This reference page gives a focused dimensional overview of Schedule 5S Pipe 20 Inch (DN500 mm) for piping designers, engineers, fabricators, estimators, and procurement teams. Use the table and data list to check the stated outside diameter, inside diameter, wall thickness, and pipe weight before coordinating layouts, fittings, supports, or fabrication documents.
The explanatory notes below the reference data clarify how nominal size, schedule, dimensional checks, and water-filled weight relate to practical piping work. For related design research, this page can also connect naturally to references on stainless steel pipe dimensions, pipe schedules, NPS and DN designations, flange dimensions, and pipe support loads.
Schedule 5S Pipe 20 Inch (DN500 mm) is a stainless steel pipe size commonly used in large piping systems where corrosion resistance and lighter wall thickness are important. This pipe size is typically referenced under ANSI/ASME B36.19, the standard used for stainless steel pipe dimensions.
For this size, the pipe has an outside diameter (OD) of 508 mm, an inside diameter (ID) of 498.44 mm, and a wall thickness of 4.78 mm. The listed pipe weight is 59.32 kg/m, while the weight including water is 254.34 kg/m.
Schedule 5S Pipe 20 Inch (DN500 mm) Dimension Table
| Pipe Size | NPS | DN | Outside Diameter (OD) | Inside Diameter (ID) | Wall Thickness | Weight |
|---|---|---|---|---|---|---|
| Schedule 5S Pipe | 20 Inch | DN500 | 508 mm | 498.44 mm | 4.78 mm | 59.32 kg/m |
What Is Schedule 5S Pipe?
Schedule 5S is a thin-wall stainless steel pipe schedule listed in ASME B36.19. The āSā designation is generally used for stainless steel pipe schedules. Compared with heavier pipe schedules, Schedule 5S provides a lower wall thickness and lighter weight, which can help reduce fabrication load, support requirements, and handling effort in suitable applications.
However, pipe schedule selection should always be checked against design pressure, temperature, corrosion allowance, code requirements, and service conditions before use.
20 Inch Schedule 5S Pipe Data
- Standard: ANSI/ASME B36.19
- Pipe Type: Stainless Steel Pipe
- NPS: 20 Inch
- DN: DN500
- OD: 508 mm
- ID: 498.44 mm
- Wall Thickness: 4.78 mm
- Pipe Weight: 59.32 kg/m
- Weight Including Water: 254.34 kg/m
Common Uses of 20 Inch Schedule 5S Pipe
20 inch Schedule 5S stainless steel pipe may be used in systems where a large internal flow area and corrosion-resistant material are needed. Typical applications 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 DN500 Pipe Dimensions Matter
Many users search for DN500 pipe dimensions to verify piping layout, support design, transport limits, fabrication requirements, and compatibility with fittings or connected equipment. For large-diameter pipe, accurate dimensions are important for spool coordination, structural loading checks, and installation planning.
Knowing the correct 20 inch Schedule 5S pipe dimensions also helps engineers, designers, estimators, buyers, and students compare this pipe size with other schedules when reviewing wall thickness, internal flow area, and total pipe weight.
NPS 20 and DN500 Explained
NPS stands for Nominal Pipe Size in inches, while DN stands for Diameter Nominal in metric designation. For this pipe size:
- NPS 20 = inch-based nominal pipe size
- DN500 = 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 508 mm.
Reference for Schedule 5S Pipe 20 Inch
This page provides a quick dimensional reference for engineers, piping designers, students, fabricators, and procurement teams looking for Schedule 5S Pipe 20 Inch (DN500 mm) data in a clear format.
Reference Standard: ANSI/ASME B36.19 stainless steel pipe dimensions.
How to Use This Pipe Dimension Reference
Start with the dimensional table when checking whether a large-bore pipe will fit a layout, equipment connection, or fabrication detail. The outside diameter is particularly important for clearances, clamps, guides, supports, insulation space, and connection geometry. The inside diameter is useful when reviewing flow-area assumptions, lining or coating details, and transitions to connected components.
The listed wall thickness identifies the nominal pipe wall shown for this schedule. It should not be treated as a complete statement of allowable pressure, corrosion life, or structural capacity. Those decisions require review of the applicable design code, material specification, manufacturing requirements, temperature, pressure, corrosion allowance, joining method, and service conditions.
Understanding the Weight Entries
The pipe weight is a useful input for handling, shipping, spool fabrication, lifting plans, and support-load calculations. The separate weight including water represents a water-filled condition and can be relevant when considering hydrostatic testing, temporary loading, or operating scenarios. Confirm which load case is required for the project instead of using the water-filled value for every support or structural check.
Weight data should also be coordinated with the actual material specification, fittings, valves, flanges, insulation, attachments, and field conditions. A complete support review may need more than the straight-pipe value shown in the reference table.
NPS, DN, and Drawing Coordination
NPS 20 and DN500 are nominal designations, while the stated outside diameter is the dimensional value used for many layout and connection checks. Keeping these concepts separate helps prevent errors when metric and inch-based documents are used together.
For drafting work, compare the pipe dimensions with the selected fitting, flange, valve, and equipment connection data before finalizing a spool or general arrangement. The downloadable DWG associated with this page can support drafting workflows, but users should verify units, layer conventions, connection details, and project-specific requirements before incorporating it into issued drawings.
Design Checks Before Selection
- Confirm that the pipe schedule meets the project pressure and temperature design basis.
- Review corrosion allowance, material compatibility, fabrication rules, and applicable code requirements.
- Check clearances using the outside diameter and connected-component dimensions.
- Use the relevant pipe weight and fluid condition when reviewing supports, lifting, transport, and temporary loads.
- Verify that fittings, flanges, valves, gaskets, and equipment nozzles are compatible with the selected pipe dimensions.
For broader comparison work, useful related references include a pipe schedule comparison, a DN500 pipe dimension guide, stainless steel pipe fitting dimensions, and pipe support design terminology. These related pages can help users move from a single dimensional lookup to a coordinated piping design review.
Frequently Asked Questions
What does Schedule 5S mean for this pipe?
Schedule 5S identifies a thin-wall stainless steel pipe schedule referenced under ASME B36.19. It describes the dimensional schedule; it does not by itself establish suitability for every pressure, temperature, corrosion, or service condition.
Are NPS 20 and DN500 the same designation?
They are the inch-based and metric nominal designations presented for this pipe size. Because nominal designations are not the same as measured dimensions, confirm the actual outside diameter from the applicable dimensional reference.
Why are both pipe weight and weight including water listed?
The pipe-weight entry describes the listed pipe condition, while the water-filled entry provides a separate load reference for a filled line. The appropriate value depends on whether the review concerns handling, shipping, operation, testing, or support loading.
Can the listed dimensions be used for pressure design?
The dimensions can support preliminary coordination and reference work, but pressure design requires additional checks. Review the governing code, material, design pressure, temperature, corrosion allowance, manufacturing requirements, and service conditions before approving the selection.
What should be checked before using the DWG file?
Verify the drawing units, project drafting standards, connection details, fitting and flange compatibility, and the revision or approval status required by the project. A reference drawing should not replace project-specific dimensional verification.