Use this page as a quick reference when a drawing, material takeoff, or piping layout identifies 2 inch Schedule 40 pipe or DN50. The table below brings together the dimensional and weight data needed to coordinate pipe routing, fittings, supports, and fabrication details.
For related design work, compare this reference with the site’s pipe schedule dimensions, steel pipe weight tables, pipe fittings dimensions, and flange reference pages. Those resources help connect the straight-pipe data here with the components and terminology used in complete piping assemblies.
Schedule 40 pipe 2 inch (DN50) is a standard steel pipe size commonly used in piping design, fabrication, drafting, and engineering estimation work. This page provides the standard dimensions and weight data for NPS 2 Schedule 40 pipe based on ANSI / ASME B36.10, including outside diameter, inside diameter, wall thickness, and weight per meter.
This size is widely used in industrial piping systems, utility services, water lines, and fabrication projects where accurate dimensional data is important for layout, support design, material takeoff, and installation planning.
2 Inch Schedule 40 Pipe Dimensions
- Nominal Pipe Size (NPS): 2 inch
- Diameter Nominal (DN): DN50
- Pipe Schedule: Schedule 40
- Outside Diameter (OD): 60.3 mm
- Wall Thickness: 3.91 mm
- Inside Diameter (ID): 52.48 mm
- Pipe Weight: 5.44 kg/m
- Pipe Weight Including Water: 7.6 kg/m
- Reference Standard: ANSI / ASME B36.10
Schedule 40 Pipe 2 Inch (DN50) Data Table
| NPS | DN | OD (mm) | Wall Thickness (mm) | ID (mm) | Weight (kg/m) |
|---|---|---|---|---|---|
| 2 inch | DN50 | 60.3 | 3.91 | 52.48 | 5.44 |
What Is 2 Inch Schedule 40 Pipe Used For?
2 inch Schedule 40 pipe is commonly used in industrial and utility piping systems where a standardized steel pipe size is required. Engineers, designers, and fabricators often use this size in water distribution systems, cooling water piping, industrial utility lines, process piping systems, mechanical piping layouts, and fabrication work.
Because this is a practical and widely used pipe size, accurate dimensions and weight data are important for support design, installation work, material estimation, and field coordination.
Why These Dimensions Matter in Engineering
In piping and mechanical design, standard pipe dimensions are important for more than simple identification. The outside diameter is used for supports, clamps, insulation sizing, and equipment connection layouts. The inside diameter affects internal flow area and hydraulic calculations. The wall thickness is important for fabrication, welding preparation, and pipe strength, while the pipe weight per meter is essential for support load calculations and installation planning.
Using the correct DN50 Schedule 40 pipe dimensions helps reduce drafting errors, procurement mistakes, and field fit-up problems during construction and fabrication work.
2 Inch DN50 Schedule 40 Pipe for CAD and Drafting Work
For CAD, BIM, and piping drafting work, this size is commonly listed as NPS 2 or DN50. The standard OD of 60.3 mm is especially useful for routing clearance, support detailing, and nozzle or equipment connection references in both 2D drawings and 3D models.
This page can be used as a quick reference for 2 inch Schedule 40 pipe dimensions, DN50 pipe dimensions, and Schedule 40 steel pipe weight per meter during design, drafting, and estimation work.
Frequently Asked Questions
What is the outside diameter of 2 inch Schedule 40 pipe?
The outside diameter of 2 inch Schedule 40 pipe is 60.3 mm.
What is the wall thickness of DN50 Schedule 40 pipe?
The wall thickness is 3.91 mm.
What is the inside diameter of Schedule 40 pipe 2 inch?
The inside diameter is 52.48 mm.
How much does 2 inch Schedule 40 pipe weigh?
The pipe weight is 5.44 kg/m. The weight including water is 7.6 kg/m.
Which standard covers these dimensions?
These dimensions are based on ANSI / ASME B36.10.
Conclusion
Schedule 40 pipe 2 inch (DN50) is an important reference size for industrial piping, drafting, fabrication, and engineering calculations. With an OD of 60.3 mm, ID of 52.48 mm, wall thickness of 3.91 mm, and weight of 5.44 kg/m, it is a useful standard pipe size for engineers, designers, and estimators working with steel piping systems.
For more pipe schedule data, compare this size with nearby standard sizes such as 1 1/2 inch and 2 1/2 inch Schedule 40 pipe pages.
How to Read This DN50 Pipe Reference
NPS 2 and DN50 are nominal designations, so they identify the pipe size classification rather than serving as a direct statement of the measured outside diameter. For modeling and detailing, use the listed outside diameter. For internal-flow work, use the listed inside diameter and confirm that the project conditions and pipe specification are appropriate.
The schedule identifies a wall-thickness category within the applicable pipe dimension reference. It should not be treated as a complete pressure-design specification by itself. Material grade, manufacturing requirements, joining method, corrosion allowance, temperature, design pressure, and applicable project rules may also affect selection and verification.
Practical Uses for the Dimension Data
- Use the outside diameter when checking clearances, clamp and support interfaces, insulation space, and equipment connection layouts.
- Use the inside diameter as an input for flow-area and hydraulic checks, subject to the applicable engineering assumptions.
- Use the wall thickness when coordinating fabrication, welding details, and pipe-end preparation.
- Use the listed weight per meter for preliminary material estimates, handling plans, and support-load coordination. Treat the water-filled value separately from the pipe-only value.
Drafting and Procurement Checks
Before issuing a drawing or purchase request, confirm that the nominal size, schedule, material specification, end connection, length basis, and applicable standard are consistent across the model, bill of materials, and vendor documentation. A nominal-size match alone does not confirm that a fitting, flange, valve, or equipment nozzle has the required connection details.
For a broader workflow, link this page to the site’s pipe fitting dimensions, flange dimensions, pipe support design, piping isometric drafting, and DWG pipe reference resources. These links give readers a clear path from dimensional lookup to layout, detailing, and downloadable CAD coordination.
Additional Questions About 2 Inch Schedule 40 Pipe
Are NPS 2 and DN50 the same designation?
They are the corresponding nominal designations used for this pipe size in inch-based and metric-based terminology. Always use the listed dimensions when creating a model, checking clearance, or coordinating a connection.
Can the pipe-only weight be used for a filled-line support check?
No. The pipe-only weight and the listed weight including water represent different loading conditions. A support check should account for the condition being evaluated and any additional contents, insulation, valves, fittings, or other attached items.
Does Schedule 40 alone define the complete pipe specification?
No. Schedule 40 identifies the dimensional category shown on this page. The complete specification may also require material, manufacturing, joining, service, and project-specific requirements.
Should the table be used as a substitute for project specifications?
No. Use the table for dimensional reference and coordination, then verify the selected pipe and connected components against the governing project documents and engineering requirements.