Pipe-Wall-Thickness - wall thickness table for standard pipe schedules

Oct 12, 2026

Uploaded by Ophelia

This document provides a wall thickness reference table for nominal pipe sizes (inches) with corresponding outside diameters in millimeters. It lists wall thickness values in millimeters for multiple standard pipe schedules, including SCH 10, SCH 20, SCH 30, SCH STD, SCH 40, SCH 60, SCH XS, SCH 80, SCH 100, SCH 120, SCH 140, SCH 160, and SCH XXS, alongside selected “S” variants. It is intended for selecting appropriate pipe thickness based on nominal size and schedule, with figures attributed to austenitic steel standards ASME/ANSI B36.19 and B36.10.

LanguageEnglish

CategoryGeneral

FormatPDF

Pages1

AccessFree to download

Pipe sizing inputs

Nominal pipe size (inches) and outside diameter (mm)

Wall thickness by schedule

SCH 10 through SCH 160 and SCH XXS / S variants

ASTMA312, A358, A778, A53, A106, API 5L ASME/ANSI B36.19 B36.10 | Nominal Pipe Size Inches | Outside Diameter | | Wall thickness: mm | | | | | | | | | | | | | Figures based on austenitic steel | | | | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | | in | mm | SCH 10 | SCH 20 | SCH 30 | SCH STD | SCH 40 | SCH 60 | SCH XS | SCH 80 | SCH 100 | SCH 120 | SCH 140 | SCH 160 | SCH XXS | SCH 5 S | SCH 10 S | SCH 40 S | SCH 80 S | | 1/8 | 0.405 | 10.29 | 1.24 | | | 1.73 | 1.73 | | 2.41 | 2.41 | | | | | | | 1.24 | 1.73 | 2.41 | | 1/4 | 0.540 | 13.72 | 1.65 | | 1.85 | 2.24 | 2.24 | | 3.02 | 3.02 | | | | | | | 1.65 | 2.24 | 3.02 | | 3/8 | 0.675 | 17.15 | 1.65 | | 1.85 | 2.31 | 2.31 | | 3.2 | 3.2 | | | | | | | 1.65 | 2.31 | 3.2 | | 1/2 | 0.840 | 21.34 | 2.11 | | 2.41 | 2.77 | 2.77 | | 3.73 | 3.73 | | | | 4.78 | 7.47 | 1.65 | 2.11 | 2.77 | 3.73 | | 3/4 | 1.050 | 26.67 | 2.11 | | 2.41 | 2.87 | 2.87 | | 3.91 | 3.91 | | | | 5.56 | 7.82 | 1.65 | 2.11 | 2.87 | 3.91 | | 1 | 1.315 | 33.40 | 2.77 | | 2.90 | 3.38 | 3.38 | | 4.55 | 4.55 | | | | 6.35 | 9.09 | 1.65 | 2.77 | 3.38 | 4.55 | | 1 1/4 | 1.660 | 42.16 | 2.77 | | 2.97 | 3.56 | 3.56 | | 4.85 | 4.85 | | | | 6.35 | 9.7 | 1.65 | 2.77 | 3.56 | 4.85 | | 1 1/2 | 1.900 | 48.26 | 2.77 | | 3.18 | 3.68 | 3.68 | | 5.08 | 5.08 | | | | 7.14 | 10.15 | 1.65 | 2.77 | 3.68 | 5.08 | | 2 | 2.375 | 60.33 | 2.77 | | 3.18 | 3.91 | 3.91 | | 5.54 | 5.54 | | | | 8.74 | 11.07 | 1.65 | 2.77 | 3.91 | 5.54 | | 2 1/2 | 2.875 | 73.03 | 3.05 | | 4.78 | 5.16 | 5.16 | | 7.01 | 7.01 | | | | 9.35 | 14.02 | 2.11 | 3.05 | 5.16 | 7.01 | | 3 | 3.500 | 88.90 | 3.05 | | 4.78 | 5.49 | 5.49 | | 7.62 | 7.62 | | | | 11.13 | 15.24 | 2.11 | 3.05 | 5.49 | 7.62 | | 3 1/2 | 4.000 | 101.60 | 3.05 | | 4.78 | 5.74 | 5.74 | | 8.08 | 8.08 | | | | - | - | 2.11 | 3.05 | 5.74 | 8.08 | | 4 | 4.500 | 114.30 | 3.05 | | 4.78 | 6.02 | 6.02 | | 8.56 | 8.56 | | 11.13 | | 13.49 | 17.12 | 2.11 | 3.05 | 6.02 | 8.56 | | 5 | 5.563 | 141.30 | 3.4 | | | 6.55 | 6.55 | | 9.53 | 9.53 | | 12.7 | | 15.88 | 19.05 | 2.77 | 3.40 | 6.55 | 9.53 | | 6 | 6.625 | 168.28 | 3.4 | | | 7.11 | 7.11 | | 10.97 | 10.97 | | 14.27 | | 18.26 | 21.95 | 2.77 | 3.40 | 7.11 | 10.97 | | 8 | 8.625 | 219.08 | 3.76 | 6.35 | 7.04 | 8.18 | 8.18 | 10.31 | 12.7 | 12.7 | 15.09 | 18.26 | 20.62 | 23.01 | 22.23 | 2.77 | 3.76 | 8.18 | 12.7 | | 10 | 10.750 | 273.05 | 4.19 | 6.35 | 7.80 | 9.27 | 9.27 | 12.7 | 12.7 | 15.09 | 18.26 | 21.44 | 25.4 | 28.58 | 25.4 | 3.4 | 4.19 | 9.27 | 12.7 | | 12 | 12.750 | 323.85 | 4.57 | 6.35 | 8.38 | 9.53 | 10.31 | 14.27 | 12.7 | 17.48 | 21.44 | 25.4 | 28.58 | 33.32 | 25.4 | 3.96 | 4.57 | 9.52 | 12.7 | | 14 | 14.000 | 355.60 | 6.35 | 7.92 | 9.53 | 9.53 | 11.13 | 15.09 | 12.7 | 19.05 | 23.83 | 27.79 | 31.75 | 35.71 | 35.71 | 3.96 | 4.78 | | | | 16 | 16.000 | 406.40 | 6.35 | 7.92 | 9.53 | 9.53 | 12.7 | 16.66 | 12.7 | 21.44 | 26.19 | 30.96 | 36.53 | 40.49 | 40.49 | 4.19 | 4.78 | | | | 18 | 18.000 | 457.20 | 6.35 | 7.92 | 11.13 | 9.53 | 14.27 | 19.05 | 12.7 | 23.88 | 29.36 | 34.93 | 39.67 | 45.24 | 45.24 | 4.19 | 7.78 | | | | 20 | 20.000 | 508.00 | 6.35 | 9.53 | 12.7 | 9.53 | 15.09 | 20.62 | 12.7 | 26.19 | 32.54 | 38.1 | 44.45 | 50.01 | 50.01 | 4.78 | 5.54 | | | | 22 | 22.000 | 558.80 | 6.35 | 9.53 | 12.7 | 9.53 | - | 22.23 | 12.7 | 28.58 | 34.93 | 41.28 | 47.63 | 53.98 | 53.97 | 4.78 | 5.54 | | | | 24 | 24.000 | 609.60 | 6.35 | 9.53 | 14.27 | 9.53 | 17.48 | 24.61 | 12.7 | 30.96 | 38.89 | 46.02 | 52.37 | 59.54 | 59.54 | 5.54 | 6.35 | | | | 26 | 26.000 | 660.00 | 6.35 | 12.7 | - | 9.53 | - | | 12.7 | | | | | | | | | | | | 28 | 28.000 | 711.20 | 6.35 | 12.7 | 15.88 | 9.53 | - | | 12.7 | | | | | | | | | | | | 30 | 30.000 | 762.00 | 6.35 | 12.7 | 15.88 | 9.53 | - | | 12.7 | | | | | | | 6.35 | 7.92 | | | | 32 | 32.000 | 812.80 | 6.35 | 12.7 | 15.88 | 9.53 | 17.48 |

FAQs

What measurements does the table provide for each nominal pipe size?

For each nominal pipe size (inches), the table provides the outside diameter (mm) and the wall thickness (mm) for multiple schedules.

Which pipe schedules are included for wall thickness values?

Included schedules span SCH 10, SCH 20, SCH 30, SCH STD, SCH 40, SCH 60, SCH XS, SCH 80, SCH 100, SCH 120, SCH 140, SCH 160, SCH XXS, and selected SCH 5 S / SCH 10 S / SCH 40 S / SCH 80 S variants.

What standards and material basis are referenced for the figures?

The document references ASTM and API/ASME/ANSI standards (including API 5L and ASME/ANSI B36.19 and B36.10) and notes that the figures are based on austenitic steel.

Oct 12, 2026

Uploaded by Ophelia