This reference page explains the dimensional data for Schedule 5S Pipe 1/4 Inch (DN8), including outside diameter, inside diameter, wall thickness, and listed weight. Use it when checking small-bore stainless steel piping layouts, fabrication details, procurement information, or CAD coordination.
The existing table is the primary dimensional reference on this page. The notes below explain how to read the data and how to connect it with related resources such as pipe schedules, stainless steel pipe standards, fittings, flanges, and DWG details.
Schedule 5S Pipe 1/4 Inch (DN8 mm) is a stainless steel pipe size commonly used in small-bore 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 13.7 mm, an inside diameter (ID) of 12.5 mm, and a wall thickness of 1.2 mm. The listed pipe weight is 0 kg/m, while the weight including water is 0.14 kg/m.
Schedule 5S Pipe 1/4 Inch (DN8 mm) Dimension Table
| Pipe Size | NPS | DN | Outside Diameter (OD) | Inside Diameter (ID) | Wall Thickness | Weight |
|---|---|---|---|---|---|---|
| Schedule 5S Pipe | 1/4 Inch | DN8 | 13.7 mm | 12.5 mm | 1.2 mm | 0 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 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.
1/4 Inch Schedule 5S Pipe Data
- Standard: ANSI/ASME B36.19
- Pipe Type: Stainless Steel Pipe
- NPS: 1/4 Inch
- DN: DN8
- OD: 13.7 mm
- ID: 12.5 mm
- Wall Thickness: 1.2 mm
- Pipe Weight: 0 kg/m
- Weight Including Water: 0.14 kg/m
Common Uses of 1/4 Inch Schedule 5S Pipe
1/4 inch Schedule 5S stainless steel pipe may be used in applications where corrosion resistance, lighter wall thickness, and compact pipe size are needed. Typical uses may include:
- Small utility piping systems
- Instrumentation and light-duty process lines
- Low-pressure stainless steel transfer piping
- Food and beverage service connections
- Chemical and general fabrication work
Why DN8 Pipe Dimensions Matter
Many users search for DN8 pipe dimensions to verify piping layout, support spacing, fabrication requirements, and compatibility with fittings or connected equipment. For this pipe size, accurate dimensions are important for spool coordination, line routing, and installation planning.
Knowing the correct 1/4 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 1/4 and DN8 Explained
NPS stands for Nominal Pipe Size in inches, while DN stands for Diameter Nominal in metric designation. For this pipe size:
- NPS 1/4 = inch-based nominal pipe size
- DN8 = 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 13.7 mm.
Reference for Schedule 5S Pipe 1/4 Inch
This page provides a quick dimensional reference for engineers, piping designers, students, fabricators, and procurement teams looking for Schedule 5S Pipe 1/4 Inch (DN8 mm) data in a clear format.
Reference Standard: ANSI/ASME B36.19 stainless steel pipe dimensions.
How to Read the Schedule 5S Pipe Data
The outside diameter (OD) is the external pipe dimension used when coordinating clearances, clamps, supports, sleeves, and connections. The inside diameter (ID) describes the available internal passage and can be useful when reviewing flow paths or matching connected components.
Wall thickness is the difference between the outside and inside pipe surfaces. It is important for fabrication review, dimensional checks, threaded or welded connection planning, and comparison with other stainless steel schedules. Schedule 5S identifies a dimensional pipe series; it should not be treated as a standalone approval for a particular pressure, temperature, or process service.
Using This Reference in Design and Drafting
- Use the OD when coordinating pipe routing with supports, penetrations, equipment nozzles, and nearby components.
- Use the ID when reviewing internal clearance and the relationship between the pipe and connected fittings or instruments.
- Use the wall thickness when checking fabrication details and comparing this schedule with heavier or lighter pipe options.
- Use the listed weight and weight including water when preparing preliminary handling or support-load information, subject to project-specific verification.
- Check the applicable project specification, material requirements, design conditions, and connection details before selecting the pipe for construction.
Related Pipe Reference Topics
Readers comparing this size may also benefit from related references for pipe schedules, NPS and DN designations, stainless steel pipe dimensions, butt-weld fittings, socket-weld fittings, flanges, and pipe support terminology. The downloadable DWG resource can also support drafting and layout coordination, but the dimensional table should remain the controlling reference for the values shown here.
Frequently Asked Questions
What is the outside diameter of 1/4 inch Schedule 5S pipe?
The listed outside diameter is 13.7 mm.
What are the ID and wall thickness?
The listed inside diameter is 12.5 mm, and the listed wall thickness is 1.2 mm.
Is NPS 1/4 the same designation as DN8?
On this reference page, NPS 1/4 is paired with the metric nominal designation DN8. Nominal designations are not a substitute for checking the actual dimensional values in the table.
What does the 5S designation mean?
The source content identifies Schedule 5S as a stainless steel pipe schedule associated with ANSI/ASME B36.19. It describes a lighter-wall dimensional series, but final selection still requires review of the design and service conditions.
What is the listed pipe weight?
The listed pipe weight is 0 kg/m, and the listed weight including water is 0.14 kg/m. Use the values as presented in the local reference table and confirm project-specific calculation requirements before relying on them for design or support engineering.
Can this pipe be used for any low-pressure service?
Not automatically. Application suitability depends on pressure, temperature, corrosion allowance, material requirements, connection method, governing code, and the service conditions identified by the project engineer.