MS pipe weight chart IS 1239 light, medium and heavy.
A 50 NB (2") IS 1239 medium-class MS pipe is about 60.3 mm OD with a 3.6 mm wall and weighs 5.03 kg/m, so a 6 m length weighs 30.2 kg. The same pipe in light class (2.9 mm) weighs 4.08 kg/m and in heavy class (4.5 mm) 6.19 kg/m. The full light, medium and heavy chart for 6 to 150 NB is below.
Theoretical weight from nominal size and density. Actual weight varies within mill tolerances.
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MS pipe weight chart, IS 1239 (Part 1): wall thickness and kg/m
Light (A class, yellow band), medium (B class, blue band) and heavy (C class, red band) black MS / ERW pipes. Each cell shows the wall thickness, the plain-end weight per metre, and the weight of a 6 m length. OD is the nominal outside diameter; IS 1239 allows a small tolerance, slightly tighter for light class. Screwed and socketed pipes weigh about 1% more. Figures are the published IS 1239-1 values; confirm against the mill's test certificate for billing.
| Size | OD, mm | Light (A) | Medium (B) | Heavy (C) |
|---|---|---|---|---|
| 6 NB (⅛") | 10.2 | 1.8 mm 0.36 kg/m · 2.2 kg/6 m | 2.0 mm 0.404 kg/m · 2.4 kg/6 m | 2.6 mm 0.487 kg/m · 2.9 kg/6 m |
| 8 NB (¼") | 13.5 | 1.8 mm 0.515 kg/m · 3.1 kg/6 m | 2.3 mm 0.641 kg/m · 3.8 kg/6 m | 2.9 mm 0.765 kg/m · 4.6 kg/6 m |
| 10 NB (⅜") | 17.2 | 1.8 mm 0.67 kg/m · 4.0 kg/6 m | 2.3 mm 0.839 kg/m · 5.0 kg/6 m | 2.9 mm 1.02 kg/m · 6.1 kg/6 m |
| 15 NB (½") | 21.3 | 2.0 mm 0.947 kg/m · 5.7 kg/6 m | 2.6 mm 1.21 kg/m · 7.3 kg/6 m | 3.2 mm 1.44 kg/m · 8.6 kg/6 m |
| 20 NB (¾") | 26.9 | 2.3 mm 1.38 kg/m · 8.3 kg/6 m | 2.6 mm 1.56 kg/m · 9.4 kg/6 m | 3.2 mm 1.87 kg/m · 11.2 kg/6 m |
| 25 NB (1") | 33.7 | 2.6 mm 1.98 kg/m · 11.9 kg/6 m | 3.2 mm 2.41 kg/m · 14.5 kg/6 m | 4.0 mm 2.93 kg/m · 17.6 kg/6 m |
| 32 NB (1¼") | 42.4 | 2.6 mm 2.54 kg/m · 15.2 kg/6 m | 3.2 mm 3.1 kg/m · 18.6 kg/6 m | 4.0 mm 3.79 kg/m · 22.7 kg/6 m |
| 40 NB (1½") | 48.3 | 2.9 mm 3.23 kg/m · 19.4 kg/6 m | 3.2 mm 3.56 kg/m · 21.4 kg/6 m | 4.0 mm 4.37 kg/m · 26.2 kg/6 m |
| 50 NB (2") | 60.3 | 2.9 mm 4.08 kg/m · 24.5 kg/6 m | 3.6 mm 5.03 kg/m · 30.2 kg/6 m | 4.5 mm 6.19 kg/m · 37.1 kg/6 m |
| 65 NB (2½") | 76.1 | 3.2 mm 5.71 kg/m · 34.3 kg/6 m | 3.6 mm 6.42 kg/m · 38.5 kg/6 m | 4.5 mm 7.93 kg/m · 47.6 kg/6 m |
| 80 NB (3") | 88.9 | 3.2 mm 6.72 kg/m · 40.3 kg/6 m | 4.0 mm 8.36 kg/m · 50.2 kg/6 m | 4.8 mm 9.9 kg/m · 59.4 kg/6 m |
| 100 NB (4") | 114.3 | 3.6 mm 9.75 kg/m · 58.5 kg/6 m | 4.5 mm 12.2 kg/m · 73.2 kg/6 m | 5.4 mm 14.5 kg/m · 87.0 kg/6 m |
| 125 NB (5") | 139.7 | – | 4.8 mm 15.9 kg/m · 95.4 kg/6 m | 5.4 mm 17.9 kg/m · 107.4 kg/6 m |
| 150 NB (6") | 165.1 | – | 4.8 mm 18.9 kg/m · 113.4 kg/6 m | 5.4 mm 21.3 kg/m · 127.8 kg/6 m |
MS pipe weight: quick answers
- 15 NB (½") MS pipe weight: light 0.947 kg/m, medium 1.21 kg/m, heavy 1.44 kg/m (medium and heavy: 7.3 and 8.6 kg per 6 m).
- 20 NB (¾") MS pipe weight: light 1.38 kg/m, medium 1.56 kg/m, heavy 1.87 kg/m (medium and heavy: 9.4 and 11.2 kg per 6 m).
- 25 NB (1") MS pipe weight: light 1.98 kg/m, medium 2.41 kg/m, heavy 2.93 kg/m (medium and heavy: 14.5 and 17.6 kg per 6 m).
- 32 NB (1¼") MS pipe weight: light 2.54 kg/m, medium 3.1 kg/m, heavy 3.79 kg/m (medium and heavy: 18.6 and 22.7 kg per 6 m).
- 40 NB (1½") MS pipe weight: light 3.23 kg/m, medium 3.56 kg/m, heavy 4.37 kg/m (medium and heavy: 21.4 and 26.2 kg per 6 m).
- 50 NB (2") MS pipe weight: light 4.08 kg/m, medium 5.03 kg/m, heavy 6.19 kg/m (medium and heavy: 30.2 and 37.1 kg per 6 m).
- 65 NB (2½") MS pipe weight: light 5.71 kg/m, medium 6.42 kg/m, heavy 7.93 kg/m (medium and heavy: 38.5 and 47.6 kg per 6 m).
- 80 NB (3") MS pipe weight: light 6.72 kg/m, medium 8.36 kg/m, heavy 9.9 kg/m (medium and heavy: 50.2 and 59.4 kg per 6 m).
- 100 NB (4") MS pipe weight: light 9.75 kg/m, medium 12.2 kg/m, heavy 14.5 kg/m (medium and heavy: 73.2 and 87.0 kg per 6 m).
- 150 NB (6") MS pipe weight: medium 18.9 kg/m, heavy 21.3 kg/m (medium and heavy: 113.4 and 127.8 kg per 6 m).
For any other size or wall, enter the OD and thickness in the calculator above: weight (kg/m) = (OD − t) × t × 0.02466 for mild steel. For ASME Sch 40 and Sch 80 pipe, see the pipe weight chart by schedule.
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
What is the weight of a 1 inch MS pipe?
A 25 NB (1") IS 1239 pipe weighs 1.98 kg/m in light class (2.6 mm wall), 2.41 kg/m in medium (3.2 mm) and 2.93 kg/m in heavy (4.0 mm). A 6 m length weighs about 11.9, 14.5 and 17.6 kg.
What is the weight of a 4 inch MS pipe?
A 100 NB (4") IS 1239 pipe weighs 9.75 kg/m in light class (3.6 mm), 12.2 kg/m in medium (4.5 mm) and 14.5 kg/m in heavy (5.4 mm).
What do light, medium and heavy (A, B and C class) mean?
They are the three wall-thickness classes of IS 1239 pipe. The outside diameter is about the same; only the wall changes. Pipes are commonly marked with a colour band: yellow for light, blue for medium and red for heavy.
Is IS 1239 medium the same as Sch 40?
No. A 2" Sch 40 pipe has a 3.91 mm wall, while IS 1239 medium 50 NB is 3.6 mm and heavy is 4.5 mm. IS 1239 Part 1 covers 6 to 150 NB; larger welded pipes are usually supplied to IS 3589.
What is the weight of a GI pipe?
GI pipes are IS 1239 pipes galvanized after manufacture, so the sizes are the same. The zinc coating adds a little weight, so use the mill's published GI weight for billing.
Is medium-class MS pipe the same as Schedule 40?
No. They are separate wall-series descriptions under different standards. Compare the actual outside diameter and wall thickness for the exact size rather than substituting by name.