A pipe schedule chart is used to verify the dimension of the carbon steel and stainless steel pipe used in process industries. These charts covered sizes and schedules that give you the thickness of the pipe. ASME B36.10 and ASME B36.19 covered the dimensions of the Carbon steel and Stainless steel pipe respectively. But do you know what is Pipe Schedule?

What is Pipe Schedule?

The pipe schedule is the way pipe wall thickness is mentioned. To simplify the ordering of the pipe ASME committee has developed Schedule Number which is based on modified Barlow’s wall thickness formula.

Definition of Schedule Number: The schedule number indicates an approximate value of the expression 1000 x P/S where P is the service pressure and S is the allowable stress, both expressed in pounds per square inch.

You can see the pipe schedule calculation formula as below;

Schedule number = P/S

  • is the service pressure in (psi)
  • is the allowable stress in (psi)

So, what does schedule 40 means?

Schedule 40 is nothing but a pipe thickness designator. In simple word you can say that for a given material, schedule 40 pipe can withstand a certain amount of pressure.

4 sch 80 pipe schedule

Pipe Schedule Chart for Carbon Steel Pipe in Inches

Schedule 5, Schedule 10 and Schedule 30

Nominal Pipe Schedule Chart for Sch5, 10 and 30 in Inches
Nominal Pipe Size in Inch OD in Inch 5 10 20 30
1/8 0.405 0.049
1/4 0.54 0.065
3/8 0.675 0.065 0.073
1/2 0.84 0.065 0.083 0.095
3/4 1.05 0.065 0.083 0.095
1 1.315 0.065 0.109 0.114
1 1/4 1.66 0.065 0.109 0.117
1 1/2 1.9 0.065 0.109 0.125
2 2.375 0.065 0.109 0.125
2 1/2 2.875 0.083 0.12 0.188
3 3.5 0.083 0.12 0.188
3 1/2 4 0.083 0.12 0.188
4 4.5 0.083 0.12 0.188
5 5.563 0.109 0.134
6 6.625 0.109 0.134
8 8.625 0.109 0.148 0.25 0.277
10 10.75 0.134 0.165 0.25 0.307
12 12.75 0.156 0.18 0.25 0.33
14 14 0.156 0.25 0.312 0.375
16 16 0.165 0.25 0.312 0.375
18 18 0.165 0.25 0.312 0.438
20 20 0.188 0.25 0.375 0.5
22 22 0.188 0.25 0.375 0.5
24 24 0.218 0.25 0.375 0.562
26 26 0.312 0.5
28 28 0.312 0.5 0.625
30 30 0.25 0.312 0.5 0.625
32 32 0.312 0.5 0.625
34 34 0.312 0.5 0.625
36 36 0.312 0.5 0.625
ASME B36.10M-2015: Welded and Seamless Wrought Steel Pipe
Don’t get confused between 3 1/2 inch nominal with 3.5 inch OD, 4″ nominal with 4.000″ OD

Schedule 40, Schedule STD, Schedule 60, Schedule 80 and Schedule XS

Nominal Pipe Schedule Chart for Sch 40, STD, 60, 80 & Xs in Inches
Nominal Pipe Size in Inch OD in Inch 40 Std 60 80 XS
1/8 0.405 0.068 0.068 0.095 0.095
1/4 0.54 0.088 0.088 0.119 0.119
3/8 0.675 0.091 0.091 0.126 0.126
1/2 0.84 0.109 0.109 0.147 0.147
3/4 1.05 0.113 0.113 0.154 0.154
1 1.315 0.133 0.133 0.179 0.179
1 1/4 1.66 0.14 0.14 0.191 0.191
1 1/2 1.9 0.145 0.145 0.2 0.2
2 2.375 0.154 0.154 0.218 0.218
2 1/2 2.875 0.203 0.203 0.276 0.276
3 3.5 0.216 0.216 0.3 0.3
3 1/2 4 0.226 0.226 0.318 0.318
4 4.5 0.237 0.237 0.337 0.337
5 5.563 0.258 0.258 0.375 0.375
6 6.625 0.28 0.28 0.432 0.432
8 8.625 0.322 0.322 0.406 0.5 0.5
10 10.75 0.365 0.365 0.5 0.594 0.5
12 12.75 0.406 0.375 0.562 0.688 0.5
14 14 0.438 0.375 0.594 0.75 0.5
16 16 0.5 0.375 0.656 0.844 0.5
18 18 0.562 0.375 0.75 0.938 0.5
20 20 0.594 0.375 0.812 1.031 0.5
22 22 0.375 0.875 1.125 0.5
24 24 0.688 0.375 0.969 1.219 0.5
26 26 0.375 0.5
28 28 0.375 0.5
30 30 0.375 0.5
32 32 0.688 0.375 0.5
34 34 0.688 0.375 0.5
36 36 0.75 0.375 0.5
ASME B36.10M-2015: Welded and Seamless Wrought Steel Pipe
Don’t get confused between 3 1/2 inch nominal with 3.5 inch OD, 4″ nominal with 4.000″ OD

Schedule 100, Schedule 120, Schedule 140, Schedule 160 and Schedule XXS

Nominal Pipe Schedule Chart for Sch 100, 120,140, 160 & XXS in Inches
Nominal Pipe Size in Inch OD in Inch 100 120 140 160 XXS
1/2 0.84 0.188 0.294
3/4 1.05 0.219 0.308
1 1.315 0.25 0.358
1 1/4 1.66 0.25 0.382
1 1/2 1.9 0.281 0.4
2 2.375 0.344 0.436
2 1/2 2.875 0.375 0.552
3 3.5 0.438 0.6
3 1/2 4 0.636
4 4.5 0.438 0.531 0.674
5 5.563 0.5 0.625 0.75
6 6.625 0.562 0.719 0.864
8 8.625 0.594 0.719 0.812 0.906 0.875
10 10.75 0.719 0.844 1 1.125 1
12 12.75 0.844 1 1.125 1.312 1
14 14 0.938 1.094 1.25 1.406
16 16 1.031 1.219 1.438 1.594
18 18 1.156 1.375 1.562 1.781
20 20 1.281 1.5 1.75 1.969
22 22 1.375 1.625 1.875 2.125
24 24 1.531 1.812 2.062 2.344
ASME B36.10M-2015: Welded and Seamless Wrought Steel Pipe
Don’t get confused between 3 1/2 inch nominal with 3.5 inch OD, 4″ nominal with 4.000″ OD

Pipe Schedule Chart for Stainless Steel Pipe in Inches

Nominal Pipe Schedule Chart for SS Pipes with Sch 5s, 10s, 40s and 80s in Inches
Nominal Pipe Size in Inch OD in Inch 5S 10S 40S 80S
1/8 0.405 0.049 0.068 0.095
1/4 0.54 0.065 0.088 0.119
3/8 0.675 0.065 0.091 0.126
1/2 0.84 0.065 0.083 0.109 0.147
3/4 1.05 0.065 0.083 0.113 0.154
1 1.315 0.065 0.109 0.133 0.179
1 1/4 1.66 0.065 0.109 0.14 0.191
1 1/2 1.9 0.065 0.109 0.145 0.2
2 2.375 0.065 0.109 0.154 0.218
2 1/2 2.875 0.083 0.12 0.203 0.276
3 3.5 0.083 0.12 0.216 0.3
3 1/2 4 0.083 0.12 0.226 0.318
4 4.5 0.083 0.12 0.237 0.337
5 5.563 0.109 0.134 0.258 0.375
6 6.625 0.109 0.134 0.28 0.432
8 8.625 0.109 0.148 0.322 0.5
10 10.75 0.134 0.165 0.365 0.5
12 12.75 0.156 0.18 0.375 0.5
14 14 0.156 0.188 0.375 0.5
16 16 0.165 0.188 0.375 0.5
18 18 0.165 0.188 0.375 0.5
20 20 0.188 0.218 0.375 0.5
22 22 0.188 0.218
24 24 0.218 0.25 0.375 0.5
30 30 0.25 0.312
ASME B36.19M-2004: Stainless Steel Pipe (For 5S,10S,40S and 80S)
Don’t get confused between 3 1/2 inch nominal with 3.5 inch OD, 4″ nominal with 4.000″ OD

Pipe Schedule Chart for Carbon Steel Pipe in Millimeter

Schedule 5, Schedule 10 and Schedule 30

Nominal Pipe Schedule Chart for Sch 5, 10, 20 and 30 in Millimeter (mm)
DN in mm OD 5 10 20 30
6 10.3 1.24
8 13.7 1.65
10 17.1 1.65 1.85
15 21.3 1.65 2.11 2.41
20 26.7 1.65 2.11 2.41
25 33.4 1.65 2.77 2.9
32 42.2 1.65 2.77 2.97
40 48.3 1.65 2.77 3.18
50 60.3 1.65 2.77 3.18
65 73 2.11 3.05 4.78
80 88.9 2.11 3.05 4.78
90 101.6 2.11 3.05 4.78
100 114.3 2.11 3.05 4.78
125 141.3 2.77 3.4
150 168.3 2.77 3.4
200 219.1 2.77 3.76 6.35 7.04
250 273 3.4 4.19 6.35 7.8
300 323.8 3.96 4.57 6.35 8.38
350 355.6 3.96 6.35 7.92 9.53
400 406.4 4.19 6.35 7.92 9.53
450 457 4.19 6.35 7.92 11.13
500 508 4.78 6.35 9.53 12.7
550 559 4.78 6.35 9.53 12.7
600 610 5.54 6.35 9.53 14.27
650 660 7.92 12.7
700 711 7.92 12.7 15.88
750 762 6.35 7.92 12.7 15.88
800 813 7.92 12.7 15.88
850 864 7.92 12.7 15.88
900 914 7.92 12.7 15.88
ASME B36.10M-2015: Welded and Seamless Wrought Steel Pipe

Schedule 40, Schedule STD, Schedule 60, Schedule 80 and Schedule XS

Nominal Pipe Schedule Chart for Sch 40, Std, 60, 80 and XS in Millimeter (mm)
DN in mm OD 40 Std 60 80 XS
6 10.3 1.73 1.73 2.41 2.41
8 13.7 2.24 2.24 3.02 3.02
10 17.1 2.31 2.31 3.2 3.2
15 21.3 2.77 2.77 3.73 3.73
20 26.7 2.87 2.87 3.91 3.91
25 33.4 3.38 3.38 4.55 4.55
32 42.2 3.56 3.56 4.85 4.85
40 48.3 3.68 3.68 5.08 5.08
50 60.3 3.91 3.91 5.54 5.54
65 73 5.16 5.16 7.01 7.01
80 88.9 5.49 5.49 7.62 7.62
90 101.6 5.74 5.74 8.08 8.08
100 114.3 6.02 6.02 8.56 8.56
125 141.3 6.55 6.55 9.53 9.53
150 168.3 7.11 7.11 10.97 10.97
200 219.1 8.18 8.18 10.31 12.7 12.7
250 273 9.27 9.27 12.7 15.09 12.7
300 323.8 10.31 9.53 14.27 17.48 12.7
350 355.6 11.13 9.53 15.09 19.05 12.7
400 406.4 12.7 9.53 16.66 21.44 12.7
450 457 14.27 9.53 19.05 23.83 12.7
500 508 15.09 9.53 20.62 26.19 12.7
550 559 9.53 22.23 28.58 12.7
600 610 17.48 9.53 24.61 30.96 12.7
650 660 9.53 12.7
700 711 9.53 12.7
750 762 9.53 12.7
800 813 17.48 9.53 12.7
850 864 17.48 9.53 12.7
900 914 19.05 9.53 12.7
950 965 9.53 12.7
1000 1016 9.53 12.7
1050 1067 9.53 12.7
1100 1118 9.53 12.7
1150 1168 9.53 12.7
1200 1219 9.53 12.7
ASME B36.10M-2015: Welded and Seamless Wrought Steel Pipe

Schedule 100, Schedule 120, Schedule 140, Schedule 160 and Schedule XXS

Nominal Pipe Schedule Chart for Sch 100, 120, 140, 160 and XXS in Millimeter (mm)
DN in mm OD 100 120 140 160 XXS
15 21.3 4.78 7.47
20 26.7 5.56 7.82
25 33.4 6.35 9.09
32 42.2 6.35 9.7
40 48.3 7.14 10.16
50 60.3 8.74 11.07
65 73 9.53 14.02
80 88.9 11.13 15.24
90 101.6 16.15
100 114.3 11.13 13.49 17.12
125 141.3 12.7 15.88 19.05
150 168.3 14.27 18.26 21.95
200 219.1 15.09 18.26 20.62 23.01 22.23
250 273 18.26 21.44 25.4 28.58 25.4
300 323.8 21.44 25.4 28.58 33.32 25.4
350 355.6 23.83 27.79 31.75 35.71
400 406.4 26.19 30.96 36.53 40.49
450 457 29.36 34.93 39.67 45.24
500 508 32.54 38.1 44.45 50.01
550 559 34.93 41.28 47.63 53.98
600 610 38.89 46.02 52.37 59.54
ASME B36.10M-2015: Welded and Seamless Wrought Steel Pipe

Pipe Schedule Chart for Stainless Steel Pipe in Millimeter

Nominal Pipe Schedule Chart for SS Pipe Sch 5s, 10s, 40s and 80s in Millimeter (mm)
DN in mm OD 5s 10s 40s 80s
6 10.3 1.24 1.73 2.41
8 13.7 1.65 2.24 3.02
10 17.1 1.65 2.31 3.2
15 21.3 1.65 2.11 2.77 3.73
20 26.7 1.65 2.11 2.87 3.91
25 33.4 1.65 2.77 3.38 4.55
32 42.2 1.65 2.77 3.56 4.85
40 48.3 1.65 2.77 3.68 5.08
50 60.3 1.65 2.77 3.91 5.54
65 73 2.11 3.05 5.16 7.01
80 88.9 2.11 3.05 5.49 7.62
90 101.6 2.11 3.05 5.74 8.08
100 114.3 2.11 3.05 6.02 8.56
125 141.3 2.77 3.4 6.55 9.53
150 168.3 2.77 3.4 7.11 10.97
200 219.1 2.77 3.76 8.18 12.7
250 273 3.4 4.19 9.27 12.7
300 323.8 3.96 4.57 9.53 12.7
350 355.6 3.96 4.78 9.53 12.7
400 406.4 4.19 4.78 9.53 12.7
450 457 4.19 4.78 9.53 12.7
500 508 4.78 5.54 9.53 12.7
550 559 4.78 5.54
600 610 5.54 6.35 9.53 12.7
750 762 6.35 7.92
ASME B36.19M-2004: Stainless Steel Pipe (For 5S,10S,40S and 80S)

Click on the image below to download Free Pipe Schedule Charts 

Chart in MM

nominal pipe size chart In mm

Chart in Inch

nominal pipe size chart In Inch

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