Use this page as a quick reference when checking 46 inch Schedule XS pipe dimensions for layouts, material takeoffs, fabrication reviews, and project coordination. The table and summary below provide the listed outside diameter, inside diameter, wall thickness, and weight for this nominal pipe size.
For related design work, compare this reference with the site’s resources on pipe schedules, NPS and DN terminology, pipe weight calculations, flange dimensions, and CAD/DWG pipe details. Always match the dimensional reference with the project specification, material requirements, joining method, and applicable inspection requirements.
Schedule XS Pipe 46 Inch (DN1150) is a large steel pipe size used in industrial piping systems, utility lines, water transmission projects, plant construction, and heavy fabrication work. This page provides a clear reference for the main dimensions and weight of 46 inch XS pipe based on ANSI/ASME B36.10.
For piping engineers, designers, estimators, site supervisors, and fabrication teams, accurate pipe dimension data is important for layout work, material takeoff, support design, transport planning, and installation review. This guide presents the essential size data in a simple format that is easier to use in real projects.
46 Inch Schedule XS Pipe Dimensions
- Pipe Size: 46 Inch
- Nominal Diameter: DN1150
- Pipe Schedule: XS (Extra Strong)
- Outside Diameter (OD): 1168 mm
- Inside Diameter (ID): 1142.6 mm
- Wall Thickness: 12.7 mm
- Pipe Weight: 361.84 kg/m
- Pipe Weight Including Water: 1386.68 kg/m
- Reference Standard: ANSI/ASME B36.10
Schedule XS Pipe 46 Inch Table
| NPS | DN | OD (mm) | ID (mm) | Wall Thickness (mm) | Weight (kg/m) |
|---|---|---|---|---|---|
| 46″ | 1150 | 1168 | 1142.6 | 12.7 | 361.84 |
What Does Schedule XS Mean?
Schedule XS stands for Extra Strong. It is a pipe wall classification used in steel pipe standards. The schedule affects the wall thickness, which then affects the inside diameter, pipe weight, and the overall handling and design considerations of the pipe.
For large sizes such as 46 inch DN1150 pipe, this becomes especially important because thicker walls increase total weight significantly and can affect lifting plans, support loads, and fabrication requirements.
Why 46 Inch DN1150 Pipe Dimensions Matter
Knowing the exact dimensions of 46 inch Schedule XS pipe helps in many parts of piping work:
- Fabrication: OD and wall thickness are needed for cutting, beveling, welding, and fit-up.
- Support Design: Pipe weight per meter is used when checking supports and structural loads.
- Flow Estimation: ID is useful for flow area and hydraulic review.
- Transport and Lifting: Large pipe sections require accurate weight data for safe handling.
- Material Comparison: Engineers often compare XS pipe with STD, Sch 40, Sch 60, or Sch 80 depending on design needs.
Typical Applications of 46 Inch Schedule XS Pipe
This pipe size may be used in:
- Industrial process piping
- Water transmission systems
- Power and utility projects
- Large plant piping works
- Infrastructure construction
- Fabricated spool and custom steel projects
Engineering Notes
NPS means Nominal Pipe Size, while DN means Diameter Nominal. Although this pipe is referred to as 46 inch, the actual outside diameter is 1168 mm according to the standard. The inside diameter changes with the pipe schedule because wall thickness changes from one schedule to another.
In other words, if you compare the same 46 inch pipe in a different schedule, the OD usually stays the same, but the ID, wall thickness, and weight will change.
Reference
The dimension data on this page is based on ANSI/ASME B36.10, which is widely used for carbon steel pipe dimensions in industrial applications.
How to Use This 46 Inch XS Pipe Reference
The listed outside diameter is the primary envelope dimension for layout, clearances, clamps, sleeves, and connection coordination. The inside diameter describes the available internal passage and is relevant to flow-area reviews and hydraulic calculations. Because the schedule identifies the wall classification, it also affects the relationship between the outside diameter, inside diameter, and pipe mass.
The listed pipe weight is useful for estimating support reactions, handling requirements, transport planning, and fabricated spool reviews. The water-filled weight is a separate planning value that helps teams consider the additional contents load during installation or service review. These values should not be treated as a complete design load case; supports, anchors, guides, insulation, coatings, fittings, valves, fluid properties, and operating conditions may require separate evaluation.
Coordination Checks Before Fabrication
- Confirm that the nominal size and XS designation match the approved piping class and material requisition.
- Use the outside diameter when checking physical clearances and the inside diameter when reviewing passage or hydraulic assumptions.
- Coordinate the pipe dimensions with fittings, flanges, valves, reducers, and equipment nozzles rather than relying on nominal size alone.
- Check whether the drawing requires fabrication allowances, end preparation, lining, coating, or other project-specific details.
- Use the downloadable DWG as a drafting aid, then verify geometry and project requirements before issuing fabrication documents.
For broader reference, this page can be paired with a pipe schedule comparison when reviewing STD, Sch 40, Sch 60, or Sch 80 alternatives. A pipe support design guide and large-diameter pipe handling reference can also help connect the tabulated dimensions with field planning without replacing project engineering review.
Frequently Asked Questions
What is the outside diameter of 46 inch Schedule XS pipe?
The listed outside diameter is 1168 mm. Outside diameter is commonly used for layout, clearance, and connection coordination.
What is the inside diameter of 46 inch DN1150 XS pipe?
The listed inside diameter is 1142.6 mm. The inside diameter is associated with the internal flow passage and changes when wall thickness changes.
What does XS mean in pipe dimensions?
XS means Extra Strong. It identifies a pipe wall classification and affects wall thickness, inside diameter, and pipe weight.
Why is the 46 inch pipe designation different from its actual outside diameter?
NPS is a nominal designation, so the stated inch size does not necessarily equal the measured outside diameter. For this pipe, the reference data identifies the nominal size as 46 inch and the outside diameter as 1168 mm.
What is the listed weight of this pipe?
The listed pipe weight is 361.84 kg/m. The page also provides a separate water-filled weight of 1386.68 kg/m for load and handling reference.
Can this reference be used for a pressure design?
It provides dimensional and weight information, but it is not a complete pressure-design calculation. Pressure design requires review of the applicable material, design conditions, joining details, corrosion or fabrication allowances, and project requirements by a qualified engineer.
Is a DWG available for this pipe size?
Yes. The page includes a downloadable DWG reference for Schedule XS Pipe 46 Inch DN1150. Confirm the drawing against the approved project model and fabrication requirements before use.