This reference page provides the dimensional data and practical context needed to review Schedule 5S Pipe 14 Inch (DN350). Use the table for the controlling local values, then use the explanatory notes to understand how nominal size, outside diameter, inside diameter, wall thickness, and pipe weight affect piping layout and documentation.
For design and drafting work, compare this information with the applicable fitting, flange, valve, support, and piping-component references used elsewhere in the project. The downloadable DWG can also support preliminary CAD coordination, but connection details and fabrication requirements should be checked against the project specifications and approved drawings.
Schedule 5S Pipe 14 Inch (DN350 mm) is a stainless steel pipe size commonly used in industrial piping systems where corrosion resistance and lighter wall thickness are required. This pipe size is typically referenced under ANSI/ASME B36.19, which is the standard used for stainless steel pipe dimensions.
For this size, the pipe has an outside diameter (OD) of 355.6 mm, an inside diameter (ID) of 347.68 mm, and a wall thickness of 3.96 mm. The listed pipe weight is 34.34 kg/m, while the weight including water is 129.23 kg/m.
Schedule 5S Pipe 14 Inch (DN350 mm) Dimension Table
| Pipe Size | NPS | DN | Outside Diameter (OD) | Inside Diameter (ID) | Wall Thickness | Weight |
|---|---|---|---|---|---|---|
| Schedule 5S Pipe | 14 Inch | DN350 | 355.6 mm | 347.68 mm | 3.96 mm | 34.34 kg/m |
What Is Schedule 5S Pipe?
Schedule 5S is a thin-wall stainless steel pipe schedule listed in ASME B36.19. The “S” designation is commonly used for stainless steel pipe schedules. Compared with heavier schedules, Schedule 5S provides a lighter wall thickness and lower pipe weight, which can help reduce handling effort, support load, and fabrication requirements in suitable applications.
However, pipe schedule selection should always be reviewed against design pressure, temperature, corrosion allowance, project code, and service conditions before final use.
14 Inch Schedule 5S Pipe Data
- Standard: ANSI/ASME B36.19
- Pipe Type: Stainless Steel Pipe
- NPS: 14 Inch
- DN: DN350
- OD: 355.6 mm
- ID: 347.68 mm
- Wall Thickness: 3.96 mm
- Pipe Weight: 34.34 kg/m
- Weight Including Water: 129.23 kg/m
Common Uses of 14 Inch Schedule 5S Pipe
14 inch Schedule 5S stainless steel pipe may be used in applications where corrosion resistance, lighter wall thickness, and good flow capacity are needed. Typical uses may include:
- Water treatment and utility piping systems
- Industrial stainless steel process lines
- Low-pressure transfer piping
- Food and beverage production systems
- Chemical and general fabrication projects
Why DN350 Pipe Dimensions Matter
Many users search for DN350 pipe dimensions to verify piping layout, support spacing, fabrication requirements, transport limits, and compatibility with fittings or connected equipment. For this pipe size, accurate dimensions are important for spool coordination, structural checks, and installation planning.
Knowing the correct 14 inch Schedule 5S pipe dimensions also helps engineers, designers, estimators, buyers, and students compare this size with other schedules when reviewing wall thickness, internal flow area, and total pipe weight.
NPS 14 and DN350 Explained
NPS stands for Nominal Pipe Size in inches, while DN stands for Diameter Nominal in metric designation. For this pipe size:
- NPS 14 = inch-based nominal pipe size
- DN350 = metric nominal designation
Although DN is shown in metric form, the actual outside diameter should always be checked from the dimensional standard. For this size, the OD is 355.6 mm.
Reference for Schedule 5S Pipe 14 Inch
This page provides a quick dimensional reference for engineers, piping designers, students, fabricators, and procurement teams looking for Schedule 5S Pipe 14 Inch (DN350 mm) data in a clear format.
Reference Standard: ANSI/ASME B36.19 stainless steel pipe dimensions.
How to Read This Schedule 5S Pipe Reference
The dimensional table is the quickest way to confirm the pipe size and its principal geometry. NPS identifies the inch-based nominal size, while DN provides the metric nominal designation. Neither designation should be treated as the measured outside or inside diameter; those dimensions must be taken from the listed dimensional data.
Outside diameter is especially important when coordinating clamps, supports, insulation space, branch connections, and equipment nozzles. Inside diameter is relevant to flow-area checks and internal clearance. Wall thickness helps distinguish this schedule from alternative stainless steel schedules, but it is not, by itself, a complete pressure-design basis.
Using the Weight Information
The listed pipe weight represents the pipe itself. The separate water-filled weight is useful for preliminary support-load awareness and installation planning when the line may contain water. Actual project loads can also include fittings, flanges, valves, insulation, lining, contents other than water, temporary supports, and other attached items, so a final support or structural assessment requires the complete line model and applicable design criteria.
Checks Before Selecting or Ordering Pipe
- Confirm that the stainless steel material specification and corrosion requirements match the service.
- Check design pressure, temperature, corrosion allowance, cyclic service, and applicable piping code before approving the wall thickness.
- Coordinate the pipe outside diameter with fittings, flanges, valves, branches, and connected equipment.
- Use the project’s approved material requisition and dimensional standard when preparing procurement documents.
- Review the DWG as a drafting aid and verify units, layer conventions, tolerances, and connection details before fabrication.
Related Piping References to Review
This page is most useful when read alongside related pipe schedule, stainless steel pipe dimensions, pipe fittings, flange dimensions, piping supports, and DWG reference pages. These supporting references help users move from a straight-pipe dimensional check to a coordinated piping layout, material takeoff, or fabrication package.
Frequently Asked Questions
What does Schedule 5S mean?
Schedule 5S identifies a stainless steel pipe schedule associated with a lighter wall category than heavier schedules. The schedule designation should be evaluated with the service conditions and governing design requirements rather than used as a standalone selection rule.
Are NPS 14 and DN350 the same designation?
They are the inch-based and metric nominal designations used to identify this pipe size. The actual outside diameter should still be checked in the dimensional data because nominal designations do not replace measured dimensions.
Why are both pipe weight and weight including water shown?
Pipe weight describes the empty pipe. Weight including water provides a separate reference for a water-filled condition and can help with preliminary support and handling discussions. It should not be treated as the complete operating load for every service.
Can this page be used for pressure design?
It is a dimensional reference, not a complete pressure-design calculation. Pressure and temperature ratings, material properties, corrosion allowance, fabrication rules, examination requirements, and the applicable piping code must be reviewed by the responsible engineering team.
What is the DWG file used for?
The DWG is intended to assist preliminary drafting and CAD coordination. Confirm units, geometry, tolerances, connection details, and project drawing requirements before using it for fabrication or construction.