Schedule STD Pipe 1/4 Inch (DN8) is a steel pipe size commonly used in small industrial and utility piping systems where standard dimensions, structural reliability, and dependable flow capacity are important. Based on the current page data under ANSI/ASME B36.10, this pipe size has an outside diameter of 13.7 mm, an inside diameter of 9.22 mm, a wall thickness of 2.24 mm, and a pipe weight of 0.63 kg/m.
1/4 Inch Schedule STD Pipe Dimensions
The following values are listed for NPS 1/4 Schedule STD 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): 9.22 mm
- Wall Thickness: 2.24 mm
- Pipe Weight: 0.63 kg/m
- Pipe Weight Including Water: 0.69 kg/m
- Reference Standard: ANSI/ASME B36.10
Schedule STD Pipe 1/4 Inch (DN8) Data Table
| Pipe Schedule | NPS | DN | OD (mm) | ID (mm) | Wall Thickness (mm) | Weight (kg/m) |
|---|---|---|---|---|---|---|
| STD | 1/4 Inch | 8 | 13.7 | 9.22 | 2.24 | 0.63 |
What Is Schedule STD Pipe?
Schedule STD means Standard Weight in the IPS pipe system and is commonly referenced for carbon steel and steel pipe dimensions under ASME B36.10. In practical piping work, Schedule STD is used as a standard wall thickness designation for many nominal pipe sizes. It helps engineers, fabricators, and buyers confirm dimensional compatibility, estimate weight, and coordinate with fittings, flanges, supports, and structural loads.
Common Uses of 1/4 Inch Schedule STD Pipe
1/4 inch Schedule STD pipe is commonly used in industrial and utility piping systems where standard steel pipe dimensions are required for small-bore service. This size is often selected for water, utility, sample, and auxiliary lines where reliable dimensional data is important for design, fabrication, and maintenance.
- Instrument and small-bore piping in industrial systems
- Utility service lines for water, air, and general plant service
- Sample and auxiliary piping in process facilities
- Compact skid and package unit piping where small steel pipe is required
- Maintenance and replacement work using standard pipe dimensions
- Workshop and fabrication projects needing standard steel pipe data
- Low-volume distribution lines in utility systems
- General steel piping applications where DN8 pipe is specified
In practical engineering work, this pipe size may be reviewed when checking flow capacity, support spacing, transport weight, and installation planning. Final pipe selection should always be verified against project pressure, temperature, fluid type, corrosion allowance, 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, transport planning, welding preparation, and installation work. For a pipe size such as 1/4 inch DN8, accurate weight data is useful for fabrication planning and small-bore piping layout. Inside diameter is also important for 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, specifications, and procurement documents.
Conclusion
Schedule STD Pipe 1/4 Inch (DN8) is listed on the current page with 13.7 mm OD, 9.22 mm ID, 2.24 mm wall thickness, and 0.63 kg/m weight. It is a useful steel pipe reference for engineers, designers, and buyers who need standard dimensional and weight data for small piping systems and project coordination.