This reference is intended for engineers, designers, fabricators, estimators, and CAD users working with large-diameter stainless steel piping. Use the dimensional data below when checking layouts, preparing drawings, reviewing material takeoffs, or coordinating pipe with fittings and flanges.
For related design work, compare this page with references for stainless steel pipe schedules, NPS and DN pipe size terminology, pipe flange dimensions, and pipe support design considerations. These topics help connect a dimensional lookup to the wider piping system.
Schedule 10S pipe 14 inch (DN350) is a large-diameter 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 14 Schedule 10S pipe based on ASME B36.19.
14 Inch Schedule 10S Pipe Dimensions
- Nominal Pipe Size (NPS): 14 inch
- Diameter Nominal (DN): DN350
- Outside Diameter (OD): 355.6 mm
- Wall Thickness: 4.78 mm
- Inside Diameter (ID): 346.04 mm
- Pipe Weight: 41.36 kg/m
- Pipe Weight Filled With Water: 135.35 kg/m
- Reference Standard: ASME B36.19
- Pipe Type: Stainless Steel Pipe
Schedule 10S Pipe 14 Inch Data Table
| Pipe Size | DN | OD (mm) | Wall Thickness (mm) | ID (mm) | Weight (kg/m) |
|---|---|---|---|---|---|
| 14 inch | 350 | 355.6 | 4.78 | 346.04 | 41.36 |
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 14 Inch Schedule 10S Pipe
NPS 14 Schedule 10S pipe is commonly referenced in stainless steel piping systems used in industrial plants, utility lines, water-related systems, food and process facilities, 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 large-diameter stainless steel piping systems, total line weight can significantly affect handling and support requirements.
14 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 14 inch Schedule 10S pipe?
The outside diameter is 355.6 mm.
What is the wall thickness of DN350 Schedule 10S pipe?
The wall thickness is 4.78 mm.
What is the inside diameter of NPS 14 Schedule 10S pipe?
The inside diameter is 346.04 mm.
How much does 14 inch Schedule 10S pipe weigh?
The approximate weight is 41.36 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 14 inch (DN350) has an outside diameter of 355.6 mm, wall thickness of 4.78 mm, inside diameter of 346.04 mm, and a weight of 41.36 kg/m. It is a useful reference for piping design, drafting, estimating, and stainless steel fabrication work.
How to Use This Pipe Dimension Reference
Nominal pipe size is a designation used to identify the pipe size; it is not a direct statement of the measured inside or outside diameter. For drawings and coordination, use the listed outside diameter when checking clearances, clamps, supports, fittings, and flange connections. Use the listed inside diameter when reviewing flow passages or lining up connected components.
Schedule, wall thickness, and design review
A schedule identifies a standardized wall-thickness designation for a nominal pipe size. It should not be treated by itself as a complete pressure-rating decision. Pressure, temperature, corrosion allowance, material grade, joining method, manufacturing tolerance, and the governing design code may all affect final selection. Confirm the project specification and have the responsible engineer verify the pipe for its intended service.
Using the weight data in project work
The mass-per-length value is useful for preliminary material estimates, transportation planning, lifting plans, support loads, and installation coordination. The water-filled value is a separate planning reference from the empty-pipe value. Actual procurement weight can differ because of product tolerances, grade, finish, and supplier practices, so purchase documentation should control when exact shipping or structural loads are required.
CAD and drafting considerations
When creating a model or fabrication drawing, keep nominal size, outside diameter, wall thickness, and inside diameter as separate properties. This avoids confusing the pipe designation with the geometry needed for clearances and connections. The downloadable DWG can support drafting workflows, but review units, layer conventions, connection details, and project-specific requirements before incorporating it into issued documentation.
Useful companion references include pipe fitting dimensions, stainless steel flange references, pipe support spacing guidance, and DWG pipe detail resources. Linking these subjects helps readers move from a single pipe lookup to coordinated piping design and drafting work.
Additional Questions About Using This Reference
Is nominal size the same as the measured pipe diameter?
No. Nominal size is a standardized identification, while the actual outside and inside diameters are the dimensional values used for layout, connection, and clearance checks.
Can this page alone determine whether the pipe is suitable for service?
No. Dimensional data is only one part of pipe selection. Service conditions, material requirements, design code rules, corrosion considerations, fabrication details, and project specifications must also be reviewed.
Should the listed weight be used as the final shipping weight?
Use it as a reference for estimating and planning. Confirm final shipping and handling data with the manufacturer or supplier because product tolerances and purchasing details can affect actual weight.
What should be checked before using the DWG file?
Check the drawing units, scale, layer organization, geometry, connection interfaces, and project drafting requirements. A CAD reference should be reviewed before it becomes part of an issued design or fabrication package.