Pipe schedule chart: ASME B36.10M and B36.19M
Outside diameter, wall thickness and weight for the common schedules, with a calculator for any material.
Pipe weight calculator
Choose size, schedule and material.
Pipe weight calculator
Weight from ASME B36.10M / B36.19M dimensions and material density.
Plain-end weight, calculated. Mill weights vary within the tolerance of the pipe specification.
What OD and wall mean
- ODOutside diameter
- tWall thickness for the schedule
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Wall thickness by schedule
| Size | OD | Sch 5S | Sch 10S | Sch 30 | STD | XS | Sch 160 | XXS | STD kg/m | |
|---|---|---|---|---|---|---|---|---|---|---|
| 1/2" (15 NB) | 21.3 | 1.65 | 2.11 | – | 2.77 | 3.73 | 4.78 | 7.47 | 1.27 | Quote |
| 3/4" (20 NB) | 26.7 | 1.65 | 2.11 | – | 2.87 | 3.91 | 5.56 | 7.82 | 1.69 | Quote |
| 1" (25 NB) | 33.4 | 1.65 | 2.77 | – | 3.38 | 4.55 | 6.35 | 9.09 | 2.50 | Quote |
| 1-1/4" (32 NB) | 42.2 | 1.65 | 2.77 | – | 3.56 | 4.85 | 6.35 | 9.70 | 3.39 | Quote |
| 1-1/2" (40 NB) | 48.3 | 1.65 | 2.77 | – | 3.68 | 5.08 | 7.14 | 10.15 | 4.05 | Quote |
| 2" (50 NB) | 60.3 | 1.65 | 2.77 | – | 3.91 | 5.54 | 8.74 | 11.07 | 5.44 | Quote |
| 2-1/2" (65 NB) | 73.0 | 2.11 | 3.05 | – | 5.16 | 7.01 | 9.53 | 14.02 | 8.63 | Quote |
| 3" (80 NB) | 88.9 | 2.11 | 3.05 | – | 5.49 | 7.62 | 11.13 | 15.24 | 11.29 | Quote |
| 3-1/2" (90 NB) | 101.6 | 2.11 | 3.05 | – | 5.74 | 8.08 | – | – | 13.57 | Quote |
| 4" (100 NB) | 114.3 | 2.11 | 3.05 | – | 6.02 | 8.56 | 13.49 | 17.12 | 16.08 | Quote |
| 5" (125 NB) | 141.3 | 2.77 | 3.40 | – | 6.55 | 9.53 | 15.88 | 19.05 | 21.77 | Quote |
| 6" (150 NB) | 168.3 | 2.77 | 3.40 | – | 7.11 | 10.97 | 18.26 | 21.95 | 28.26 | Quote |
| 8" (200 NB) | 219.1 | 2.77 | 3.76 | 7.04 | 8.18 | 12.70 | 23.01 | 22.23 | 42.55 | Quote |
| 10" (250 NB) | 273.0 | 3.40 | 4.19 | 7.80 | 9.27 | 12.70 | 28.58 | 25.40 | 60.29 | Quote |
| 12" (300 NB) | 323.8 | 3.96 | 4.57 | 8.38 | 9.53 | 12.70 | 33.32 | 25.40 | 73.86 | Quote |
| 14" (350 NB) | 355.6 | 3.96 | 4.78 | 7.92 | 9.53 | 12.70 | 35.71 | – | 81.33 | Quote |
| 16" (400 NB) | 406.4 | 4.19 | 4.78 | 9.53 | 9.53 | 12.70 | 40.49 | – | 93.27 | Quote |
| 18" (450 NB) | 457.2 | 4.19 | 4.78 | 11.13 | 9.53 | 12.70 | 45.24 | – | 105.21 | Quote |
| 20" (500 NB) | 508.0 | 4.78 | 5.54 | 12.70 | 9.53 | 12.70 | 50.01 | – | 117.15 | Quote |
| 24" (600 NB) | 609.6 | 5.54 | 6.35 | 14.27 | 9.53 | 12.70 | 59.54 | – | 141.03 | Quote |
STD weight per metre calculated for carbon steel with the B36.10M formula. Sch 5S and 10S apply to stainless (B36.19M).
Questions buyers ask
What is the difference between Schedule 40 and Schedule 40S?
Schedule 40 is from ASME B36.10M for carbon and alloy steel; 40S is from B36.19M for stainless. They match up to 10 inch. At 12 inch, Sch 40 is 10.31 mm while 40S is 9.53 mm.
How is pipe weight per metre calculated?
For carbon steel, kg/m = 0.02466 x (OD − wall) x wall, with OD and wall in mm. Other materials scale by density, which the calculator does for you.
Get a quotation from the manufacturer
Send your BOQ, drawing or tender reference. You deal directly with the manufacturer.
- Reply from our estimation team, usually within one working day
- Carbon steel to titanium on one order
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