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Schedule 40 ASTM D 1785-76

Nominal Pipe
Mean Outside
Diameter
Mean Inside
Diameter
Mean Wall
Thickness
Size Inch
Inch
mm
Inch
mm
Inch
mm
1/2
0.840
21.3
0.622
15.8
0.109
2.8
3/4
1.050
26.7
0.824
20.9
0.113
2.9
1
1.315
33.4
1.049
26.6
0.133
3.4
1-1/4
1.660
42.2
1.380
35.0
0.140
3.6
1-1/2
1.900
48.3
1.610
40.9
0.145
3.7
2
2.375
60.3
2.067
52.5
0.154
3.9
2-1/2
2.875
73.0
2.469
62.7
0.203
5.2
3
3.500
88.9
3.068
77.9
0.216
5.5
4
4.500
114.3
4.026
102.3
0.237
6.0
6
6.625
168.3
6.065
154.0
0.280
7.1
8
8.625
219.1
7.981
202.7
0.322
8.2


Schedule 80 ASTM D 1785 - 76

Nominal Pipe
Mean Outside
Diameter
Mean Inside
Diameter
Mean Wall
Thickness
Size Inch
Inch
mm
Inch
mm
Inch
mm
1/2
0.840
21.3
0.546
13.9
0.147
3.7
3/4
1.050
26.7
0.742
18.8
0.154
3.9
1
1.315
33.4
0.957
24.3
0.179
4.5
1-1/4
1.660
42.2
1.278
32.5
0.191
4.8
1-1/2
1.900
48.3
1.500
38.1
0.200
5.1
2
2.375
60.3
1.939
49.2
0.218
5.5
2-1/2
2.875
73.0
2.323
59.0
0.276
7.0
3
3.500
88.9
2.900
73.7
0.300
7.6
4
4.500
114.3
3.826
97.2
0.337
8.6
6
6.625
168.3
5.761
146.3
0.432
11.0
8
8.625
219.1
7.625
193.7
0.500
12.7


Class 100 (SDR-41) 100 psi rating ASTM D 2241

Nominal Pipe
Mean Outside
Diameter
Mean Inside
Diameter
Mean Wall
Thickness
Size Inch
Inch
mm
Inch
mm
Inch
mm
4
4.500
114.3
4.280
108.7
0.110
2.8
6
6.625
168.3
6.301
160.0
0.162
4.1
8
8.625
219.1
8.205
208.4
0.210
5.3
10
10.750
273.1
10.189
258.8
0.262
6.6
12
12.750
323.9
12.084
306.9
0.311
7.9


Class 125 (SDR-32.5) 125 psi rating ASTM D 2241

Nominal Pipe
Mean Outside
Diameter
Mean Inside
Diameter
Mean Wall
Thickness
Size Inch
Inch
mm
Inch
mm
Inch
mm
3
3.500
88.9
3.284
83.4
0.108
2.7
4
4.500
114.3
4.224
107.3
0.138
3.5
6
6.625
168.6
6.217
157.9
0.204
5.2
8
8.625
219.1
8.095
205.6
0.265
6.7
10
10.750
273.1
10.042
255.1
0.331
8.4
12
12.75
232.9
11.911
302.5
0.392
9.9


Class 160 (SDR-26) 160 psi rating ASTM D 2241

Nominal Pipe
Mean Outside
Diameter
Mean Inside
Diameter
Mean Wall
Thickness
Size Inch
Inch
mm
Inch
mm
Inch
mm
1-1/4
1.660
42.2
1.532
38.9
0.064
1.6
1-1/2
1.900
48.3
1.754
44.5
0.073
1.9
2
2.375
60.3
1.193
55.7
0.091
2.3
2-1/2
2.875
73.0
2.655
67.4
0.110
2.8
3
3.500
88.9
3.230
82.0
0.135
3.4
4
4.500
114.3
4.154
105.5
0.173
4.4
6
6.625
168.3
6.115
155.3
0.225
6.5
8
8.625
219.1
7.961
202.2
0.332
8.4
10
10.750
273.1
9.866
251.0
0.413
10.5
12
12.75
323.9
11.701
297.2
0.490
12.5


Class 200 (SDR-21) 200 psi rating ASTM D 2241

Nominal Pipe
Mean Outside
Diameter
Mean Inside
Diameter
Mean Wall
Thickness
Size Inch
Inch
mm
Inch
mm
Inch
mm
3/4
1.050
26.7
0.930
23.6
0.060
1.5
1
1.315
33.4
1.189
30.2
0.063
1.6
1-1/4
1.660
42.2
1.502
38.1
0.079
2.0
1-1/2
1.900
48.3
1.720
43.7
0.090
2.3
2
2.375
60.3
2.149
54.6
0.113
2.9
2-1/2
2.875
73.0
2.601
66.1
0.137
3.5
3
3.500
88.9
3.166
80.4
0.167
4.2
4
4.500
114.3
4.072
103.4
0.214
5.4
6
6.625
168.3
4.993
126.8
0.316
8.0
8
8.625
2.191
5.949
51.0
0.410
10.0
10
10.750
273.1
7.748
196.8
0.511
12.9
12
17.750
323.9
11.538
293.1
0.606
15.4


Class 315 (SDR-13.5) 315 psi rating ASTM D 2241

Nominal Pipe
Mean Outside
Diameter
Mean Inside
Diameter
Mean Wall
Thickness
Size Inch
Inch
mm
Inch
mm
Inch
mm
1/2
0.840
21.3
0.716
18.2
0.062
1.6
3/4
1.050
26.7
0.894
22.7
0.078
2.0
1
1.315
33.4
1.121
28.5
0.097
2.5
1-1/4
1.660
42.2
1.414
35.9
0.123
3.1
1-1/2
1.900
48.3
1.618
41.1
0.141
3.6
2
2.375
60.3
2.023
51.4
0.176
4.5
2-1/2
2.875
73.0
2.449
62.2
0.213
5.4
3
3.500
88.9
2.982
75.7
0.259
6.6
4
4.500
114.3
3.834
97.4
0.333
8.5



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