Standard Pipe Schedules Pipe Sizes Chart Table Data

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The following chart gives standard pipe schedule or pipes sizes as given by ANSI / ASME B36.10M and API 5L . Data given in based on the NPS Tables given by ANSI B36.10M and includes Pipe wall thickness, outside diameter, nominal diameter.

ANSI - American National Standards Institute
ASME - American Society of Mechanical Engineers
API = American Petroleum Institute
NPS = Nominal Pipe Size
O.D. =. Outside Diameter
E.H. = Extra Heavy
Dbl. = Double
Std. = Standard

Pipe size is specified by two designations: a nominal pipe size (NPS) for diameter based on inches, and a schedule (Sched. or Sch.) for wall thickness. NPS is often incorrectly called National Pipe Size, due to confusion with national pipe thread (NPT).

The European (ISO) designation equivalent to NPS is DN (diamètre nominal/nominal diameter/Durchmesser nach Norm), in which sizes are measured in millimetres. The term NB (nominal bore) is also frequently used interchangeably with NPS

Standard Pipe Schedules (40, 80, 160, etc..) Related Resources --> Bottom of this webpage

Nom.

O.D. Inches
PIPE SCHEDULES
WALL THICKNESS (
Inches)
5s 5 10s 10 20 30 40s & Std 40
1/8
.405
.035 .049 .049 .068 .068
1/4
.540
.049 .065 .065 .088 .088
3/8
.675
.049 .065 .065 .091 .091
1/2
.840
.065 .065 .083 .083 .109 .109
3/4
1.050
.065 .065 .083 .083 .113 .113
1
1.315
.065 .065 .109 .109 .133 .133
1 1/4
1.660
.065 .065 .109 .109 .140 .140
1 1/2
1.900
.065 .065 .109 .109 .145 .145
2
2.375
.065 .065 .109 .109 .154 .154
2 1/2
2.875
.083 .083 .120 .120 .203 .203
3
3.500
.083 .083 .120 .120 .216 .216
3 1/2
4.000
.083 .083 .120 .120 .226 .226
4
4.500
.083 .083 .120 .120 .237 .237
4 1/2
5.000
.247
5
5.563
.109 .109 .134 .134 .258 .258
6
6.625
.109 .109 .134 .134 .280 .280
7
7.625
.301
8
8.625
.109 .109 .148 .148 .250 .277 .322 .322
9
9.625
.342
10
10.750
.134 .134 .165 .165 .250 .307 .365 .365
11
11.750
.375
12
12.750
.156 .165 .180 .180 .250 .330 .375 .406
14
14.000
.156 .188 .250 .312 .375 .375 .437
16
16.000
.165 .188 .250 .312 .375 .375 .500
18
18.000
.165 .188 .250 .312 .437 .375 .562
20
20.000
.188 .218 .250 .375 .500 .375 .593
24
24.000
.218 .250 .250 .375 .562 .375 .687
26
26.000
.312 .500 .375
28
28.000
312 .500 .625 .375
30
30.000
.250 .312 .312 .500 .625 .375
32
32.000
.312 .500 .625 .375 .688
34
34.00
.312 .500 .625 .375 .688
36
36.000
.312 .625 .375 .750
42
42.000
.375
48
48.000
.375

Nom.

O.D. Inches
PIPE SCHEDULES
WALL THICKNESS (
Inches)
60 80s & E.H. 80 100 120 140 160 Dbl. E.H.
(XXH)
1/8
.405
.095 .095
1/4
.540
.119 .119
3/8
.675
.126 .126
1/2
.840
.147 .147 .187 .294
3/4
1.050
.154 .154 .218 .308
1
1.315
.179 .179 .250 .358
1 1/4
1.660
.191 .191 .250 .382
1 1/2
1.900
.200 .200 .281 .400
2
2.375
.218 .218 .343 .436
2 1/2
2.875
.276 .276 .375 .552
3
3.500
.300 .300 .437 .600
3 1/2
4.000
.318 .318 .636
4
4.500
.281 .337 .337 .437 .531 .674
4 1/2
5.000
.355 .710
5
5.563
.375 .375 .500 .625 .750
6
6.625
.432 .432 .562 .718 .864
7
7.625
.500 .875
8
8.625
.406 .500 .500 .593 .718 .812 .906 .875
9
9.625
.500
10
10.750
.500 .500 .593 .718 .843 1.000 1.125
11
11.750
.500
12
12.750
.562 .500 .687 .843 1.000 1.125 1.312
14
14.000
.593 .500 .750 .937 1.093 1.250 1.406
16
16.000
.656 .500 .843 1.031 1.218 1.437 1.593
18
18.000
.750 .500 .937 1.156 1.375 1.562 1.781
20
20.000
.812 .500 1.031 1.280 1.500 1.750 1.968
24
24.000
.968 .500 1.218 1.531 1.812 2.062 2.343
26
26.000
.500
28
28.000
30
30.000
.500
32
32.000
.500
34
34.00
36
36.000
.500
42
42.000
.500
48
48.000
.500

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