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 InchOD in Inch5102030
1/80.4050.049
1/40.540.065
3/80.6750.0650.073
1/20.840.0650.0830.095
3/41.050.0650.0830.095
11.3150.0650.1090.114
1 1/41.660.0650.1090.117
1 1/21.90.0650.1090.125
22.3750.0650.1090.125
2 1/22.8750.0830.120.188
33.50.0830.120.188
3 1/240.0830.120.188
44.50.0830.120.188
55.5630.1090.134
66.6250.1090.134
88.6250.1090.1480.250.277
1010.750.1340.1650.250.307
1212.750.1560.180.250.33
14140.1560.250.3120.375
16160.1650.250.3120.375
18180.1650.250.3120.438
20200.1880.250.3750.5
22220.1880.250.3750.5
24240.2180.250.3750.562
26260.3120.5
28280.3120.50.625
30300.250.3120.50.625
32320.3120.50.625
34340.3120.50.625
36360.3120.50.625
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
Piping Courses

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 InchOD in Inch40Std6080XS
1/80.4050.0680.0680.0950.095
1/40.540.0880.0880.1190.119
3/80.6750.0910.0910.1260.126
1/20.840.1090.1090.1470.147
3/41.050.1130.1130.1540.154
11.3150.1330.1330.1790.179
1 1/41.660.140.140.1910.191
1 1/21.90.1450.1450.20.2
22.3750.1540.1540.2180.218
2 1/22.8750.2030.2030.2760.276
33.50.2160.2160.30.3
3 1/240.2260.2260.3180.318
44.50.2370.2370.3370.337
55.5630.2580.2580.3750.375
66.6250.280.280.4320.432
88.6250.3220.3220.4060.50.5
1010.750.3650.3650.50.5940.5
1212.750.4060.3750.5620.6880.5
14140.4380.3750.5940.750.5
16160.50.3750.6560.8440.5
18180.5620.3750.750.9380.5
20200.5940.3750.8121.0310.5
22220.3750.8751.1250.5
24240.6880.3750.9691.2190.5
26260.3750.5
28280.3750.5
30300.3750.5
32320.6880.3750.5
34340.6880.3750.5
36360.750.3750.5
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 InchOD in Inch100120140160XXS
1/20.840.1880.294
3/41.050.2190.308
11.3150.250.358
1 1/41.660.250.382
1 1/21.90.2810.4
22.3750.3440.436
2 1/22.8750.3750.552
33.50.4380.6
3 1/240.636
44.50.4380.5310.674
55.5630.50.6250.75
66.6250.5620.7190.864
88.6250.5940.7190.8120.9060.875
1010.750.7190.84411.1251
1212.750.84411.1251.3121
14140.9381.0941.251.406
16161.0311.2191.4381.594
18181.1561.3751.5621.781
20201.2811.51.751.969
22221.3751.6251.8752.125
24241.5311.8122.0622.344
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 InchOD in Inch5S10S40S80S
1/80.4050.0490.0680.095
1/40.540.0650.0880.119
3/80.6750.0650.0910.126
1/20.840.0650.0830.1090.147
3/41.050.0650.0830.1130.154
11.3150.0650.1090.1330.179
1 1/41.660.0650.1090.140.191
1 1/21.90.0650.1090.1450.2
22.3750.0650.1090.1540.218
2 1/22.8750.0830.120.2030.276
33.50.0830.120.2160.3
3 1/240.0830.120.2260.318
44.50.0830.120.2370.337
55.5630.1090.1340.2580.375
66.6250.1090.1340.280.432
88.6250.1090.1480.3220.5
1010.750.1340.1650.3650.5
1212.750.1560.180.3750.5
14140.1560.1880.3750.5
16160.1650.1880.3750.5
18180.1650.1880.3750.5
20200.1880.2180.3750.5
22220.1880.218
24240.2180.250.3750.5
30300.250.312
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 mmOD5102030
610.31.24
813.71.65
1017.11.651.85
1521.31.652.112.41
2026.71.652.112.41
2533.41.652.772.9
3242.21.652.772.97
4048.31.652.773.18
5060.31.652.773.18
65732.113.054.78
8088.92.113.054.78
90101.62.113.054.78
100114.32.113.054.78
125141.32.773.4
150168.32.773.4
200219.12.773.766.357.04
2502733.44.196.357.8
300323.83.964.576.358.38
350355.63.966.357.929.53
400406.44.196.357.929.53
4504574.196.357.9211.13
5005084.786.359.5312.7
5505594.786.359.5312.7
6006105.546.359.5314.27
6506607.9212.7
7007117.9212.715.88
7507626.357.9212.715.88
8008137.9212.715.88
8508647.9212.715.88
9009147.9212.715.88
ASME B36.10M-2015: Welded and Seamless Wrought Steel Pipe
Piping Courses

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 mmOD40Std6080XS
610.31.731.732.412.41
813.72.242.243.023.02
1017.12.312.313.23.2
1521.32.772.773.733.73
2026.72.872.873.913.91
2533.43.383.384.554.55
3242.23.563.564.854.85
4048.33.683.685.085.08
5060.33.913.915.545.54
65735.165.167.017.01
8088.95.495.497.627.62
90101.65.745.748.088.08
100114.36.026.028.568.56
125141.36.556.559.539.53
150168.37.117.1110.9710.97
200219.18.188.1810.3112.712.7
2502739.279.2712.715.0912.7
300323.810.319.5314.2717.4812.7
350355.611.139.5315.0919.0512.7
400406.412.79.5316.6621.4412.7
45045714.279.5319.0523.8312.7
50050815.099.5320.6226.1912.7
5505599.5322.2328.5812.7
60061017.489.5324.6130.9612.7
6506609.5312.7
7007119.5312.7
7507629.5312.7
80081317.489.5312.7
85086417.489.5312.7
90091419.059.5312.7
9509659.5312.7
100010169.5312.7
105010679.5312.7
110011189.5312.7
115011689.5312.7
120012199.5312.7
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 mmOD100120140160XXS
1521.34.787.47
2026.75.567.82
2533.46.359.09
3242.26.359.7
4048.37.1410.16
5060.38.7411.07
65739.5314.02
8088.911.1315.24
90101.616.15
100114.311.1313.4917.12
125141.312.715.8819.05
150168.314.2718.2621.95
200219.115.0918.2620.6223.0122.23
25027318.2621.4425.428.5825.4
300323.821.4425.428.5833.3225.4
350355.623.8327.7931.7535.71
400406.426.1930.9636.5340.49
45045729.3634.9339.6745.24
50050832.5438.144.4550.01
55055934.9341.2847.6353.98
60061038.8946.0252.3759.54
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 mmOD5s10s40s80s
610.31.241.732.41
813.71.652.243.02
1017.11.652.313.2
1521.31.652.112.773.73
2026.71.652.112.873.91
2533.41.652.773.384.55
3242.21.652.773.564.85
4048.31.652.773.685.08
5060.31.652.773.915.54
65732.113.055.167.01
8088.92.113.055.497.62
90101.62.113.055.748.08
100114.32.113.056.028.56
125141.32.773.46.559.53
150168.32.773.47.1110.97
200219.12.773.768.1812.7
2502733.44.199.2712.7
300323.83.964.579.5312.7
350355.63.964.789.5312.7
400406.44.194.789.5312.7
4504574.194.789.5312.7
5005084.785.549.5312.7
5505594.785.54
6006105.546.359.5312.7
7507626.357.92
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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