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PIPE SIZE CHART

Nominal Pipe Size (NPS)

Nominal Pipe Size is a North American set of standards used to designate pipe diameter and thickness.

Pipe size is specified with two non-dimensional numbers: a nominal pipe size (NPS) for inside diameter based on inches, and a schedule (Sched. or Sch.) for wall thickness

Rolled Alloys Pipe Sizing

PIPE SCHEDULES WALL THICKNESS (Inches)

Nominal
O.D. Inches
10s
10
40s & Std
40
80s & E.H.
80
160
1/8"
.405
.049
.049
.068
.068
.095
.095
1/4"
.540
.065
.065
.088
.088
.119
.119
3/8"
.675
.065
.065
.091
.091
.126
.126
1/2"
.840
.083
.083
.109
.109
.147
.147
.187
3/4"
1.050
.083
.083
.113
.113
.154
.154
.218
1"
1.315
.109
.109
.133
.133
.179
.179
.250
1 1/4"
1.660
.109
.109
.140
.140
.191
.191
.250
1 1/2"
1.900
.109
.109
.145
.145
.200
.200
.281
2"
2.375
.109
.109
.154
.154
.218
.218
.343
2 1/2"
2.875
.120
.120
.203
.203
.276
.276
.375
3"
3.500
.120
.120
.216
.216
.300
.300
.437
3 1/2"
4.000
.120
.120
.226
.226
.318
.318
4"
4.500
.120
.120
.237
.237
.337
.337
.531
4 1/2"
5.000
.247
.355
5"
5.563
.134
.134
.258
.258
.375
.375
.625
6"
6.625
.134
.134
.280
.280
.432
.432
.718
7"
7.625
.301
.500
8"
8.625
.148
.148
.322
.322
.500
.500
.906
9"
9.625
.342
.500
10"
10.750
.165
.165
.365
.365
.500
.593
1.125
11"
11.750
.375
.500
12"
12.750
.180
.180
.375
.406
.500
.687
1.312
14"
14.000
.188
.250
.375
.437
.500
.750
1.406
16"
16.000
.188
.250
.375
.500
.500
.843
1.593
18"
18.000
.188
.250
.375
.562
.500
.937
1.781

PIPE DIMENSIONS & WEIGHT

  • Legend
    • Wall Thickness in inches
    • Steel weight in lbs. per ft.

PIPE O.D. IN
SIZE INCHES 5S 5 10S 10 20 30 40s & STD 40 60 80S & E.H. 80 100 120 140 160 DBLE. E.H.




1/8" .405
.035
.1383
.049
.1863
.049
.1863


.068
.2447
.068
.2447

.095
.3145
.095
.3145





1/4" .540
.049
.2570
.065
.3297
.065
.3297


.088
.4248
.088
.4248

.119
.5351
.119
.5351





3/8" .675
.049
.3276
.065
.4235
.065
.4235


.091
.5676
.091
.5676

.126
.7338
.126
.7338





1/2" .840 .065
.5383
.065
.5383
.083
.6710
.083
.6710


.109
.8510
.109
.8510

.147
1.088
.147
1.088



.187
1.304
.294
1.714
3/4" 1.050 .065
.6838
.065
.6838
.083
.8572
.083
.8572


.113
1.131
.113
1.131

.154
1.474
.154
1.474



.218
1.937
.308
2.441
1" 1.315 .065
.8678
.065
.8678
.109
1.404
.109
1.404


.133
1.679
.133
1.679

.179
2.172
.179
2.172



.250
2.844
.358
3.659
1 1/4" 1.660 .065
1.107
.065
1.107
.109
1.806
.109
1.806


.140
2.273
.140
2.273

.191
2.997
.191
2.997



.250
3.765
.382
5.214
1 1/2" 1.900 .065
1.274
.065
1.274
.109
2.085
.109
2.085


.145
2.718
.145
2.718

.200
3.631
.200
3.631



.281
4.859
.400
6.408
2" 2.375 .065
1.604
.065
1.604
.109
2.638
.109
2.638


.154
3.653
.154
3.653

.218
5.022
.218
5.022



.343
7.444
.436
9.029
2 1/2" 2.875 .083
2.475
.083
2.475
.120
3.531
.120
3.531


.203
5.793
.203
5.793

.276
7.661
.276
7.661



.375
10.01
.552
13.70
3" 3.500 .083
3.029
.083
3.029
.120
4.332
.120
4.332


.216
7.576
.216
7.576

.300
10.25
.300
10.25



.437
14.32
.600
18.58
3 1/2" 4.000 .083
3.472
.083
3.472
.120
4.973
.120
4.973


.226
9.109
.226
9.109

.318
12.51
.318
12.51




.636
22.85
4" 4.500 .083
3.915
.083
3.915
.120
5.613
.120
5.613


.237
10.79
.237
10.79
.281
12.66
.337
14.98
.337
14.98

.437
19.01

.531
22.51
.674
27.54
4 1/2" 5.000





.247
12.53


.355
17.61





.710
32.53
5" 5.563 .109
6.349
.109
6.349
.134
7.770
.134
7.770


.258
14.62
.258
14.62

.375
20.78
.375
20.78

.500
27.04

.625
32.96
.750
38.55
6" 6.625 .109
7.585
.109
7.585
.134
9.290
.134
9.290


.280
18.97
.280
18.97

.432
28.57
.432
28.57

.562
36.39

.718
45.3
.864
53.16
7" 7.625





.301
23.57


.500
38.05





.875
63.08
8" 8.625 .109
.109
.148
13.40
.148
13.40
.250
22.36
.277
24.70
.322
28.55
.322
28.55
.406
35.64
.500
43.39
.500
43.39
.593
50.87
.718
60.93
.812
67.76
.906
74.69
.885
72.42
9" 9.625





.342
33.9


.500
48.72






10" 10.750 .134
15.19
.134
15.19
.165
18.65
.165
18.65
.250
28.04
.307
34.24
.365
40.48
.365
40.48
.500
54.74
.500
54.74
.593
64.33
.718
76.93
.843
89.20
1.000
104.1
1.125
115.7

11" 11.750





.375
45.55


.500
60.07






12" 12.750 .156
21.07
.165
22.18
.180
24.17
.180
24.17
.250
33.38
.307
34.24
.365
40.48
.365
40.48
.500
54.74
.500
54.74
.593
64.33
.718
76.93
.843
89.20
1.000
104.1
1.125
115.7

14" 14.000 .156
23.07

.188
27.73
.250
36.71
.312
45.38
.375
54.57
.375
54.57
.437
63.37
.593
84.91
.500
72.09
.750
106.1
.937
130.7
1.093
150.7
1.250
170.2
1.406
189.1

16" 16.000 .165
27.90

.188
31.75
.250
42.05
.312
52.36
.375
62.58
.375
62.58
.500
82.77
.656
107.5
.500
82.77
.843
136.5
1.031
164.8
1.218
192.3
1.427
223.5
1.593
245.1

18" 18.00 .165
31.43

.188
35.76
.250
47.39
.312
59.03
.437
82.06
.375
70.59
.562
104.2
.750
138.2
.500
93.45
.937
170.8
1.156
208.0
1.375
244.1
1.562
274.2
1.781
308.5

20" 20.000 .188
39.78

.218
46.05
.250
52.73
.375
78.6
.500
104.1
.375
78.6
.593
122.9
.812
166.4
.500
104.1
1.031
208.9
1.280
256.1
1.500
296.4
1.750
341.1
1.968
379.0

22" 22.000 .188
43.8

.218
50.71
.250
58.07
.375
86.61
.500
114.81
.375
86.61

.875
197.41
.500
114.81
1.125
250.81
1.375
302.88
1.625
353.61
1.875
403.0
2.125
451.06

24" 24.000 .218
55.37

.250
63.41
.250
63.41
.375
94.62
.562
140.8
.375
94.62
.687
171.2
.968
238.1
.500
125.5
1.218
296.4
1.531
367.4
1.812
429.4
2.062
483.1
2.344
542.13

26" 26.000


.312
85.60
.500
136.17

.375
102.63


.500
136.17






28" 28.000


.312
92.26
.500
146.85
.625
182.73
.375
110.64









30" 30.000 .250
79.43

.312
98.93
.312
98.93
.500
157.53
.625
196.08
.375
118.65


.500
157.53






32" 32.000


.312
105.59
.500
168.21
.625
209.43
.375
126.66
.688
230.08

.500
168.21






34" 34.000


.312
112.25
.500
178.89
.625
222.78
.375
134.667
.688
244.77








36" 36.000


.312
118.92

.625
236.13
.375
142.68
.750
262.35

.500
189.57