Schedule XS Pipe 48 Inch (DN1200 mm) is a large steel pipe size commonly referenced in industrial piping, water transmission systems, process plants, utility lines, and heavy-duty fabrication work. This page provides a quick reference for the main dimensions and weight of 48 inch XS pipe based on ANSI/ASME B36.10.
For engineers, draftsmen, piping designers, estimators, and site teams, having a clear dimensional reference helps reduce mistakes during material selection, fabrication, transport planning, and support design. This page is intended to make the core data easier to read and more useful than a basic size listing.
48 Inch Schedule XS Pipe Dimensions
- Pipe Size: 48 Inch
- Nominal Diameter: DN1200 mm
- Pipe Schedule: XS (Extra Strong)
- Outside Diameter (OD): 1219 mm
- Inside Diameter (ID): 1193.6 mm
- Wall Thickness: 12.7 mm
- Pipe Weight: 377.81 kg/m
- Pipe Weight Including Water: 1496.18 kg/m
- Standard: ANSI/ASME B36.10
Schedule XS Pipe 48 Inch Table
| NPS | DN | OD (mm) | ID (mm) | Wall Thickness (mm) | Weight (kg/m) |
|---|---|---|---|---|---|
| 48″ | 1200 | 1219 | 1193.6 | 12.7 | 377.81 |
What Is Schedule XS Pipe?
Schedule XS means Extra Strong. It is a pipe wall designation used to identify a thicker pipe wall than lighter schedules. In piping practice, wall thickness affects internal diameter, weight, pressure-related selection, welding preparation, handling requirements, and support loading.
For large sizes such as 48 inch pipe, this information is especially important because even a small change in wall thickness can have a major effect on total weight, lifting method, structural support, and installation planning.
Why These Dimensions Matter
When working with 48 inch DN1200 Schedule XS pipe, dimensional accuracy is important for several reasons:
- Fabrication: OD and wall thickness affect cutting, rolling, beveling, and fit-up work.
- Support Design: Pipe weight per meter is needed for support spacing and structural checks.
- Flow Consideration: ID is useful for estimating flow area and hydraulic calculations.
- Transport and Lifting: Large-diameter pipes require correct weight data for handling and crane planning.
- Material Comparison: Engineers often compare XS with STD, Sch 40, Sch 60, or Sch 80 during design review.
48 Inch DN1200 XS Pipe Applications
This pipe size may be used in:
- Water transmission and intake systems
- Industrial process piping
- Power plant utility piping
- Large infrastructure projects
- Oil and gas facilities
- Custom steel fabrication and spool work
Engineering Notes
NPS stands for Nominal Pipe Size, while DN stands for Diameter Nominal in millimeters. Although the pipe is called 48 inch, the actual outside diameter is 1219 mm, which is the standardized OD used for this size. The inside diameter changes with pipe schedule because it depends on wall thickness.
That means if you compare the same 48 inch pipe in another schedule, the OD usually remains the same, but the ID, wall thickness, and weight will change.
Download and Reference
This page is useful as a quick lookup for piping design, CAD drafting, BOQ preparation, and site coordination. If you maintain downloadable technical files such as DWG drawings, size charts, or dimension references, this post can also support users looking for a reliable 48 inch Schedule XS pipe dimensions reference.
Reference Standard: ANSI/ASME B36.10