This reference provides the dimensional and weight data needed to review Schedule 80S Pipe 16 Inch (DN400) in piping layouts, material take-offs, procurement documents, and fabrication planning. Use the table below as the page’s local reference data, then confirm the project material specification, service conditions, joining method, and applicable design requirements before final selection.
The page also explains how NPS, DN, outside diameter, inside diameter, wall thickness, and pipe weight relate to practical piping work. For drafting workflows, the downloadable DWG can support layout coordination, subject to project-specific checking before issue.
Schedule 80S Pipe 16 Inch (DN400) 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 406.4 mm, an inside diameter of 381 mm, a wall thickness of 12.7 mm, and a pipe weight of 123.31 kg/m.
16 Inch Schedule 80S Pipe Dimensions
The following values are listed for NPS 16 Schedule 80S pipe, which corresponds to DN400 in metric designation.
- Pipe Size: NPS 16 Inch
- DN Size: DN400
- Outside Diameter (OD): 406.4 mm
- Inside Diameter (ID): 381 mm
- Wall Thickness: 12.7 mm
- Pipe Weight: 123.31 kg/m
- Pipe Weight Including Water: 237.26 kg/m
- Reference Standard: ANSI/ASME B36.19
Schedule 80S Pipe 16 Inch (DN400) Data Table
| Pipe Schedule | NPS | DN | OD (mm) | ID (mm) | Wall Thickness (mm) | Weight (kg/m) |
|---|---|---|---|---|---|---|
| 80S | 16 Inch | 400 | 406.4 | 381 | 12.7 | 123.31 |
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 16 Inch Schedule 80S Pipe
16 inch Schedule 80S pipe is commonly used in stainless steel piping systems that require good corrosion resistance, dependable wall thickness, and substantial 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 to large flow 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 larger piping 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 16 and DN400 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 16 and DN400, which is the standard naming format widely used in piping drawings, isometrics, and procurement specifications.
Conclusion
Schedule 80S Pipe 16 Inch (DN400) is listed on the current page with 406.4 mm OD, 381 mm ID, 12.7 mm wall thickness, and 123.31 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 Use This Pipe Reference
Start with the dimensional table when checking whether a pipe section can coordinate with a piping layout, fitting arrangement, flange connection, or support concept. The outside diameter is relevant to clearances, clamps, guides, insulation space, and connection geometry. The inside diameter is used when reviewing flow area and internal access. Wall thickness and pipe weight support fabrication, handling, support-load, and material-estimating discussions.
These dimensions should not be treated as a complete design approval. Final engineering review should also address the selected stainless steel material, corrosion environment, pressure and temperature conditions, joining details, allowable loads, inspection requirements, and compatibility with connected components.
Related Piping References to Review
For a complete piping review, this page can be used alongside references for stainless steel pipe dimensions, pipe schedules, butt-weld fittings, pipe flanges, and pipe support design. These related topics help connect the straight-pipe dimensions to the fittings, connections, supports, and drafting conventions used in a real piping system.
Drafting and Procurement Checks
- Confirm that the drawing uses the same NPS and DN designation as the purchase or material list.
- Check that connected fittings, flanges, valves, and supports are specified for the same dimensional system.
- Use the stated weight consistently when preparing handling or preliminary support-load estimates.
- Review the DWG against the project layer, dimensioning, naming, and revision requirements before issuing it.
- Verify material grade and project specifications separately; the schedule designation alone does not identify every material or service requirement.
Frequently Asked Questions
What does Schedule 80S identify?
Schedule 80S identifies a stainless steel pipe wall-thickness series associated with the nominal pipe size. It helps coordinate dimensions, fittings, fabrication, procurement, and weight estimates, but it does not by itself define the complete material specification or design suitability.
Are NPS 16 and DN400 the same designation?
On this page, NPS 16 and DN400 identify the same nominal pipe size using inch-based and metric-based naming conventions. Nominal designations should still be checked against the dimensional data when coordinating components.
Why is the outside diameter important?
Outside diameter affects physical fit, clearances, support hardware, connection geometry, and layout coordination. It is especially useful when checking space around the pipe rather than the available internal flow area.
Why should pipe weight be checked separately from dimensions?
Weight affects material take-offs, transportation, lifting, installation planning, and preliminary support-load reviews. The page’s listed weight should be used with the project assumptions and should not replace a complete load calculation.
Does the DWG replace engineering review?
No. A DWG is a drafting resource for coordination and design development. It should be checked against the project specification, connected components, fabrication requirements, and the latest approved design documents before use in construction.
Schedule 80S Pipe 16 Inch (DN400) FAQ
What is the reference standard shown on this page?
The source data identifies ANSI/ASME B36.19 as the reference standard for the listed pipe dimensions.
Can this page be used to select a pipe for any service?
No. The dimensional reference supports comparison and coordination, but service selection requires review of material grade, fluid, corrosion conditions, pressure, temperature, fabrication, and project design requirements.
Where can this pipe size be used in project documentation?
The designation can appear in piping specifications, isometric drawings, bills of material, procurement documents, fitting coordination, and CAD or DWG workflows.