Schedule 80S Pipe 1/4 Inch (DN8) is a stainless steel pipe size commonly used in small-bore 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 13.7 mm, an inside diameter of 7.66 mm, a wall thickness of 3.02 mm, and a pipe weight of 0.8 kg/m.
1/4 Inch Schedule 80S Pipe Dimensions
The following values are listed for NPS 1/4 Schedule 80S pipe, which corresponds to DN8 in metric designation.
- Pipe Size: NPS 1/4 Inch
- DN Size: DN8
- Outside Diameter (OD): 13.7 mm
- Inside Diameter (ID): 7.66 mm
- Wall Thickness: 3.02 mm
- Pipe Weight: 0.8 kg/m
- Pipe Weight Including Water: 0.84 kg/m
- Reference Standard: ANSI/ASME B36.19
Schedule 80S Pipe 1/4 Inch (DN8) Data Table
| Pipe Schedule | NPS | DN | OD (mm) | ID (mm) | Wall Thickness (mm) | Weight (kg/m) |
|---|---|---|---|---|---|---|
| 80S | 1/4 Inch | 8 | 13.7 | 7.66 | 3.02 | 0.8 |
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, valves, and support details.
Common Uses of 1/4 Inch Schedule 80S Pipe
1/4 inch Schedule 80S pipe is commonly used in stainless steel piping systems that require good corrosion resistance, dependable wall thickness, and reliable service performance. This size is often selected for very small process lines, utility piping, and installations where standard dimensions are needed for design, fabrication, procurement, and maintenance work.
- Instrument and small-bore piping systems in industrial service
- Utility and service piping for water, air, and general process lines
- Sample lines and auxiliary 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
- Panel and skid piping for compact process systems
- Pipeline modification 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 spacing, 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 support design, material take-off, welding preparation, transport planning, and installation work. Weight data is also useful for estimating handling loads, while inside diameter affects flow calculations and service capacity review.
NPS 1/4 and DN8 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 1/4 and DN8, which is the standard naming format widely used in piping drawings, isometrics, and procurement specifications.
Conclusion
Schedule 80S Pipe 1/4 Inch (DN8) is listed on the current page with 13.7 mm OD, 7.66 mm ID, 3.02 mm wall thickness, and 0.8 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.