This reference page is intended for engineers, designers, fabricators, estimators, and buyers checking the dimensional relationship between NPS 10, DN250, and Schedule 80S stainless steel pipe. Use the source table for the authoritative outside diameter, inside diameter, wall thickness, and weight data, then apply those values to the specific piping, material, and service requirements of your project.
For drafting and procurement work, the nominal size identifies the pipe designation, while the schedule identifies the applicable wall-thickness series. Confirm that the selected pipe is coordinated with the connected fittings, flanges, valves, supports, welding details, and project material specification.
Schedule 80S Pipe 10 Inch (DN250) is a stainless steel pipe size commonly used in industrial piping systems where corrosion resistance, dimensional consistency, and dependable wall thickness are important. Based on the current page data under ANSI/ASME B36.19, this pipe size has an outside diameter of 273.1 mm, an inside diameter of 247.7 mm, a wall thickness of 12.7 mm, and a pipe weight of 81.56 kg/m.
10 Inch Schedule 80S Pipe Dimensions
The following values are listed for NPS 10 Schedule 80S pipe, which corresponds to DN250 in metric designation.
- Pipe Size: NPS 10 Inch
- DN Size: DN250
- Outside Diameter (OD): 273.1 mm
- Inside Diameter (ID): 247.7 mm
- Wall Thickness: 12.7 mm
- Pipe Weight: 81.56 kg/m
- Pipe Weight Including Water: 129.72 kg/m
- Reference Standard: ANSI/ASME B36.19
Schedule 80S Pipe 10 Inch (DN250) Data Table
| Pipe Schedule | NPS | DN | OD (mm) | ID (mm) | Wall Thickness (mm) | Weight (kg/m) |
|---|---|---|---|---|---|---|
| 80S | 10 Inch | 250 | 273.1 | 247.7 | 12.7 | 81.56 |
What Is Schedule 80S Pipe?
Schedule 80S is a stainless steel pipe schedule designation commonly used under ASME B36.19. In piping design and fabrication, the schedule identifies the wall thickness series for a given nominal pipe size. This helps engineers, buyers, and fabricators confirm dimensional compatibility, estimate pipe weight, and coordinate with fittings, flanges, and supports.
Common Uses of 10 Inch Schedule 80S Pipe
10 inch Schedule 80S pipe is commonly used in stainless steel piping systems that require good corrosion resistance, dependable wall thickness, and solid flow capacity. This size is often selected for industrial projects where standard dimensions are needed for design, fabrication, procurement, and installation work.
- Process piping systems in chemical and industrial plants
- Water transmission lines for medium-flow industrial service
- Cooling water and utility piping in plant facilities
- Marine and offshore piping where stainless steel is preferred
- Food and beverage plants requiring corrosion-resistant piping materials
- Pharmaceutical facilities using stainless steel process lines
- Pump suction and discharge piping for process systems
- Pipeline upgrade and replacement work where standard pipe dimensions are required
In practical engineering work, this pipe size may be checked when reviewing flow area, piping layout, support loading, transport weight, and installation requirements. Final pipe selection should always be verified against project pressure, temperature, fluid type, and material specifications.
Why OD, ID, Thickness, and Weight Matter
Exact OD, ID, wall thickness, and weight values are important for pipe support design, material take-off, transport planning, welding preparation, and installation work. Weight data is also useful for lifting calculations and total piping load estimates, while inside diameter affects flow calculations and system capacity review.
NPS 10 and DN250 Explained
NPS means nominal pipe size in inch units, while DN means diameter nominal in metric units. The current page identifies this pipe as NPS 10 and DN250, which is the standard naming format widely used in piping drawings, isometrics, and procurement specifications.
Conclusion
Schedule 80S Pipe 10 Inch (DN250) is listed on the current page with 273.1 mm OD, 247.7 mm ID, 12.7 mm wall thickness, and 81.56 kg/m weight. It is a useful stainless steel pipe reference for piping engineers, designers, and buyers who need standard dimensional and weight data for project planning and material selection.
How to Read This Schedule 80S Pipe Reference
The dimensional table should be read as a coordinated set of values rather than as isolated measurements. The outside diameter is important when checking fit-up, clearances, clamps, sleeves, supports, and connections. The inside diameter is the relevant geometric reference for flow-area reviews, while wall thickness supports fabrication checks and dimensional coordination.
The listed pipe weight is useful for material takeoffs, handling plans, support-load reviews, and transport estimates. The separate water-inclusive value should not be confused with the dry pipe weight: it represents the pipe together with its internal water content as listed in the source data. Actual operating loads may also require consideration of insulation, lining, valves, fittings, fluid density, and other attached items.
Important Design and Procurement Checks
- Confirm that the NPS and DN designations match the project drawings, piping classes, and purchase description.
- Check that connected fittings and flanges use compatible dimensional designations and material requirements.
- Use the stated inside diameter only for the applicable dimensional reference; flow, pressure loss, velocity, and capacity reviews require project-specific fluid and operating data.
- Do not treat the schedule designation alone as a pressure rating. Pressure-temperature limits depend on the applicable material, product specification, joining method, design code, and service conditions.
- Verify stainless steel grade, corrosion requirements, surface condition, testing, and certification separately because the dimensional schedule does not define every procurement requirement.
Useful Related Reference Topics
This page works well alongside internal references covering pipe schedules, NPS and DN conversion terminology, stainless steel pipe dimensions, flange dimensions, butt-weld fittings, pipe weight calculations, and piping isometric drafting. Those links can help readers move from a single pipe-size lookup to connection selection, layout coordination, and quantity planning.
Frequently Asked Questions
What does Schedule 80S mean for this pipe?
Schedule 80S is a stainless steel pipe wall-thickness series associated on this page with ASME B36.19 dimensional data. It helps identify the applicable pipe dimensions for the stated nominal size, but it is not by itself a complete pressure-rating designation.
Is NPS 10 the same designation as DN250?
On this page, NPS 10 and DN250 identify the same nominal pipe size using inch-based and metric-based naming conventions. The nominal designation should still be checked against the project standard and connected component descriptions.
Which dimension should be used for flow-area review?
The inside diameter is the geometric dimension used as the starting reference for flow-area calculations. Final flow and pressure-loss evaluations also require project-specific fluid, temperature, roughness, and operating information.
Why is pipe weight important?
Pipe weight supports material takeoffs, lifting and transport planning, support-load reviews, and installation coordination. The dry pipe weight and the listed pipe weight including water represent different loading conditions.
Does Schedule 80S determine the stainless steel grade?
No. The schedule identifies a dimensional wall-thickness series for the stated pipe size. The stainless steel grade, corrosion suitability, testing, certification, and other procurement requirements must be specified and verified separately.