SS pipe size and weight chart in mm and kg/m, Sch 5S to 80S.
SS 304 pipe weight (kg/m) = (OD − t) × t × 0.02491, with OD and wall t in mm. A 2" Sch 10S SS pipe (60.3 × 2.77 mm) weighs 3.97 kg/m, so a 6 m length weighs 23.8 kg. For SS 316 multiply by 1.006. The full chart is below.
Theoretical weight from nominal size and density. Actual weight varies within mill tolerances.
My requirement list
Add items from the calculator, pipe schedules or grade finder. Send the list to Steel Impex India, or download it as a PDF estimate to share with your team. The list is saved on this device.
© 2026 Steel Impex India. The Metal Toolkit and its grade database are compiled by Steel Impex India and protected as a copyright compilation. Free to use for your own work; copying, scraping or republishing the data requires a written licence. Grade data is a guide drawn from published standards; always verify against the current edition of the standard and your purchase specification. Terms of use and licensing · Privacy
SS pipe size chart in mm with weight, SS 304 (kg/m and kg per 6 m)
Wall thickness per ASME B36.19M (Sch 40S and 80S shown up to 12"; for larger sizes confirm the wall with your supplier) and SS 304 weight at 7.93 g/cm³. For SS 316 / 316L multiply by 1.006. Theoretical weight from nominal size; actual pipe varies within the mill tolerance on wall thickness.
| Size | OD mm | Sch 5S | Sch 10S | Sch 40S | Sch 80S |
|---|---|---|---|---|---|
| 1/8" (6 NB) | 10.3 | – | 1.24 mm 0.28 kg/m · 1.7 kg/6 m | 1.73 mm 0.37 kg/m · 2.2 kg/6 m | 2.41 mm 0.47 kg/m · 2.8 kg/6 m |
| 1/4" (8 NB) | 13.7 | – | 1.65 mm 0.50 kg/m · 3.0 kg/6 m | 2.24 mm 0.64 kg/m · 3.8 kg/6 m | 3.02 mm 0.80 kg/m · 4.8 kg/6 m |
| 3/8" (10 NB) | 17.1 | – | 1.65 mm 0.64 kg/m · 3.8 kg/6 m | 2.31 mm 0.85 kg/m · 5.1 kg/6 m | 3.20 mm 1.11 kg/m · 6.6 kg/6 m |
| 1/2" (15 NB) | 21.3 | 1.65 mm 0.81 kg/m · 4.8 kg/6 m | 2.11 mm 1.01 kg/m · 6.1 kg/6 m | 2.77 mm 1.28 kg/m · 7.7 kg/6 m | 3.73 mm 1.63 kg/m · 9.8 kg/6 m |
| 3/4" (20 NB) | 26.7 | 1.65 mm 1.03 kg/m · 6.2 kg/6 m | 2.11 mm 1.29 kg/m · 7.8 kg/6 m | 2.87 mm 1.70 kg/m · 10.2 kg/6 m | 3.91 mm 2.22 kg/m · 13.3 kg/6 m |
| 1" (25 NB) | 33.4 | 1.65 mm 1.31 kg/m · 7.8 kg/6 m | 2.77 mm 2.11 kg/m · 12.7 kg/6 m | 3.38 mm 2.53 kg/m · 15.2 kg/6 m | 4.55 mm 3.27 kg/m · 19.6 kg/6 m |
| 1¼" (32 NB) | 42.2 | 1.65 mm 1.67 kg/m · 10.0 kg/6 m | 2.77 mm 2.72 kg/m · 16.3 kg/6 m | 3.56 mm 3.43 kg/m · 20.6 kg/6 m | 4.85 mm 4.51 kg/m · 27.1 kg/6 m |
| 1½" (40 NB) | 48.3 | 1.65 mm 1.92 kg/m · 11.5 kg/6 m | 2.77 mm 3.14 kg/m · 18.9 kg/6 m | 3.68 mm 4.09 kg/m · 24.5 kg/6 m | 5.08 mm 5.47 kg/m · 32.8 kg/6 m |
| 2" (50 NB) | 60.3 | 1.65 mm 2.41 kg/m · 14.5 kg/6 m | 2.77 mm 3.97 kg/m · 23.8 kg/6 m | 3.91 mm 5.49 kg/m · 33.0 kg/6 m | 5.54 mm 7.56 kg/m · 45.3 kg/6 m |
| 2½" (65 NB) | 73.0 | 2.11 mm 3.73 kg/m · 22.4 kg/6 m | 3.05 mm 5.32 kg/m · 31.9 kg/6 m | 5.16 mm 8.72 kg/m · 52.3 kg/6 m | 7.01 mm 11.52 kg/m · 69.1 kg/6 m |
| 3" (80 NB) | 88.9 | 2.11 mm 4.56 kg/m · 27.4 kg/6 m | 3.05 mm 6.52 kg/m · 39.1 kg/6 m | 5.49 mm 11.41 kg/m · 68.4 kg/6 m | 7.62 mm 15.43 kg/m · 92.6 kg/6 m |
| 3½" (90 NB) | 101.6 | 2.11 mm 5.23 kg/m · 31.4 kg/6 m | 3.05 mm 7.49 kg/m · 44.9 kg/6 m | 5.74 mm 13.71 kg/m · 82.2 kg/6 m | 8.08 mm 18.83 kg/m · 113.0 kg/6 m |
| 4" (100 NB) | 114.3 | 2.11 mm 5.90 kg/m · 35.4 kg/6 m | 3.05 mm 8.45 kg/m · 50.7 kg/6 m | 6.02 mm 16.24 kg/m · 97.4 kg/6 m | 8.56 mm 22.55 kg/m · 135.3 kg/6 m |
| 4 1/2" (115 NB) | 127.0 | – | – | 6.27 mm 18.86 kg/m · 113.2 kg/6 m | 9.02 mm 26.51 kg/m · 159.1 kg/6 m |
| 5" (125 NB) | 141.3 | 2.77 mm 9.56 kg/m · 57.4 kg/6 m | 3.40 mm 11.68 kg/m · 70.1 kg/6 m | 6.55 mm 21.99 kg/m · 131.9 kg/6 m | 9.53 mm 31.28 kg/m · 187.7 kg/6 m |
| 6" (150 NB) | 168.3 | 2.77 mm 11.42 kg/m · 68.5 kg/6 m | 3.40 mm 13.97 kg/m · 83.8 kg/6 m | 7.11 mm 28.55 kg/m · 171.3 kg/6 m | 10.97 mm 43.00 kg/m · 258.0 kg/6 m |
| 7" (175 NB) | 193.7 | – | – | 7.65 mm 35.46 kg/m · 212.7 kg/6 m | 12.70 mm 57.27 kg/m · 343.6 kg/6 m |
| 8" (200 NB) | 219.1 | 2.77 mm 14.93 kg/m · 89.6 kg/6 m | 3.76 mm 20.17 kg/m · 121.0 kg/6 m | 8.18 mm 42.98 kg/m · 257.9 kg/6 m | 12.70 mm 65.30 kg/m · 391.8 kg/6 m |
| 9" (225 NB) | 244.5 | – | – | 8.69 mm 51.05 kg/m · 306.3 kg/6 m | 12.70 mm 73.34 kg/m · 440.0 kg/6 m |
| 10" (250 NB) | 273.1 | 3.40 mm 22.84 kg/m · 137.1 kg/6 m | 4.19 mm 28.07 kg/m · 168.4 kg/6 m | 9.27 mm 60.93 kg/m · 365.6 kg/6 m | 12.70 mm 82.39 kg/m · 494.3 kg/6 m |
| 11" (275 NB) | 298.5 | – | – | 9.53 mm 68.61 kg/m · 411.6 kg/6 m | 12.70 mm 90.43 kg/m · 542.6 kg/6 m |
| 12" (300 NB) | 323.9 | 3.96 mm 31.56 kg/m · 189.4 kg/6 m | 4.57 mm 36.36 kg/m · 218.1 kg/6 m | 9.53 mm 74.64 kg/m · 447.8 kg/6 m | 12.70 mm 98.46 kg/m · 590.8 kg/6 m |
| 14" (350 NB) | 355.6 | 3.96 mm 34.69 kg/m · 208.1 kg/6 m | 4.78 mm 41.78 kg/m · 250.7 kg/6 m | – | – |
| 16" (400 NB) | 406.4 | 4.19 mm 41.98 kg/m · 251.9 kg/6 m | 4.78 mm 47.83 kg/m · 287.0 kg/6 m | – | – |
| 18" (450 NB) | 457.2 | 4.19 mm 47.29 kg/m · 283.7 kg/6 m | 4.78 mm 53.88 kg/m · 323.3 kg/6 m | – | – |
| 20" (500 NB) | 508.0 | 4.78 mm 59.93 kg/m · 359.6 kg/6 m | 5.54 mm 69.35 kg/m · 416.1 kg/6 m | – | – |
| 22" (550 NB) | 558.8 | 4.78 mm 65.97 kg/m · 395.8 kg/6 m | 5.54 mm 76.36 kg/m · 458.2 kg/6 m | – | – |
| 24" (600 NB) | 609.6 | 5.54 mm 83.37 kg/m · 500.2 kg/6 m | 6.35 mm 95.43 kg/m · 572.6 kg/6 m | – | – |
Reference basis: Compiled by Steel Impex India. Check each table’s source, product form and delivery condition before use. Sources, calculation methods and corrections.
Frequently asked questions
How do you calculate SS pipe weight?
Weight (kg/m) = π × (OD − t) × t × 7.93 / 1000 for SS 304, which is (OD − t) × t × 0.02491 with OD and wall t in mm. Use 7.98 g/cm³ for SS 316.
What is the weight of a 1 inch SS 304 Sch 40 pipe?
1" Sch 40S is 33.4 mm OD × 3.38 mm wall, about 2.53 kg/m, or 15.2 kg for a 6 m length.
What is the weight of a 4 inch SS pipe Sch 10S?
114.3 mm OD × 3.05 mm wall, about 8.45 kg/m in SS 304, or 50.7 kg for a 6 m length.
What are SS pipe sizes in mm?
SS pipe is ordered by nominal size (NB or NPS) and schedule. The outside diameter is fixed for each size: ½" (15 NB) 21.3 mm, ¾" (20 NB) 26.7 mm, 1" (25 NB) 33.4 mm, 1¼" 42.2 mm, 1½" 48.3 mm, 2" 60.3 mm, 2½" 73.0 mm, 3" 88.9 mm, 4" 114.3 mm, 6" 168.3 mm, 8" 219.1 mm, 10" 273.1 mm and 12" 323.9 mm. The schedule sets the wall thickness.
What is the thickness of SS 304 Sch 10S and Sch 40S pipe?
For 2" pipe: Sch 5S 1.65 mm, Sch 10S 2.77 mm, Sch 40S 3.91 mm and Sch 80S 5.54 mm. For 1": 1.65, 2.77, 3.38 and 4.55 mm. SS 304 and SS 316 pipes use the same ASME B36.19M walls.
Are SS tubes sized the same way as SS pipes?
No. Tubes are ordered by actual OD and wall in mm or inches (for example 25.4 × 1.65 mm or 19.05 × 1.24 mm) to ASTM A269, A249 or A213, not by NB and schedule. See the round tube weight chart for common tube sizes.
Are Sch 40S and Sch 40 the same?
Up to 10" they are the same wall. At 12", Sch 40S is 9.53 mm while Sch 40 is 10.31 mm, and Sch 80S is 12.70 mm against 17.48 mm for Sch 80.
Does Sch 40S mean SS 304 pipe?
No. Schedule identifies a wall series under the selected dimensional standard; it does not identify the alloy grade or construction. Specify the stainless grade and product standard separately.