2-2.1/2 8 3.63
3.1/2-2 7 3.18
3.1/2-1.1/2 7 3.18
3.1/2-1.1/4 7 3.18
4-3.1/2 9 4.08
4-3 9 4.08
4-2.1/2 8.5 3.86
4-2 8.25 3.74
4-1.1/2 8 3.63
5-4 16 7.26
5-3.1/2 15 6.8
5-3 14.5 6.58
5-2.1/2 13.75 6.24
5-2 14 6.35
6-5 23 10.43
6-4 22 9.98
6-3.1/2 21 9.53
6-3 20 9.07
6-2.1/2 19 8.62
8-6 36 16.33
8-5 35 15.88
8-4 33 14.97
8-3.1/2 32 14.51

Note:

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Buttweld Fitting Weights

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).

Weights in these tables are taken from Hackney Ladish, Inc.

Hackney Ladish

Hackney Ladish, Inc. is one of the largest and most versatile fitting producers in the world. Hackney Ladish, Inc. is headquartered in Dallas, TX and operates 2 facilities containing 380,000 square feet of manufacturing.

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