Schedule 10 pipe dimensions: OD, wall thickness, ID and weight
Deskely Completions team Singapore
Schedule 10 is a light wall schedule. In stainless steel it is usually bought as 10S, which has the same wall up to NPS 12; for carbon steel the numbered schedule 10 is listed in ASME B36.10M from NPS 14 up.
The chart below gives every size in schedule 10, from NPS 1/2 to 36: outside diameter, wall thickness, inside diameter and the weight of plain-end carbon steel pipe, in mm and inches.
- Sch 10 is a wall thickness that changes with size: 2.77 mm on NPS 2.
- The outside diameter is fixed for each NPS, so a heavier schedule only changes the bore.
- Typical use: low pressure stainless steel lines.
- Weights are for plain-end carbon steel; stainless steel is about 2 percent heavier.
Schedule 10 pipe chart
Click a size for every schedule of that size. Dimensions are nominal, per ASME B36.10M.
| NPS | DN | OD mm (in) | Wall mm (in) | ID mm (in) | kg/m (lb/ft) |
|---|---|---|---|---|---|
| 1/2 | 15 | 21.3 (0.840) | 2.11 (0.083) | 17.08 (0.672) | 1.00 (0.67) |
| 3/4 | 20 | 26.7 (1.050) | 2.11 (0.083) | 22.48 (0.885) | 1.28 (0.86) |
| 1 | 25 | 33.4 (1.315) | 2.77 (0.109) | 27.86 (1.097) | 2.09 (1.41) |
| 1-1/4 | 32 | 42.2 (1.660) | 2.77 (0.109) | 36.66 (1.443) | 2.69 (1.81) |
| 1-1/2 | 40 | 48.3 (1.900) | 2.77 (0.109) | 42.76 (1.683) | 3.11 (2.09) |
| 2 | 50 | 60.3 (2.375) | 2.77 (0.109) | 54.76 (2.156) | 3.93 (2.64) |
| 14 | 350 | 355.6 (14.000) | 6.35 (0.250) | 342.90 (13.500) | 54.69 (36.75) |
| 16 | 400 | 406.4 (16.000) | 6.35 (0.250) | 393.70 (15.500) | 62.65 (42.10) |
| 18 | 450 | 457 (18.000) | 6.35 (0.250) | 444.30 (17.492) | 70.57 (47.42) |
| 20 | 500 | 508 (20.000) | 6.35 (0.250) | 495.30 (19.500) | 78.56 (52.79) |
| 24 | 600 | 610 (24.000) | 6.35 (0.250) | 597.30 (23.516) | 94.53 (63.52) |
| 26 | 650 | 660 (26.000) | 7.92 (0.312) | 644.16 (25.361) | 127.36 (85.58) |
| 28 | 700 | 711 (28.000) | 7.92 (0.312) | 695.16 (27.369) | 137.32 (92.28) |
| 30 | 750 | 762 (30.000) | 7.92 (0.312) | 746.16 (29.376) | 147.29 (98.97) |
| 32 | 800 | 813 (32.000) | 7.92 (0.312) | 797.16 (31.384) | 157.25 (105.67) |
| 34 | 850 | 864 (34.000) | 7.92 (0.312) | 848.16 (33.392) | 167.21 (112.36) |
| 36 | 900 | 914 (36.000) | 7.92 (0.312) | 898.16 (35.361) | 176.97 (118.92) |
Mill tolerances apply, and the pipe specification and purchase order for your project take precedence over this chart.
How to work out the inside diameter and weight
The inside diameter is the outside diameter minus twice the wall thickness. The weight per metre of plain-end carbon steel pipe is:
W (kg/m) = 0.0246615 x (OD - t) x t, with OD and wall thickness t in mm. For NPS 1/2 Sch 10: 0.0246615 x (21.3 - 2.11) x 2.11 = 1.00 kg/m.
Where Sch 10 pipe is used
Low pressure stainless steel lines, sprinkler and fire water systems, food, water treatment and large diameter low pressure lines.
Schedule 40 is roughly twice the wall thickness of schedule 10 in the small sizes.
Every schedule in one chart
To compare schedules side by side, or look up a size in any schedule, use the full pipe schedule chart. Other schedules:
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Frequently asked questions
What is the wall thickness of Sch 10 pipe?
It depends on the size. NPS 1/2: 2.11 mm, NPS 1: 2.77 mm, NPS 2: 2.77 mm. See the chart for every size.
What is the inside diameter of 2 inch Sch 10 pipe?
54.8 mm (2.156 in), from an outside diameter of 60.3 mm and a wall of 2.77 mm.
How does Sch 10 compare with other schedules?
Schedule 40 is roughly twice the wall thickness of schedule 10 in the small sizes.
Is the outside diameter the same for every schedule?
Yes. For each NPS the outside diameter is fixed so that fittings and flanges fit; only the wall thickness and so the bore change with the schedule.
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