2 inch (DN 50) pipe dimensions & weight
2 inch (DN 50) steel pipe has an outside diameter of 60.3 mm (2.374 in) in every schedule. Below: wall thickness, inside diameter, weight per metre and water capacity for each ASME B36.10M / B36.19M schedule.
| Schedule | Wall (mm) | Wall (in) | ID (mm) | CS kg/m | CS lb/ft | SS 304 kg/m | Water L/m |
|---|---|---|---|---|---|---|---|
| Sch 5S | 1.65 | 0.065 | 57.00 | 2.39 | 1.61 | 2.41 | 2.55 |
| Sch 10S | 2.77 | 0.109 | 54.76 | 3.93 | 2.64 | 3.97 | 2.36 |
| STD | 3.91 | 0.154 | 52.48 | 5.44 | 3.66 | 5.50 | 2.16 |
| Sch 40 | 3.91 | 0.154 | 52.48 | 5.44 | 3.66 | 5.50 | 2.16 |
| XS | 5.54 | 0.218 | 49.22 | 7.48 | 5.03 | 7.56 | 1.90 |
| Sch 80 | 5.54 | 0.218 | 49.22 | 7.48 | 5.03 | 7.56 | 1.90 |
| Sch 160 | 8.74 | 0.344 | 42.82 | 11.11 | 7.47 | 11.22 | 1.44 |
| XXS | 11.07 | 0.436 | 38.16 | 13.44 | 9.03 | 13.58 | 1.14 |
CS = carbon steel (7.85 g/cm³). SS 304 at 7.93 g/cm³; for 316 multiply CS weight by 1.017. Water capacity = internal volume per metre.
Matching 2" flanges and fittings
| Class 150 flange | OD 150 mm · thk 17.5 mm · PCD 120.7 mm · 4 × 5/8" bolts |
| Class 300 flange | OD 165 mm · thk 20.7 mm · PCD 127.0 mm · 8 × 5/8" bolts |
| B16.9 fittings | 90° LR 76 mm · 45° LR 35 mm · 90° SR 51 mm · tee 64 mm · reducer 76 mm · cap 38 mm |
Full tables: Class 150 · Class 300 · B16.9 fittings.
Frequently asked questions
What is the OD of 2 inch pipe?
2 inch (DN 50) pipe has an outside diameter of 60.3 mm (2.374 in), regardless of schedule.
What is the wall thickness of 2 inch Schedule 40 pipe?
3.91 mm (0.154 in), giving an inside diameter of 52.48 mm.
How much does 2 inch Schedule 40 pipe weigh?
About 5.44 kg/m (3.66 lb/ft) in carbon steel, or 32.6 kg for a 6 m length.
What is the wall thickness of 2 inch Schedule 80 pipe?
5.54 mm, with an inside diameter of 49.22 mm and weight of 7.48 kg/m.
Last updated 2026-11-02