This reference is intended for engineers, designers, fabricators, estimators, and CAD users who need a quick check of NPS 10 Schedule 140 pipe. Use the table for dimensional lookups, then review the explanatory notes before applying the data to drawings, quantity estimates, supports, or installation planning.
For related work, this page can be read alongside references for pipe schedules, nominal pipe size and DN, steel pipe dimensions, pipe weight calculations, and DWG piping details.
Schedule 140 pipe 10 inch (DN250) is a heavy-wall steel pipe size commonly used in piping design, fabrication, drafting, and engineering estimation work. This page provides the standard dimensions, wall thickness, inside diameter, and weight per meter for NPS 10 Schedule 140 pipe based on ASME B36.10.
10 Inch Schedule 140 Pipe Dimensions
- Nominal Pipe Size (NPS): 10 inch
- Diameter Nominal (DN): DN250
- Outside Diameter (OD): 273.1 mm
- Wall Thickness: 25.4 mm
- Inside Diameter (ID): 222.2 mm
- Pipe Weight: 155.1 kg/m
- Pipe Weight Filled With Water: 193.85 kg/m
- Reference Standard: ASME B36.10
- Pipe Type: Steel Pipe
Schedule 140 Pipe 10 Inch Data Table
| Pipe Size | DN | OD (mm) | Wall Thickness (mm) | ID (mm) | Weight (kg/m) |
|---|---|---|---|---|---|
| 10 inch | 250 | 273.1 | 25.4 | 222.2 | 155.1 |
What Does Schedule 140 Mean?
Schedule 140 refers to a very heavy wall thickness series used for steel pipe under ASME B36.10. For the same nominal pipe size, the outside diameter remains fixed while the wall thickness increases according to the schedule. A thicker wall reduces the inside diameter and significantly increases pipe weight.
Typical Uses of 10 Inch Schedule 140 Pipe
NPS 10 Schedule 140 pipe is commonly referenced for heavy-duty industrial piping systems where very high wall thickness is required. It may be used in process piping, plant utility systems, structural loading checks, fabrication work, and engineering applications where pipe strength and wall thickness are more critical than maximum flow area.
Why Pipe Weight Matters
Pipe weight per meter is essential for transport planning, crane lifting studies, support design, structural loading, fabrication estimates, and installation planning. For a 10 inch Schedule 140 pipe, the heavy wall thickness results in much higher installed weight than lighter schedules, so accurate weight data is important for engineering and construction work.
10 Inch Schedule 140 Pipe Calculation Notes
The listed weight is based on standard steel pipe dimensions using the outside diameter and wall thickness of the pipe. Actual product weight may vary slightly depending on manufacturing tolerance, material specification, and supplier standard.
Frequently Asked Questions
What is the outside diameter of 10 inch Schedule 140 pipe?
The outside diameter is 273.1 mm.
What is the wall thickness of DN250 Schedule 140 pipe?
The wall thickness is 25.4 mm.
What is the inside diameter of NPS 10 Schedule 140 pipe?
The inside diameter is 222.2 mm.
How much does 10 inch Schedule 140 pipe weigh?
The approximate weight is 155.1 kg/m.
Which standard covers this pipe size?
This dimension data is based on ASME B36.10 for steel pipe.
Conclusion
Schedule 140 pipe 10 inch (DN250) has an outside diameter of 273.1 mm, wall thickness of 25.4 mm, inside diameter of 222.2 mm, and a weight of 155.1 kg/m. It is a useful reference for piping design, fabrication, estimating, and heavy-duty industrial engineering work.
How to Use This Pipe Reference
Start with the nominal designation shown in the source table, then confirm the outside diameter, wall thickness, and inside diameter required by the drawing or calculation. The nominal size is a designation rather than a direct statement of the measured outside or inside diameter, so fabrication and modeling work should use the listed dimensional values.
Dimension checks for drafting
When creating a CAD representation, the outside diameter controls the external envelope, while the wall thickness establishes the internal bore. The inside diameter is particularly important when checking clearances, flow-path geometry, mating components, and the visual accuracy of a sectioned or detailed drawing.
Weight checks for project planning
The tabulated mass per meter is useful for material takeoffs, support-load reviews, lifting studies, transport planning, and installation estimates. It should not be treated as a complete installed-load assessment: fittings, flanges, valves, coatings, insulation, contents, and support conditions may need separate consideration.
Schedule designation and engineering decisions
A schedule identifies a wall-thickness series for a nominal pipe size. It does not, by itself, establish the allowable pressure, temperature limit, corrosion allowance, material grade, joining method, or complete design suitability. Those decisions require the applicable design code, material specification, service conditions, and project requirements.
Related Reference Topics
- Pipe schedule comparison for reviewing wall-thickness changes within the same nominal size
- NPS, DN, outside diameter, and inside diameter terminology
- Steel pipe weight and filled-pipe load estimation
- Pipe fittings and flange dimensions for connection layout
- CAD and DWG resources for piping design documentation
Editorial FAQs
Is the nominal size the same as the measured pipe diameter?
No. NPS and DN are standardized identification designations. For fabrication, modeling, and dimensional checks, use the applicable outside diameter, wall thickness, and inside diameter listed in the reference data.
Does Schedule 140 alone determine whether the pipe can be used for a service?
No. Schedule describes the wall-thickness series, but service suitability also depends on material, design conditions, corrosion considerations, joining requirements, code rules, and project specifications.
Why should pipe weight be checked separately from dimensions?
Dimensions define the pipe geometry, while weight affects handling, supports, lifting, transport, and structural reviews. The pipe-only value may not represent the total installed system load.
What should a CAD drafter verify before issuing a piping drawing?
Verify the nominal designation, outside diameter, wall thickness, inside diameter, connection details, material requirements, and the project or supplier documentation governing the component.