This reference is intended for engineers, detailers, estimators, fabricators, and inspectors who need a quick way to interpret 2 inch DN50 Schedule XXS pipe data. The table and listed values below are the page’s controlling technical data; the editorial notes explain how to use that information during piping and fabrication work.
Use the outside diameter for layout and connection checks, the inside diameter for flow-related review, and the wall thickness and mass data for fabrication, support, lifting, and material planning. For broader comparisons, this page can be used alongside the site’s pipe schedule reference, NPS-to-DN terminology guide, and pipe weight resources.
Schedule XXS Pipe 2 Inch (DN50) is a heavy-wall steel pipe size used in industrial piping systems, plant construction, high-duty utility lines, and fabrication work. This page provides a practical reference for the main dimensions and weight of 2 inch XXS pipe based on ANSI/ASME B36.10.
For piping engineers, 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 XXS Pipe Dimensions
- Pipe Size: 2 Inch
- Nominal Diameter: DN50
- Pipe Schedule: XXS (Double Extra Strong)
- Outside Diameter (OD): 60.3 mm
- Inside Diameter (ID): 38.16 mm
- Wall Thickness: 11.07 mm
- Pipe Weight: 13.44 kg/m
- Pipe Weight Including Water: 14.58 kg/m
- Reference Standard: ANSI/ASME B36.10
Schedule XXS Pipe 2 Inch Table
| NPS | DN | OD (mm) | ID (mm) | Wall Thickness (mm) | Weight (kg/m) |
|---|---|---|---|---|---|
| 2″ | 50 | 60.3 | 38.16 | 11.07 | 13.44 |
What Does Schedule XXS Mean?
Schedule XXS means Double Extra Strong. It is a heavy-wall pipe designation used for applications that need thicker pipe walls than standard or lighter schedules. A thicker wall affects the inside diameter, pipe weight, fabrication requirements, support loading, and handling during installation.
For a size such as 2 inch DN50 pipe, the jump to XXS creates a much heavier pipe than lighter schedules, so correct dimension and weight data are important for design, lifting, and field work.
Why 2 Inch DN50 XXS Pipe Dimensions Matter
Knowing the exact dimensions of 2 inch Schedule XXS 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: Heavy-wall pipes require accurate weight data for safer handling and crane planning.
- Schedule Comparison: Engineers often compare XXS with XS, STD, Sch 80, Sch 160, or other heavy-wall options during design review.
Typical Applications of 2 Inch Schedule XXS Pipe
This pipe size may be used in:
- Heavy-duty industrial piping
- High-pressure process systems
- Power and utility projects
- Plant piping works
- Oil and gas facilities
- 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 the 2 Inch XXS Pipe Data
NPS and DN are nominal designations rather than direct measurements of the pipe’s outside diameter. The listed outside diameter is therefore the key dimension for many layout, fitting, and clearance checks, while the schedule identifies the wall-thickness series.
For this XXS pipe, the wall is substantially heavier than lighter schedule options for the same nominal size. That changes the available internal bore and increases the mass that must be considered during handling and support design. When comparing alternatives, review the complete set of outside diameter, inside diameter, wall thickness, and weight values rather than comparing schedule names alone.
Practical Checks Before Using the Dimensions
- Connection review: Confirm that mating fittings, flanges, valves, and branch components use compatible nominal size and outside-diameter requirements.
- Fabrication review: Use the listed wall thickness with the applicable shop procedures for cutting, beveling, welding, and inspection. Fabrication details should follow the project specification.
- Load review: Include the listed pipe mass and any contents, insulation, valves, fittings, or other attached items when checking supports and lifting arrangements.
- Flow review: Treat the listed inside diameter as the dimensional basis for preliminary bore and flow-area checks. Final hydraulic decisions require the project’s operating conditions and design method.
- Procurement review: Verify the ordered material description, material grade, manufacturing requirements, end preparation, and inspection requirements against the project documents. Dimensions alone do not establish material or pressure-service suitability.
Related Pipe and CAD References
Readers comparing this size with other wall series may also benefit from the site’s pipe schedule comparison guide. Connection design can be supported by related flange dimension references and pipe fitting terminology pages, while drafting teams can use the downloadable 2 inch DN50 Schedule XXS DWG as a starting reference. Always check the project model and approved supplier documentation before issuing fabrication drawings.
Frequently Asked Questions
What does XXS mean for this pipe?
XXS means Double Extra Strong, a heavy-wall pipe designation. Compared with lighter wall options for the same nominal size, it generally provides a smaller internal bore and greater pipe mass. The page table should be used for the specific dimensional values.
Is 2 inch pipe the same as a 60.3 mm outside diameter?
Not exactly. The 2 inch designation is a nominal pipe size. The listed outside diameter is the actual dimensional reference for this pipe and should be used for layout, clearance, and connection checks.
Why are both inside diameter and wall thickness listed?
Wall thickness describes the pipe section between the outside and inside surfaces, while inside diameter describes the available bore. Both are needed because schedule changes affect the internal opening and the pipe’s mass.
Can the listed weight be used for support design?
It can provide the pipe-mass input for preliminary review, but support design must also consider contents, fittings, valves, insulation, spacing, operating conditions, and the governing project requirements.
Is the DWG file sufficient for fabrication?
The DWG is a useful dimensional reference, but it should not replace approved project drawings, supplier documentation, welding procedures, inspection requirements, or field verification.