Schedule 40 steel pipe: outside diameter, wall thickness and weight chart
Schedule 40 in ASME B36.10M gives one wall for each size, from 1/8 inch to 36 inch. The outside diameter is that of the size, the same in every schedule; the inside diameter is the outside diameter less two walls.
| Size | OD | Wall | ID | Weight |
|---|---|---|---|---|
| 1/8 inch (DN 6) | 10.3 mm (0.405 in) | 1.73 mm (0.068 in) | 6.84 mm (0.269 in) | 0.37 kg/m (0.24 lb/ft) |
| 1/4 inch (DN 8) | 13.7 mm (0.540 in) | 2.24 mm (0.088 in) | 9.22 mm (0.364 in) | 0.63 kg/m (0.43 lb/ft) |
| 3/8 inch (DN 10) | 17.1 mm (0.675 in) | 2.31 mm (0.091 in) | 12.48 mm (0.493 in) | 0.84 kg/m (0.57 lb/ft) |
| 1/2 inch (DN 15) | 21.3 mm (0.840 in) | 2.77 mm (0.109 in) | 15.76 mm (0.622 in) | 1.27 kg/m (0.85 lb/ft) |
| 3/4 inch (DN 20) | 26.7 mm (1.050 in) | 2.87 mm (0.113 in) | 20.96 mm (0.824 in) | 1.69 kg/m (1.13 lb/ft) |
| 1 inch (DN 25) | 33.4 mm (1.315 in) | 3.38 mm (0.133 in) | 26.64 mm (1.049 in) | 2.50 kg/m (1.68 lb/ft) |
| 1-1/4 inch (DN 32) | 42.2 mm (1.660 in) | 3.56 mm (0.140 in) | 35.08 mm (1.380 in) | 3.39 kg/m (2.27 lb/ft) |
| 1-1/2 inch (DN 40) | 48.3 mm (1.900 in) | 3.68 mm (0.145 in) | 40.94 mm (1.610 in) | 4.05 kg/m (2.72 lb/ft) |
| 2 inch (DN 50) | 60.3 mm (2.375 in) | 3.91 mm (0.154 in) | 52.48 mm (2.067 in) | 5.44 kg/m (3.66 lb/ft) |
| 2-1/2 inch (DN 65) | 73.0 mm (2.875 in) | 5.16 mm (0.203 in) | 62.68 mm (2.469 in) | 8.63 kg/m (5.80 lb/ft) |
| 3 inch (DN 80) | 88.9 mm (3.500 in) | 5.49 mm (0.216 in) | 77.92 mm (3.068 in) | 11.29 kg/m (7.58 lb/ft) |
| 3-1/2 inch (DN 90) | 101.6 mm (4.000 in) | 5.74 mm (0.226 in) | 90.12 mm (3.548 in) | 13.57 kg/m (9.12 lb/ft) |
| 4 inch (DN 100) | 114.3 mm (4.500 in) | 6.02 mm (0.237 in) | 102.26 mm (4.026 in) | 16.08 kg/m (10.80 lb/ft) |
| 5 inch (DN 125) | 141.3 mm (5.563 in) | 6.55 mm (0.258 in) | 128.20 mm (5.047 in) | 21.77 kg/m (14.63 lb/ft) |
| 6 inch (DN 150) | 168.3 mm (6.625 in) | 7.11 mm (0.280 in) | 154.08 mm (6.065 in) | 28.26 kg/m (18.99 lb/ft) |
| 8 inch (DN 200) | 219.1 mm (8.625 in) | 8.18 mm (0.322 in) | 202.74 mm (7.981 in) | 42.55 kg/m (28.58 lb/ft) |
| 10 inch (DN 250) | 273.0 mm (10.750 in) | 9.27 mm (0.365 in) | 254.46 mm (10.020 in) | 60.29 kg/m (40.52 lb/ft) |
| 12 inch (DN 300) | 323.8 mm (12.750 in) | 10.31 mm (0.406 in) | 303.18 mm (11.938 in) | 79.71 kg/m (53.57 lb/ft) |
| 14 inch (DN 350) | 355.6 mm (14.000 in) | 11.13 mm (0.438 in) | 333.34 mm (13.124 in) | 94.55 kg/m (63.50 lb/ft) |
| 16 inch (DN 400) | 406.4 mm (16.000 in) | 12.70 mm (0.500 in) | 381.00 mm (15.000 in) | 123.31 kg/m (82.85 lb/ft) |
| 18 inch (DN 450) | 457 mm (18.000 in) | 14.27 mm (0.562 in) | 428.46 mm (16.876 in) | 155.81 kg/m (104.76 lb/ft) |
| 20 inch (DN 500) | 508 mm (20.000 in) | 15.09 mm (0.594 in) | 477.82 mm (18.812 in) | 183.43 kg/m (123.23 lb/ft) |
| 24 inch (DN 600) | 610 mm (24.000 in) | 17.48 mm (0.688 in) | 575.04 mm (22.624 in) | 255.43 kg/m (171.45 lb/ft) |
| 32 inch (DN 800) | 813 mm (32.000 in) | 17.48 mm (0.688 in) | 778.04 mm (30.624 in) | 342.94 kg/m (230.29 lb/ft) |
| 34 inch (DN 850) | 864 mm (34.000 in) | 17.48 mm (0.688 in) | 829.04 mm (32.624 in) | 364.92 kg/m (245.00 lb/ft) |
| 36 inch (DN 900) | 914 mm (36.000 in) | 19.05 mm (0.750 in) | 875.90 mm (34.500 in) | 420.45 kg/m (282.62 lb/ft) |
Plain-end weight of carbon steel pipe, by the standard's own formula: 10.69 × (D − t) × t in lb/ft, with D and t in inches (0.0246615 × (D − t) × t in kg/m, in mm). Austenitic stainless weighs about 2% more.
Questions
- What is schedule 40 pipe?
- It is the schedule 40 wall series in ASME B36.10M: one wall for each size, from 1/8 inch to 36 inch. The outside diameter is that of the size, and the inside diameter is the outside diameter less two walls.
- How do you calculate the weight of schedule 40 pipe?
- With the standard's own formula: weight in lb/ft = 10.69 × (D − t) × t, with the outside diameter D and the wall t in inches; in kg/m, 0.0246615 × (D − t) × t in millimetres. That is carbon steel; austenitic stainless weighs about 2% more.
- Does schedule 40 PVC pipe have the same dimensions?
- The outside diameter, yes, in every size; and nearly always the wall -- where they differ, it is by a thousandth of an inch (ASTM D1785). But the PVC wall is a minimum and the steel wall is nominal, and the weight in the chart is for steel.
Other schedules
- Schedule 5
- Schedule 5S
- Schedule 10
- Schedule 10S
- Schedule 20
- Schedule 30
- STD
- Schedule 40S
- Schedule 60
- Schedule 80
- XS
- Schedule 80S
- Schedule 100
- Schedule 120
- Schedule 140
- Schedule 160
- XXS
By size
- 1/8 inch
- 1/4 inch
- 3/8 inch
- 1/2 inch
- 3/4 inch
- 1 inch
- 1-1/4 inch
- 1-1/2 inch
- 2 inch
- 2-1/2 inch
- 3 inch
- 3-1/2 inch
- 4 inch
- 5 inch
- 6 inch
- 8 inch
- 10 inch
- 12 inch
- 14 inch
- 16 inch
- 18 inch
- 20 inch
- 22 inch
- 24 inch
- 26 inch
- 28 inch
- 30 inch
- 32 inch
- 34 inch
- 36 inch