3/8 inch pipe (DN 10): outside diameter, wall thickness and weight by schedule
A 3/8 inch pipe (DN 10) has a 17.1 mm (0.675 in) outside diameter in every schedule: what changes is the wall, and with it the inside diameter and the weight. Designations that give the same wall share a row.
| Schedule | Wall | ID | Weight |
|---|---|---|---|
| Sch 10 / 10S | 1.65 mm (0.065 in) | 13.80 mm (0.545 in) | 0.63 kg/m (0.42 lb/ft) |
| Sch 30 | 1.85 mm (0.073 in) | 13.40 mm (0.529 in) | 0.70 kg/m (0.47 lb/ft) |
| Sch 40 / STD / 40S | 2.31 mm (0.091 in) | 12.48 mm (0.493 in) | 0.84 kg/m (0.57 lb/ft) |
| Sch 80 / XS / 80S | 3.20 mm (0.126 in) | 10.70 mm (0.423 in) | 1.10 kg/m (0.74 lb/ft) |
| Sch 160 | 4.01 mm (0.158 in) | 9.08 mm (0.359 in) | 1.29 kg/m (0.87 lb/ft) |
| XXS | 6.40 mm (0.252 in) | 4.30 mm (0.171 in) | 1.69 kg/m (1.14 lb/ft) |
Plain-end weight of carbon steel pipe, by the standard's own formula: 10.69 × (D − t) × t in lb/ft, with D and t in inches (0.0246615 × (D − t) × t in kg/m, in mm). Austenitic stainless weighs about 2% more.
Lay out on 3/8 inch pipe
The outside diameter and the wall of the chosen schedule go to the calculator, which opens with them filled in and draws without an account.
Questions
- What is the outside diameter of 3/8 inch pipe?
- 17.1 mm (0.675 in), in any schedule: it is the DN 10 pipe of ASME B36.10M. The wall changes with the schedule, and the inside diameter with it.
- What is the wall thickness of 3/8 inch schedule 40 pipe?
- 2.31 mm (0.091 in), with an inside diameter of 12.48 mm (0.493 in); carbon steel pipe weighs 0.84 kg/m (0.57 lb/ft).
- What is the difference between schedule 40 and 80 in 3/8 inch pipe?
- The wall: 2.31 mm (0.091 in) in schedule 40 and 3.20 mm (0.126 in) in 80. The outside diameter is the same, so schedule 80 has the smaller bore -- 10.70 mm (0.423 in) against 12.48 mm (0.493 in) -- and weighs 1.10 kg/m (0.74 lb/ft) against 0.84 kg/m (0.57 lb/ft).