This reference is intended for engineers, designers, estimators, fabricators, and installers who need a quick way to interpret 2 inch DN50 Schedule XS pipe data. Use the dimension list and table below to distinguish nominal size from actual outside diameter, inside diameter, wall thickness, and listed pipe weight.
The accompanying DWG resource can support drafting and layout workflows, while the dimensional information can help with material takeoffs, fabrication checks, support-load reviews, and preliminary coordination. Confirm project specifications, material requirements, joining details, and design conditions before using the data for procurement or final engineering.
Schedule XS Pipe 2 Inch (DN50) is a steel pipe size commonly used in industrial piping systems, utility lines, water transmission projects, plant construction, and fabrication work. This page provides a practical reference for the main dimensions and weight of 2 inch XS pipe based on ANSI/ASME B36.10.
For piping engineers, CAD designers, estimators, fabrication teams, and site supervisors, accurate pipe size data is important for layout work, material takeoff, support design, transport planning, and installation checks. This guide presents the essential dimensions in a cleaner format that adds more value than a simple size table.
2 Inch Schedule XS Pipe Dimensions
- Pipe Size: 2 Inch
- Nominal Diameter: DN50
- Pipe Schedule: XS (Extra Strong)
- Outside Diameter (OD): 60.3 mm
- Inside Diameter (ID): 49.22 mm
- Wall Thickness: 5.54 mm
- Pipe Weight: 7.48 kg/m
- Pipe Weight Including Water: 9.38 kg/m
- Reference Standard: ANSI/ASME B36.10
Schedule XS Pipe 2 Inch Table
| NPS | DN | OD (mm) | ID (mm) | Wall Thickness (mm) | Weight (kg/m) |
|---|---|---|---|---|---|
| 2″ | 50 | 60.3 | 49.22 | 5.54 | 7.48 |
What Does Schedule XS Mean?
Schedule XS stands for Extra Strong. It is a pipe wall designation used in steel pipe standards. The selected schedule affects the wall thickness, which directly affects the inside diameter, pipe weight, fabrication requirements, and support loading.
For a size such as 2 inch DN50 pipe, wall thickness remains important because it affects total pipe weight, handling requirements, support loads, and installation planning in real projects.
Why 2 Inch DN50 Pipe Dimensions Matter
Knowing the exact dimensions of 2 inch Schedule XS pipe is useful for several engineering and construction tasks:
- Fabrication: OD and wall thickness are needed for cutting, beveling, welding, and fit-up work.
- Support Design: Pipe weight per meter helps engineers check support spacing and structural loads.
- Flow Review: ID is useful for estimating internal flow area and hydraulic performance.
- Transport and Lifting: Accurate weight data supports safer handling and planning.
- Schedule Comparison: Engineers often compare XS with STD, Sch 40, Sch 60, or Sch 80 during design review.
Typical Applications of 2 Inch Schedule XS Pipe
This pipe size may be used in:
- Industrial process piping
- Water transmission systems
- Power and utility projects
- Plant piping works
- Infrastructure construction
- Custom steel fabrication and spool projects
Engineering Notes
NPS means Nominal Pipe Size, while DN means Diameter Nominal. Although this pipe is called 2 inch, the actual outside diameter is 60.3 mm according to the standard. The inside diameter changes with the pipe schedule because wall thickness changes from one schedule to another.
That means if you compare the same 2 inch pipe in a different schedule, the OD usually stays the same, while the ID, wall thickness, and pipe weight will change.
Reference
The dimension data on this page is based on ANSI/ASME B36.10, which is widely used for steel pipe dimensions in industrial applications.
How to Read This 2 Inch XS Pipe Reference
The term 2 inch identifies the nominal pipe size, while DN50 is the corresponding nominal designation used in metric-oriented documentation. These labels should not be treated as the measured outside or inside diameter. For fabrication and drafting, use the listed OD, ID, and wall thickness rather than relying on the nominal size alone.
Schedule XS describes the extra-strong wall designation. In practical terms, the schedule is important when checking fit-up, connection details, weight, handling, and available internal bore. A schedule comparison should therefore review all affected dimensions and weights together, not just the schedule name.
Using the Data in Design and Drafting Work
- Use the outside diameter when coordinating clamps, sleeves, supports, clearances, and external pipe interfaces.
- Use the inside diameter when reviewing the internal passage and preparing preliminary flow-area or hydraulic checks.
- Use the wall thickness when checking fabrication details, bevel preparation, weld fit-up, and schedule compatibility.
- Use the listed pipe weight for material estimates and as an input to support and handling reviews.
- Use the stated weight including water when considering the additional load associated with a water-filled line, subject to the project calculation basis.
Related Pipe Reference Topics
For broader piping research, this page can be used alongside references covering pipe schedules, NPS and DN terminology, steel pipe fittings, pipe flanges, and pipe support design. The downloadable DWG is especially relevant to CAD users who need a drawing reference while developing layouts, spool drawings, or coordination details.
Dimension tables are reference data, not a substitute for checking the governing project specification. Verify the selected pipe, fittings, valves, flanges, joining method, corrosion allowance, design conditions, and applicable fabrication requirements before release for construction.
Frequently Asked Questions
What is the actual outside diameter of 2 inch Schedule XS pipe?
The actual outside diameter is the OD listed in the dimension section and table. It is not the same as the nominal two-inch designation.
Does Schedule XS change the outside diameter?
For the same nominal pipe size, schedule changes primarily affect wall thickness, inside diameter, and pipe weight. The source notes that the outside diameter usually remains the same when comparing schedules for that size; confirm the applicable dimensional reference for the specific product.
What does DN50 mean?
DN50 is the Diameter Nominal designation associated with this pipe size. It is a nominal identification system, so it should not be used as a substitute for the listed measured dimensions.
What is the DWG file used for?
The downloadable DWG provides a CAD reference for drafting and coordination. Review its geometry against the page data and project requirements before using it in fabrication or construction documents.
Can this page be used for final pipe design?
It can serve as a dimensional reference, but final design requires project-specific verification of material, pressure and temperature conditions, loads, connections, corrosion requirements, code compliance, and installation conditions.