This reference page is intended for engineers, designers, drafters, fabricators, estimators, and procurement teams checking 3 inch Schedule 10S stainless steel pipe. Use the dimensional table to distinguish the nominal size from the measured outside diameter, wall thickness, and inside diameter used in drawings, takeoffs, and coordination with fittings.
For related work, compare this entry with the site’s resources on pipe schedules, stainless steel pipe dimensions, pipe fittings, and flange dimensions. Those references help connect straight-pipe dimensions with the components and terminology used in a complete piping system.
Schedule 10S pipe 3 inch (DN80) is a stainless steel pipe size commonly used in piping design, fabrication, drafting, and engineering reference work. This page provides the standard dimensions, wall thickness, inside diameter, and weight per meter for NPS 3 Schedule 10S pipe based on ASME B36.19.
3 Inch Schedule 10S Pipe Dimensions
- Nominal Pipe Size (NPS): 3 inch
- Diameter Nominal (DN): DN80
- Outside Diameter (OD): 88.9 mm
- Wall Thickness: 3.05 mm
- Inside Diameter (ID): 82.8 mm
- Pipe Weight: 6.46 kg/m
- Pipe Weight Filled With Water: 11.84 kg/m
- Reference Standard: ASME B36.19
- Pipe Type: Stainless Steel Pipe
Schedule 10S Pipe 3 Inch Data Table
| Pipe Size | DN | OD (mm) | Wall Thickness (mm) | ID (mm) | Weight (kg/m) |
|---|---|---|---|---|---|
| 3 inch | 80 | 88.9 | 3.05 | 82.8 | 6.46 |
What Does Schedule 10S Mean?
Schedule 10S is a stainless steel pipe schedule covered by ASME B36.19. For the same nominal pipe size, the outside diameter remains fixed while the wall thickness changes with the schedule. The āSā designation is commonly used for stainless steel pipe schedules.
Typical Uses of 3 Inch Schedule 10S Pipe
NPS 3 Schedule 10S pipe is commonly used in stainless steel piping systems for industrial plants, utility services, food and beverage facilities, water-related systems, and fabrication work where corrosion resistance and dimensional accuracy are important.
Why Pipe Weight Matters
Pipe weight per meter is useful for transport planning, lifting studies, support design, structural loading, fabrication estimates, and installation planning. In stainless steel piping systems, accurate weight data helps improve material handling, support spacing, and total project cost estimation.
3 Inch Schedule 10S Pipe Calculation Notes
The listed weight is based on standard stainless steel pipe dimensions using the outside diameter and wall thickness of the pipe. Actual product weight may vary slightly depending on manufacturing tolerance, material grade, and supplier standard.
Frequently Asked Questions
What is the outside diameter of 3 inch Schedule 10S pipe?
The outside diameter is 88.9 mm.
What is the wall thickness of DN80 Schedule 10S pipe?
The wall thickness is 3.05 mm.
What is the inside diameter of NPS 3 Schedule 10S pipe?
The inside diameter is 82.8 mm.
How much does 3 inch Schedule 10S pipe weigh?
The approximate weight is 6.46 kg/m.
Which standard covers this pipe size?
This dimension data is based on ASME B36.19 for stainless steel pipe.
Conclusion
Schedule 10S pipe 3 inch (DN80) has an outside diameter of 88.9 mm, wall thickness of 3.05 mm, inside diameter of 82.8 mm, and a weight of 6.46 kg/m. It is a useful reference for piping design, drafting, estimating, and stainless steel fabrication work.
How to Read This 3 Inch Schedule 10S Reference
NPS 3 and DN80 identify the nominal pipe size; they are naming conventions rather than a direct statement of the pipe’s measured internal diameter. The outside diameter is the principal dimensional reference for many layout, fitting, and flange coordination tasks, while the wall thickness is used to understand the resulting bore and pipe mass.
The schedule describes a wall-thickness designation for the nominal size. It should not be treated as a substitute for the material specification, product certification, design code, or project piping class. Schedule selection alone does not establish the pipe grade, allowable pressure, corrosion performance, or suitability for a particular service.
Design and Drafting Checks
- Use the listed outside diameter when coordinating pipe with fittings, flanges, supports, clamps, and equipment connections.
- Use the listed inside diameter when reviewing bore-dependent details such as clearances, flow calculations, or internal access requirements.
- Use the listed weight per meter for preliminary material takeoffs, handling studies, support-load checks, and transport planning.
- Interpret the water-filled value as a reference load for the pipe containing water; the actual operating load depends on the conveyed fluid and project conditions.
- Confirm the applicable material grade, manufacturing requirements, tolerances, and project specifications before procurement or final design approval.
Using the Data in CAD and Project Documents
When preparing a model or fabrication drawing, keep the nominal designation, dimensional values, material description, and applicable standard clearly associated. The downloadable DWG can support drafting workflows, but the project team should verify interfaces and revisions against approved design documents before issuing fabrication or construction information.
Additional Questions About 3 Inch Schedule 10S Pipe
Are NPS 3 and DN80 the same naming convention?
They are corresponding nominal size designations used in U.S. customary and metric-oriented piping terminology. Neither designation should be read as the exact measured inside diameter.
Does Schedule 10S identify the stainless steel grade?
No. The schedule identifies the pipe wall-thickness designation for the nominal size. The stainless steel grade and other material requirements must be confirmed from the project specification, purchase documents, and product certification.
Can the listed pipe weight be used as the final support load?
It is useful for preliminary checks and estimating, but final support design should also account for contents, insulation, valves, fittings, testing conditions, support arrangement, and applicable engineering requirements.
Why should the inside diameter be checked separately from the nominal size?
The nominal size is a designation, while the inside diameter is a dimensional result affected by the outside diameter and wall thickness. The listed inside diameter is therefore the more useful reference for bore-related calculations and clearances.
What should be checked before ordering this pipe?
Confirm the required nominal size, schedule, material grade, applicable standard, product form, end condition, quantity, and any project-specific testing or documentation requirements.