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 (diam├Ętre 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 60 80s & E.H. 80 100 120 140 160 Dbl. E.H.
(XXH)
1/8 .405   .035  .049  .049    .068  .068   .095  .095   
1/4 .540   .049  .065  .065    .088  .088    .119  .119   
3/8 .675   .049  .065  .065    .091  .091    .126  .126   
1/2 .840 .065  .065  .083  .083    .109  .109    .147  .147    .187  .294 
3/4 1.050 .065  .065  .083  .083    .113  .113    .154  .154    .218  .308 
1 1.315 .065  .065  .109  .109    .133  .133    .179  .179    .250  .358 
1 1/4 1.660 .065  .065  .109  .109    .140  .140    .191  .191    .250  .382 
1 1/2 1.900 .065  .065  .109  .109    .145  .145    .200  .200    .281  .400 
2 2.375 .065  .065  .109  .109    .154  .154    .218  .218    .343  .436 
2 1/2 2.875 .083  .083  .120  .120    .203  .203    .276  .276    .375  .552 
3 3.500 .083  .083  .120  .120    .216  .216    .300  .300    .437  .600 
3 1/2 4.000 .083  .083  .120  .120    .226  .226    .318  .318    .636 
4 4.500 .083  .083  .120  .120    .237  .237  .281  .337  .337    .437    .531  .674 
4 1/2 5.000   .247    .355    .710 
5 5.563 .109  .109  .134  .134    .258  .258    .375  .375    .500    .625  .750 
6 6.625 .109  .109  .134  .134    .280  .280    .432  .432    .562    .718  .864 
7 7.625   .301    .500    .875 
8 8.625 .109  .109  .148  .148  .250  .277  .322  .322  .406  .500  .500  .593  .718  .812  .906  .875 
9 9.625   .342    .500   
10 10.750 .134  .134  .165  .165  .250  .307  .365  .365  .500  .500  .593  .718  .843  1.000  1.125   
11 11.750   .375    .500   
12 12.750 .156  .165  .180  .180  .250  .330  .375  .406  .562  .500  .687  .843  1.000  1.125  1.312   
14 14.000 .156    .188  .250  .312  .375  .375  .437  .593  .500  .750  .937  1.093  1.250  1.406   
16 16.000 .165    .188  .250  .312  .375  .375  .500  .656  .500  .843  1.031  1.218  1.437  1.593   
18 18.000 .165    .188  .250  .312  .437  .375  .562  .750  .500  .937  1.156  1.375  1.562  1.781   
20 20.000 .188    .218  .250  .375  .500  .375  .593  .812  .500  1.031  1.280  1.500  1.750  1.968   
24 24.000 .218    .250  .250  .375  .562  .375  .687  .968  .500  1.218  1.531  1.812  2.062  2.343   
26 26.000   .312  .500    .375    .500   
28 28.000   312  .500  .625  .375   
30 30.000 .250    .312  .312  .500  .625  .375    .500   
32 32.000   .312  .500  .625  .375  .688    .500   
34 34.00   .312  .500  .625  .375  .688   
36 36.000   .312    .625  .375  .750    .500   
42 42.000     .375      .500 
48 48.000         .375    .500 

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