Schedule 20 steel pipe: outside diameter, wall thickness and weight chart
Schedule 20 in ASME B36.10M gives one wall for each size, from 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 |
|---|---|---|---|---|
| 8 inch (DN 200) | 219.1 mm (8.625 in) | 6.35 mm (0.250 in) | 206.40 mm (8.125 in) | 33.32 kg/m (22.38 lb/ft) |
| 10 inch (DN 250) | 273.0 mm (10.750 in) | 6.35 mm (0.250 in) | 260.30 mm (10.250 in) | 41.76 kg/m (28.06 lb/ft) |
| 12 inch (DN 300) | 323.8 mm (12.750 in) | 6.35 mm (0.250 in) | 311.10 mm (12.250 in) | 49.71 kg/m (33.41 lb/ft) |
| 14 inch (DN 350) | 355.6 mm (14.000 in) | 7.92 mm (0.312 in) | 339.76 mm (13.376 in) | 67.91 kg/m (45.65 lb/ft) |
| 16 inch (DN 400) | 406.4 mm (16.000 in) | 7.92 mm (0.312 in) | 390.56 mm (15.376 in) | 77.83 kg/m (52.32 lb/ft) |
| 18 inch (DN 450) | 457 mm (18.000 in) | 7.92 mm (0.312 in) | 441.16 mm (17.376 in) | 87.71 kg/m (58.99 lb/ft) |
| 20 inch (DN 500) | 508 mm (20.000 in) | 9.53 mm (0.375 in) | 488.94 mm (19.250 in) | 117.15 kg/m (78.67 lb/ft) |
| 22 inch (DN 550) | 559 mm (22.000 in) | 9.53 mm (0.375 in) | 539.94 mm (21.250 in) | 129.14 kg/m (86.69 lb/ft) |
| 24 inch (DN 600) | 610 mm (24.000 in) | 9.53 mm (0.375 in) | 590.94 mm (23.250 in) | 141.12 kg/m (94.71 lb/ft) |
| 26 inch (DN 650) | 660 mm (26.000 in) | 12.70 mm (0.500 in) | 634.60 mm (25.000 in) | 202.74 kg/m (136.30 lb/ft) |
| 28 inch (DN 700) | 711 mm (28.000 in) | 12.70 mm (0.500 in) | 685.60 mm (27.000 in) | 218.71 kg/m (146.99 lb/ft) |
| 30 inch (DN 750) | 762 mm (30.000 in) | 12.70 mm (0.500 in) | 736.60 mm (29.000 in) | 234.68 kg/m (157.68 lb/ft) |
| 32 inch (DN 800) | 813 mm (32.000 in) | 12.70 mm (0.500 in) | 787.60 mm (31.000 in) | 250.65 kg/m (168.37 lb/ft) |
| 34 inch (DN 850) | 864 mm (34.000 in) | 12.70 mm (0.500 in) | 838.60 mm (33.000 in) | 266.63 kg/m (179.06 lb/ft) |
| 36 inch (DN 900) | 914 mm (36.000 in) | 12.70 mm (0.500 in) | 888.60 mm (35.000 in) | 282.29 kg/m (189.75 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 20 pipe?
- It is the schedule 20 wall series in ASME B36.10M: one wall for each size, from 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 20 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.
Other schedules
- Schedule 5
- Schedule 5S
- Schedule 10
- Schedule 10S
- Schedule 30
- Schedule 40
- STD
- Schedule 40S
- Schedule 60
- Schedule 80
- XS
- Schedule 80S
- Schedule 100
- Schedule 120
- Schedule 140
- Schedule 160
- XXS
By size
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- 2-1/2 inch
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- 3-1/2 inch
- 4 inch
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- 6 inch
- 8 inch
- 10 inch
- 12 inch
- 14 inch
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- 28 inch
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- 32 inch
- 34 inch
- 36 inch