Need to confirm a small-bore steel pipe size before drafting, estimating, or fabrication? This reference summarizes the key dimensional terms for 3/8 inch DN10 Schedule XS pipe and explains how the listed values are used in practical piping work.
Use the dimension list and table as the primary lookup section, then review the engineering notes before comparing this pipe with another schedule. For related work, PipeSTD readers may also want to consult the site’s references for pipe schedules, NPS and DN terminology, steel pipe fittings, and flange dimensions.
Schedule XS Pipe 3/8 Inch (DN10) 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 3/8 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.
3/8 Inch Schedule XS Pipe Dimensions
- Pipe Size: 3/8 Inch
- Nominal Diameter: DN10
- Pipe Schedule: XS (Extra Strong)
- Outside Diameter (OD): 17.1 mm
- Inside Diameter (ID): 10.7 mm
- Wall Thickness: 3.2 mm
- Pipe Weight: 1.1 kg/m
- Pipe Weight Including Water: 1.18 kg/m
- Reference Standard: ANSI/ASME B36.10
Schedule XS Pipe 3/8 Inch Table
| NPS | DN | OD (mm) | ID (mm) | Wall Thickness (mm) | Weight (kg/m) |
|---|---|---|---|---|---|
| 3/8″ | 10 | 17.1 | 10.7 | 3.2 | 1.1 |
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 3/8 inch DN10 pipe, wall thickness remains important because it affects total pipe weight, handling requirements, support loads, and installation planning in real projects.
Why 3/8 Inch DN10 Pipe Dimensions Matter
Knowing the exact dimensions of 3/8 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 3/8 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 3/8 inch, the actual outside diameter is 17.1 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 3/8 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 Use This Pipe Reference
The source data separates nominal identification from physical dimensions. NPS and DN identify the nominal pipe size, while outside diameter, inside diameter, wall thickness, and weight describe the pipe that must be coordinated in drawings and project documentation.
For drafting and layout, check the outside diameter against fittings, clamps, sleeves, and clearances. For fabrication, use the wall thickness and diameter information when reviewing cutting, beveling, welding, and fit-up details. For estimating and support coordination, the listed weight provides a starting point for material takeoff and load discussions; final support and structural decisions still require project-specific engineering review.
Schedule Comparison and Design Checks
When comparing XS with another schedule, do not assume that a nominal size alone defines the opening or mass of the pipe. The schedule changes the wall thickness, which affects the inside diameter and weight. A useful comparison should therefore review the complete set of dimensions rather than comparing only the NPS or DN label.
- Confirm that the selected pipe and mating components use compatible nominal designations.
- Check the inside diameter when flow area, instrument connections, or bore clearance matters.
- Check outside diameter and wall thickness during fabrication and fit-up review.
- Use the weight information alongside the project’s support, lifting, transport, and installation requirements.
- Verify material, pressure, temperature, corrosion, joining, and code requirements separately; dimensional reference data alone does not establish design suitability.
CAD and Related Pipe References
The downloadable DWG can support drafting workflows, but the drawing should be checked against the project’s approved design basis and component details before issue for construction. Useful internal links from this page include the site’s pipe dimension and schedule references, steel pipe fitting dimensions, flange reference tables, and piping terminology guides. These related resources help readers connect a pipe’s nominal designation with the fittings, flanges, and drafting conventions used around it.
Frequently Asked Questions
What does 3/8 inch DN10 identify?
It identifies the nominal pipe size using both the NPS-style inch designation and the DN designation. The nominal label should not be treated as a direct statement of the measured inside or outside diameter.
What does XS mean for this pipe?
XS means Extra Strong. It is a pipe wall designation. For this size, the selected wall designation affects the inside diameter, weight, fabrication considerations, and support loading.
Does the outside diameter change when the schedule changes?
For comparisons within the same nominal pipe size, the outside diameter is generally treated as the consistent dimensional reference, while wall thickness, inside diameter, and weight change between schedules. Confirm the applicable reference data before using this assumption in a drawing or calculation.
Can the listed pipe weight be used for support design?
The listed weight is useful for preliminary coordination and load discussions. Support spacing and structural design also depend on the piping arrangement, contents, insulation, attachments, operating conditions, and project requirements, so they require a project-specific engineering check.
What is the DWG file useful for?
The DWG provides a starting point for CAD layout and drafting coordination. Review it against the dimension reference and the project’s approved fittings, connections, tolerances, and design documents before final use.