The seamless pipe weight chart shows standard weight-per-metre values for carbon steel, alloy steel, and stainless steel seamless pipes for all common sizes and schedules (ASME B36.10M and B36.19M). It is a quick guide for buyers, design engineers, and fabricators to find pipe weights for ordering materials, planning transport, and checking MTCs (Mill Test Certificates).
ASME B36.10M — Carbon & Alloy Steel Seamless Pipe
Weights in kg/m, based on nominal outside diameter and wall thickness, are provided below. These values are applicable to ASTM A106, A53, A333, A335 grades and equivalent alloy-steel seamless pipes.
| NB (inch) | DN (mm) | OD (mm) | SCH 10 WT (mm) / Wt (kg/m) | SCH 40 / STD WT (mm) / Wt (kg/m) | SCH 80 / XS WT (mm) / Wt (kg/m) | SCH 160 WT (mm) / Wt (kg/m) | SCH XXS WT (mm) / Wt (kg/m) |
|---|---|---|---|---|---|---|---|
| 1/8" | 6 | 10.3 | 1.24 mm 0.28 kg/m |
1.73 mm 0.37 kg/m |
2.41 mm 0.47 kg/m |
— | — |
| 1/4" | 8 | 13.7 | 1.65 mm 0.49 kg/m |
2.24 mm 0.63 kg/m |
3.02 mm 0.80 kg/m |
— | — |
| 3/8" | 10 | 17.1 | 1.65 mm 0.63 kg/m |
2.31 mm 0.84 kg/m |
3.20 mm 1.10 kg/m |
— | — |
| 1/2" | 15 | 21.3 | 2.11 mm 1.00 kg/m |
2.77 mm 1.27 kg/m |
3.73 mm 1.62 kg/m |
4.78 mm 1.95 kg/m |
7.47 mm 2.55 kg/m |
| 3/4" | 20 | 26.7 | 2.11 mm 1.28 kg/m |
2.87 mm 1.69 kg/m |
3.91 mm 2.20 kg/m |
5.56 mm 2.90 kg/m |
7.82 mm 3.64 kg/m |
| 1" | 25 | 33.4 | 2.77 mm 2.09 kg/m |
3.38 mm 2.50 kg/m |
4.55 mm 3.24 kg/m |
6.35 mm 4.24 kg/m |
9.09 mm 5.45 kg/m |
| 1 1/4" | 32 | 42.2 | 2.77 mm 2.69 kg/m |
3.56 mm 3.39 kg/m |
4.85 mm 4.47 kg/m |
6.35 mm 5.61 kg/m |
9.70 mm 7.77 kg/m |
| 1 1/2" | 40 | 48.3 | 2.77 mm 3.11 kg/m |
3.68 mm 4.05 kg/m |
5.08 mm 5.41 kg/m |
7.14 mm 7.25 kg/m |
10.15 mm 9.55 kg/m |
| 2" | 50 | 60.3 | 2.77 mm 3.93 kg/m |
3.91 mm 5.44 kg/m |
5.54 mm 7.48 kg/m |
8.74 mm 11.11 kg/m |
11.07 mm 13.44 kg/m |
| 2 1/2" | 65 | 73.0 | 3.05 mm 5.26 kg/m |
5.16 mm 8.63 kg/m |
7.01 mm 11.41 kg/m |
9.53 mm 14.92 kg/m |
14.02 mm 20.39 kg/m |
| 3" | 80 | 88.9 | 3.05 mm 6.46 kg/m |
5.49 mm 11.29 kg/m |
7.62 mm 15.27 kg/m |
11.13 mm 21.35 kg/m |
15.24 mm 27.68 kg/m |
| 3 1/2" | 90 | 101.6 | 3.05 mm 7.41 kg/m |
5.74 mm 13.57 kg/m |
8.08 mm 18.64 kg/m |
— | — |
| 4" | 100 | 114.3 | 3.05 mm 8.37 kg/m |
6.02 mm 16.08 kg/m |
8.56 mm 22.32 kg/m |
13.49 mm 33.54 kg/m |
17.12 mm 41.03 kg/m |
| 5" | 125 | 141.3 | 3.40 mm 11.56 kg/m |
6.55 mm 21.77 kg/m |
9.53 mm 30.97 kg/m |
15.88 mm 49.12 kg/m |
19.05 mm 57.43 kg/m |
| 6" | 150 | 168.3 | 3.40 mm 13.83 kg/m |
7.11 mm 28.26 kg/m |
10.97 mm 42.56 kg/m |
18.26 mm 67.57 kg/m |
21.95 mm 79.22 kg/m |
| 8" | 200 | 219.1 | 3.76 mm 19.97 kg/m |
8.18 mm 42.55 kg/m |
12.70 mm 64.64 kg/m |
23.01 mm 111.27 kg/m |
22.23 mm 107.93 kg/m |
| 10" | 250 | 273.0 | 4.19 mm 27.78 kg/m |
9.27 mm 60.29 kg/m |
12.70 mm 81.53 kg/m |
28.58 mm 172.27 kg/m |
25.40 mm 155.10 kg/m |
| 12" | 300 | 323.8 | 4.57 mm 35.98 kg/m |
10.31 mm 79.71 kg/m |
12.70 mm 97.44 kg/m |
33.32 mm 238.69 kg/m |
25.40 mm 186.92 kg/m |
| 14" | 350 | 355.6 | — | 11.13 mm 94.55 kg/m |
12.70 mm 107.40 kg/m |
35.71 mm 281.72 kg/m |
— |
| 16" | 400 | 406.4 | 6.35 mm 62.65 kg/m |
12.70 mm 123.31 kg/m |
— | 40.49 mm 365.38 kg/m |
— |
| 18" | 450 | 457.0 | 6.35 mm 70.57 kg/m |
14.27 mm 155.81 kg/m |
— | 45.24 mm 459.39 kg/m |
— |
| 20" | 500 | 508.0 | 6.35 mm 78.56 kg/m |
15.09 mm 183.43 kg/m |
— | 50.01 mm 564.85 kg/m |
— |
| 22" | 550 | 559.0 | 6.35 mm 86.55 kg/m |
— | — | 53.98 mm 672.30 kg/m |
— |
| 24" | 600 | 610.0 | 6.35 mm 94.53 kg/m |
17.48 mm 255.43 kg/m |
— | 59.54 mm 808.27 kg/m |
— |
NB = Nominal Bore | DN = Diameter Nominal | OD = Outside Diameter | STD = Standard | XS = Extra Strong | XXS = Double Extra Strong |
ASME B36.19M — Stainless Steel Seamless Pipe
The weight of Stainless Steel seamless pipe in kg/m, based on carbon-steel density (7.85 g/cm³) is provided below. Applicable to ASTM A312 TP304, TP304L, TP316, TP316L, TP321, TP347 and equivalents.
| NB (inch) | DN (mm) | OD (mm) | SCH 5S WT (mm) / Wt (kg/m) | SCH 10S WT (mm) / Wt (kg/m) | SCH 40S WT (mm) / Wt (kg/m) | SCH 80S WT (mm) / Wt (kg/m) |
|---|---|---|---|---|---|---|
| 1/8" | 6 | 10.3 | — | 1.24 mm 0.26 kg/m |
1.73 mm 0.37 kg/m |
2.41 mm 0.47 kg/m |
| 1/4" | 8 | 13.7 | — | 1.65 mm 0.49 kg/m |
2.24 mm 0.63 kg/m |
3.02 mm 0.80 kg/m |
| 3/8" | 10 | 17.1 | — | 1.65 mm 0.63 kg/m |
2.31 mm 0.84 kg/m |
3.20 mm 1.10 kg/m |
| 1/2" | 15 | 21.3 | 1.65 mm 0.80 kg/m |
2.11 mm 1.00 kg/m |
2.77 mm 1.27 kg/m |
3.73 mm 1.62 kg/m |
| 3/4" | 20 | 26.7 | 1.65 mm 1.03 kg/m |
2.11 mm 1.28 kg/m |
2.87 mm 1.69 kg/m |
3.91 mm 2.20 kg/m |
| 1" | 25 | 33.4 | 1.65 mm 1.29 kg/m |
2.11 mm 1.68 kg/m |
3.38 mm 2.50 kg/m |
4.55 mm 3.24 kg/m |
| 1 1/4" | 32 | 42.2 | 1.65 mm 1.65 kg/m |
2.11 mm 2.15 kg/m |
3.56 mm 3.39 kg/m |
4.85 mm 4.47 kg/m |
| 1 1/2" | 40 | 48.3 | 1.65 mm 1.90 kg/m |
2.11 mm 2.47 kg/m |
3.68 mm 4.05 kg/m |
5.08 mm 5.41 kg/m |
| 2" | 50 | 60.3 | 1.65 mm 2.39 kg/m |
2.11 mm 3.10 kg/m |
3.91 mm 5.44 kg/m |
5.54 mm 7.48 kg/m |
| 2 1/2" | 65 | 73.0 | 2.11 mm 3.69 kg/m |
3.05 mm 5.26 kg/m |
5.16 mm 8.63 kg/m |
7.01 mm 11.41 kg/m |
| 3" | 80 | 88.9 | 2.11 mm 4.52 kg/m |
3.05 mm 6.46 kg/m |
5.49 mm 11.29 kg/m |
7.62 mm 15.27 kg/m |
| 3 1/2" | 90 | 101.6 | 2.11 mm 5.18 kg/m |
3.05 mm 7.41 kg/m |
5.74 mm 13.57 kg/m |
8.08 mm 18.64 kg/m |
| 4" | 100 | 114.3 | 2.11 mm 5.84 kg/m |
3.05 mm 8.37 kg/m |
6.02 mm 16.08 kg/m |
8.56 mm 22.32 kg/m |
| 5" | 125 | 141.3 | 2.77 mm 9.46 kg/m |
3.40 mm 11.56 kg/m |
6.55 mm 21.77 kg/m |
9.53 mm 30.97 kg/m |
| 6" | 150 | 168.3 | 2.77 mm 11.31 kg/m |
3.40 mm 13.83 kg/m |
7.11 mm 28.26 kg/m |
10.97 mm 42.56 kg/m |
| 8" | 200 | 219.1 | 2.77 mm 14.78 kg/m |
3.76 mm 19.97 kg/m |
8.18 mm 42.55 kg/m |
12.70 mm 64.64 kg/m |
| 10" | 250 | 273.0 | 3.40 mm 22.61 kg/m |
4.19 mm 27.78 kg/m |
9.27 mm 60.29 kg/m |
12.70 mm 81.53 kg/m |
| 12" | 300 | 323.8 | 3.96 mm 31.24 kg/m |
4.57 mm 35.98 kg/m |
9.53 mm 73.86 kg/m |
10.31 mm 79.73 kg/m |
| 14" | 350 | 355.6 | 3.96 mm 34.34 kg/m |
— | 9.53 mm 81.33 kg/m |
12.70 mm 107.40 kg/m |
| 16" | 400 | 406.4 | 4.19 mm 41.56 kg/m |
— | 9.53 mm 93.27 kg/m |
12.70 mm 123.31 kg/m |
| 18" | 450 | 457.0 | 4.19 mm 46.79 kg/m |
— | 9.53 mm 105.17 kg/m |
12.70 mm 139.16 kg/m |
| 20" | 500 | 508.0 | 4.78 mm 59.32 kg/m |
— | 9.53 mm 117.15 kg/m |
12.70 mm 155.13 kg/m |
| 22" | 550 | 559.0 | 4.78 mm 65.33 kg/m |
— | 9.53 mm 129.14 kg/m |
12.70 mm 171.10 kg/m |
| 24" | 600 | 610.0 | 5.54 mm 82.58 kg/m |
— | 9.53 mm 141.12 kg/m |
12.70 mm 187.07 kg/m |
Note: B36.19M uses thinner wall thicknesses (the "S" schedules) compared to B36.10M equivalents. SCH 40S/80S values match B36.10M SCH 40/80 only up to 12" NB.
Weight Calculation Formula
W (kg/m) = (OD − WT) × WT × 0.02466
Where OD = Outside Diameter (mm), WT = Wall Thickness (mm). Constant 0.02466 is derived from the carbon steel density of 7.85 g/cm³.
Material Conversion Factors
The weights in the table are based on carbon steel density (7.85 g/cm³). For other materials, multiply the Kg/m value by the factor below:
| Material Grade | Density (g/cm³) | Multiplier |
|---|---|---|
| Carbon Steel (ASTM A106, A333) | 7.85 | 1.000 |
| SS 304 / 304L / 321 / 347 | 7.96 | 1.014 |
| SS 316 / 316L / 316Ti | 8.00 | 1.019 |
| Duplex 2205 (UNS S31803 / S32205) | 7.80 | 0.994 |
| Super Duplex 2507 (UNS S32750) | 7.85 | 1.000 |
| Inconel 625 (UNS N06625) | 8.44 | 1.075 |
| Inconel 825 / 800 | 8.14 | 1.037 |
| Hastelloy C276 (UNS N10276) | 8.89 | 1.132 |
| Hastelloy C22 (UNS N06022) | 8.69 | 1.107 |
| Monel 400 (UNS N04400) | 8.80 | 1.121 |
| Nickel 200 / 201 | 8.89 | 1.132 |
| Titanium Grade 2 | 4.51 | 0.574 |
| Copper Nickel 90/10 (C70600) | 8.94 | 1.139 |
| Copper Nickel 70/30 (C71500) | 8.94 | 1.139 |
| Aluminium 6061 / 6063 | 2.70 | 0.344 |
Notes & Usage Guidance
Refer to some common notes and guidelines below.
- Weights shown are theoretical, calculated using nominal OD × WT values. Actual weight may vary within mill tolerances (±12.5% on wall thickness as per ASTM A530 / A999).
- For total weight of a pipe length: Total Weight (kg) = Kg/m × Length (metres).
- For 14" NB and above, SCH 40 / SCH 80 designations differ from STD / XS values. Always verify against the full ASME B36.10M table for large-bore applications.
- SCH 5S and SCH 10S are stainless-steel-specific lightweight schedules (ASME B36.19M). They have thinner walls than B36.10M SCH 5 / SCH 10 and are not interchangeable.
- SCH XXS (Double Extra Strong) is typically available up to 12" NB. For heavier wall requirements above this size, use SCH 160 or custom heavy-wall specifications.
- Seamless pipes above 24" NB are produced as welded pipe in most mills. Verify seamless availability with the supplier before procurement.
- For duplex, super duplex, and nickel-alloy seamless pipes, always cross-check actual density with the manufacturer’s MTC. Minor heat-to-heat variations can affect calculated weight by ±0.5%.