Steel pipes are manufactured in a range of schedules, each tailored to different applications. The term “schedule” in this context refers to the thickness of the pipe’s wall. As the schedule number increases, the wall thickness of the pipe also increases, although the outer diameter may remain constant or change according to specific customer requirements. The internal diameter of these pipes is crucial for their functionality, as it must withstand the pressures and temperatures of the intended application.
These steel pipes find a wide range of industrial applications and are in high demand commercially. For instance, Schedule 10 pipes are designed for lower-pressure applications and have thinner walls, while Schedule 40 pipes offer a middle ground in terms of wall thickness and strength. In contrast, Schedule 80 pipes possess significantly greater strength, making them suitable for high-temperature applications and environments where high pressure is a factor. The varied schedules of steel pipes thus cater to diverse needs, from light-duty to heavy-duty applications, reflecting their versatility and essential role in various industrial sectors.
Here are the dimensions for Schedule 80 steel pipes from 1/2″ to 40″ NPS, converted into millimeters:
| NPS (inches) | Outer Diameter (OD) (mm) | Inner Diameter (ID) (mm) | Wall Thickness (mm) |
|---|---|---|---|
| 0.5 | 21.34 | 13.87 | 3.73 |
| 1 | 33.40 | 25.93 | 3.73 |
| 1.5 | 48.26 | 38.10 | 5.08 |
| 2 | 60.33 | 49.25 | 5.54 |
| 2.5 | 73.02 | 59.00 | 7.01 |
| 3 | 88.90 | 73.66 | 7.62 |
| 4 | 114.30 | 97.18 | 8.56 |
| 5 | 141.30 | 122.25 | 9.52 |
| 6 | 168.27 | 146.33 | 10.97 |
| 8 | 219.08 | 193.67 | 12.70 |
| 10 | 273.05 | 242.93 | 15.06 |
| 12 | 323.85 | 288.90 | 17.48 |
| 14 | 355.60 | 317.50 | 19.05 |
| 16 | 406.40 | 363.58 | 21.41 |
| 18 | 457.20 | 409.60 | 23.80 |
| 20 | 508.00 | 455.63 | 26.19 |
| 24 | 609.60 | 547.67 | 30.96 |
| 30 | 762.00 | 690.58 | 35.71 |
| 36 | 914.40 | 835.05 | 39.67 |
| 40 | 1016.00 | 925.53 | 45.24 |
Please note that these dimensions are based on typical values and can vary slightly depending on the manufacturing standards and processes. For precise and professional usage, especially in the context of a B2B business like SteelMerge, it’s important to verify these details with the most current standards or manufacturer specifications.
