Outer diameter dimensions and wall thickness are critical factors affecting the performance and applicability of tubing. As a professional steel pipe supplier and manufacturer, we are committed to providing customers with accurate and reliable product information to meet diverse industrial requirements. This article will focus on the outer diameter dimensions and wall thickness standards for American Standard pipes, offering you clear reference guidelines. Through an in-depth analysis of these standards, we aim to assist you in making more precise decisions when selecting and procuring steel pipes.
| NorminaPipe Size | Outside Diameter | Norminal Wall Thickness | ||||||||
| NPS inch | DN | ODmm | Sch5s | Sch10s | Sch10 | Sch20 | Sch30 | Sch40s | STD | Sch40 |
| 1/8 | 6 | 10.3 | 1.24 | 1.73 | 1.73 | 1.73 | ||||
| 1/4 | 8 | 13.7 | 1.65 | 2.24 | 2.24 | 2.24 | ||||
| 3/8 | 10 | 17.1 | 1.65 | 2.31 | 2.31 | 2.31 | ||||
| 1/2 | 15 | 21.3 | 1.65 | 2.11 | 2.77 | 2.77 | 2.77 | |||
| 3/4 | 20 | 26.7 | 1.65 | 2.11 | 2.87 | 2.87 | 2.87 | |||
| 1 | 25 | 33.4 | 1.65 | 2.77 | 3.38 | 3.38 | 3.38 | |||
| 1-1/4 | 32 | 42.2 | 1.65 | 2.77 | 3.56 | 3.56 | 3.56 | |||
| 1-1/2 | 40 | 48.3 | 1.65 | 2.77 | 3.68 | 3.68 | 3.68 | |||
| 2 | 50 | 60.3 | 1.65 | 2.77 | 3.91 | 3.91 | 3.91 | |||
| 2-1/2 | 65 | 73.0 | 2.11 | 3.05 | 5.16 | 5.16 | 5.16 | |||
| 3 | 80 | 88.9 | 2.11 | 3.05 | 5.49 | 5.49 | 5.49 | |||
| 3-1/2 | 90 | 101.6 | 2.11 | 3.05 | 5.74 | 5.74 | 5.74 | |||
| 4 | 100 | 114.3 | 2.11 | 3.05 | 6.02 | 6.02 | 6.02 | |||
| 5 | 125 | 141.3 | 2.77 | 3.40 | 6.55 | 6.55 | 6.55 | |||
| 6 | 150 | 168.3 | 2.77 | 3.40 | 7.11 | 7.11 | 7.11 | |||
| 8 | 200 | 219.1 | 2.77 | 3.76 | 6.35 | 7.04 | 8.18 | 8.18 | 8.18 | |
| 10 | 250 | 273.1 | 3.40 | 4.19 | 6.35 | 7.80 | 9.27 | 9.27 | 9.27 | |
| 12 | 300 | 323.9 | 3.96 | 4.57 | 6.35 | 8.38 | 9.53 | 9.53 | 10.31 | |
| 14 | 350 | 355.6 | 3.96 | 4.78 | 6.35 | 7.92 | 9.53 | 9.53 | 11.13 | |
| 16 | 400 | 406.4 | 4.19 | 4.78 | 6.35 | 7.92 | 9.53 | 9.53 | 12.70 | |
| 18 | 450 | 457.2 | 4.19 | 4.78 | 6.35 | 7.92 | 11.13 | 9.53 | 14.27 | |
| 20 | 500 | 508.0 | 4.78 | 5.54 | 6.35 | 9.53 | 12.70 | 9.53 | 15.09 | |
| 22 | 558.8 | 4.78 | 5.54 | 6.35 | 9.53 | 12.70 | 9.53 | |||
| 24 | 600 | 609.6 | 5.54 | 6.35 | 6.35 | 9.53 | 14.27 | 9.53 | 17.48 | |
| 26 | 660.4 | 7.92 | 12.70 | 9.53 | ||||||
| 28 | 700 | 711.2 | 7.92 | 12.70 | 15.88 | 9.53 | ||||
| 30 | 762.0 | 6.35 | 7.92 | 7.92 | 12.70 | 15.88 | 9.53 | |||
| 32 | 800 | 812.8 | 7.92 | 12.70 | 15.88 | 9.53 | 17.48 | |||
| 34 | 863.6 | 7.92 | 12.70 | 15.88 | 9.53 | 17.48 | ||||
| 36 | 900 | 914.4 | 7.92 | 12.70 | 15.88 | 9.53 | 17.48 | |||
| 38 | 965.2 | 9.53 | ||||||||
| 40 | 1000 | 1016.0 | 9.53 | |||||||
| 42 | 1066.8 | 9.53 | ||||||||
| 44 | 1100 | 1117.6 | 9.53 | |||||||
| 46 | 1168.4 | 9.53 | ||||||||
| 48 | 1200 | 1219.2 | 9.53 | |||||||
| NorminaPipe Size | Outside Diameter | Norminal Wall Thickness | |||||||||
| NPS inch | DN | ODmm | Sch60 | Sch80s | XS | Sch80 | Sch100 | Sch120 | Sch140 | Sch160 | XXS |
| 1/8 | 6 | 10.3 | 2.41 | 2.41 | 2.41 | ||||||
| 1/4 | 8 | 13.7 | 3.02 | 3.02 | 3.02 | ||||||
| 3/8 | 10 | 17.1 | 3.20 | 3.20 | 3.20 | ||||||
| 1/2 | 15 | 21.3 | 3.73 | 3.73 | 3.73 | 4.78 | 7.47 | ||||
| 3/4 | 20 | 26.7 | 3.91 | 3.91 | 3.91 | 5.56 | 7.82 | ||||
| 1 | 25 | 33.4 | 4.55 | 4.55 | 4.55 | 6.35 | 9.09 | ||||
| 1-1/4 | 32 | 42.2 | 4.85 | 4.85 | 4.85 | 6.35 | 9.70 | ||||
| 1-1/2 | 40 | 48.3 | 5.08 | 5.08 | 5.08 | 7.14 | 10.15 | ||||
| 2 | 50 | 60.3 | 5.54 | 5.54 | 5.54 | 8.74 | 11.07 | ||||
| 2-1/2 | 65 | 73.0 | 7.01 | 7.01 | 7.01 | 9.53 | 14.02 | ||||
| 3 | 80 | 88.9 | 7.62 | 7.62 | 7.62 | 11.13 | 15.24 | ||||
| 3-1/2 | 90 | 101.6 | 8.08 | 8.08 | 8.08 | ||||||
| 4 | 100 | 114.3 | 8.56 | 8.56 | 8.56 | 11.13 | 13.49 | 17.12 | |||
| 5 | 125 | 141.3 | 9.53 | 9.53 | 9.53 | 12.70 | 15.88 | 19.05 | |||
| 6 | 150 | 168.3 | 10.97 | 10.97 | 10.97 | 14.27 | 18.26 | 21.95 | |||
| 8 | 200 | 219.1 | 10.31 | 12.70 | 12.70 | 12.70 | 15.09 | 18.26 | 20.62 | 23.01 | 22.23 |
| 10 | 250 | 273.1 | 12.70 | 12.70 | 12.70 | 15.09 | 18.26 | 21.44 | 25.40 | 28.58 | 25.40 |
| 12 | 300 | 323.9 | 14.27 | 12.70 | 12.70 | 17.48 | 21.44 | 25.40 | 28.58 | 33.32 | 25.40 |
| 14 | 350 | 355.6 | 15.09 | 12.70 | 19.05 | 23.83 | 27.79 | 31.75 | 35.71 | ||
| 16 | 400 | 406.4 | 16.66 | 12.70 | 21.44 | 26.19 | 30.96 | 36.53 | 40.49 | ||
| 18 | 450 | 457.2 | 19.05 | 12.70 | 23.83 | 29.36 | 34.96 | 39.67 | 45.24 | ||
| 20 | 500 | 508.0 | 20.62 | 12.70 | 26.19 | 32.54 | 38.10 | 44.45 | 50.01 | ||
| 22 | 558.8 | 22.23 | 12.70 | 28.58 | 34.93 | 41.28 | 47.63 | 53.98 | |||
| 24 | 600 | 609.6 | 24.61 | 12.70 | 30.96 | 38.89 | 46.02 | 52.37 | 59.54 | ||
| 26 | 660.4 | 12.70 | |||||||||
| 28 | 700 | 711.2 | 12.70 | ||||||||
| 30 | 762.0 | 12.70 | |||||||||
| 32 | 800 | 812.8 | 12.70 | ||||||||
| 34 | 863.6 | 12.70 | |||||||||
| 36 | 900 | 914.4 | 12.70 | ||||||||
| 38 | 965.2 | 12.70 | |||||||||
| 40 | 1000 | 1016.0 | 12.70 | ||||||||
| 42 | 1066.8 | 12.70 | |||||||||
| 44 | 1100 | 1117.6 | 12.70 | ||||||||
| 46 | 1168.4 | 12.70 | |||||||||
| 48 | 1200 | 1219.2 | 12.70 | ||||||||
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