This reference page provides the dimensional and weight data needed to identify Schedule 80S Pipe 14 Inch (DN350) during piping design, procurement, drafting, and fabrication review. Use the table for the authoritative local values, then confirm material, pressure, temperature, corrosion, and project requirements before specification.
Schedule 80S Pipe 14 Inch (DN350) 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 355.6 mm, an inside diameter of 330.2 mm, a wall thickness of 12.7 mm, and a pipe weight of 107.4 kg/m.
14 Inch Schedule 80S Pipe Dimensions
The following values are listed for NPS 14 Schedule 80S pipe, which corresponds to DN350 in metric designation.
- Pipe Size: NPS 14 Inch
- DN Size: DN350
- Outside Diameter (OD): 355.6 mm
- Inside Diameter (ID): 330.2 mm
- Wall Thickness: 12.7 mm
- Pipe Weight: 107.4 kg/m
- Pipe Weight Including Water: 192.99 kg/m
- Reference Standard: ANSI/ASME B36.19
Schedule 80S Pipe 14 Inch (DN350) Data Table
| Pipe Schedule | NPS | DN | OD (mm) | ID (mm) | Wall Thickness (mm) | Weight (kg/m) |
|---|---|---|---|---|---|---|
| 80S | 14 Inch | 350 | 355.6 | 330.2 | 12.7 | 107.4 |
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 14 Inch Schedule 80S Pipe
14 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 14 and DN350 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 14 and DN350, which is the standard naming format widely used in piping drawings, isometrics, and procurement specifications.
Conclusion
Schedule 80S Pipe 14 Inch (DN350) is listed on the current page with 355.6 mm OD, 330.2 mm ID, 12.7 mm wall thickness, and 107.4 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
The listed dimensions support several common engineering checks. The outside diameter is used when coordinating pipe with clamps, supports, sleeves, openings, and fitting connections. The inside diameter helps with flow-area review and hydraulic calculations. The wall thickness is important for fabrication details, welding preparation, corrosion allowances, and comparison with the specified pipe schedule.
The listed pipe weight can be used in material takeoffs, handling plans, support-load reviews, and shipping estimates. The separate water-inclusive value is relevant when considering the operating load of a filled line. Actual design checks should also account for insulation, valves, fittings, contents, supports, seismic effects, and other project-specific loads when applicable.
Schedule, Size, and Material Are Different Design Inputs
NPS 14 and DN350 identify the nominal pipe size, while 80S identifies the stainless steel wall-thickness series shown on this page. These labels should not be treated as a complete material or design specification. A purchase description may also need the project material grade, manufacturing requirements, end preparation, inspection requirements, and applicable piping code.
When reviewing a drawing or bill of materials, compare the schedule designation with the connected stainless steel fittings, flanges, valves, gaskets, and branch components. Matching nominal size alone does not confirm that every component has compatible dimensions, pressure ratings, materials, or joining details.
Drafting and Procurement Checks
- Use the OD when checking layout clearances, supports, sleeves, and connection interfaces.
- Use the ID and wall thickness when reviewing flow assumptions and fabrication details.
- Use the pipe weight for preliminary handling, support, and material-takeoff work.
- Confirm whether the design requires stainless steel pipe under the referenced dimensional standard.
- Review the connected fittings and flanges rather than relying on the pipe designation alone.
- Use the downloadable DWG reference as a drafting aid, then verify the drawing against the project specification and approved design documents.
Related Reference Topics
Readers comparing this entry with other piping components may also benefit from the site’s references for pipe schedules, NPS and DN conversion terminology, stainless steel pipe dimensions, pipe weight calculations, flange dimensions, and pipe fittings. These related topics help connect dimensional data with layout, procurement, and fabrication decisions without replacing project-specific engineering review.
Frequently Asked Questions
What does Schedule 80S mean for this pipe?
Schedule 80S is the stainless steel wall-thickness series identified for this pipe size under the referenced ASME B36.19 dimensional system. It helps users coordinate the pipe with compatible fittings, flanges, supports, and fabrication details.
Are NPS 14 and DN350 the same designation?
They are the inch-based and metric nominal designations shown for the same pipe size on this page. They are naming conventions, not a statement that the nominal designation equals the measured inside or outside diameter.
How is the pipe weight used?
The listed pipe weight supports preliminary material takeoffs, transport planning, lifting reviews, and pipe-support load estimates. A complete operating-load review may also need the contents, insulation, valves, fittings, and other attached components.
Can the DWG file be used directly for final design?
The DWG file is a useful drafting reference for the listed pipe entry. Before issuing drawings or purchasing material, verify the file against the project specification, connected components, approved design documents, and the applicable engineering requirements.