Use this Schedule 160 pipe 1/2 inch reference when checking a small-bore steel pipe selection for drawings, takeoffs, fabrication documents, or preliminary engineering estimates. The page brings the NPS and DN designations together with the published outside diameter, wall thickness, inside diameter, and weight data.
For practical drafting work, compare the dimensional data with the connected pipe fittings, flanges, and pipe schedule references used in the same piping system. Keeping nominal size, schedule, and actual dimensional values clearly identified helps prevent errors when converting between drawings, specifications, and material lists.
Schedule 160 pipe 1/2 inch (DN15) is an extra heavy-wall steel pipe size commonly used in piping design, fabrication, drafting, and engineering estimation work. This page provides the standard dimensions, wall thickness, inside diameter, and weight per meter for NPS 1/2 Schedule 160 pipe based on ASME B36.10.
1/2 Inch Schedule 160 Pipe Dimensions
- Nominal Pipe Size (NPS): 1/2 inch
- Diameter Nominal (DN): DN15
- Outside Diameter (OD): 21.3 mm
- Wall Thickness: 4.78 mm
- Inside Diameter (ID): 11.74 mm
- Pipe Weight: 1.95 kg/m
- Pipe Weight Filled With Water: 2.05 kg/m
- Reference Standard: ASME B36.10
- Pipe Type: Steel Pipe
Schedule 160 Pipe 1/2 Inch Data Table
| Pipe Size | DN | OD (mm) | Wall Thickness (mm) | ID (mm) | Weight (kg/m) |
|---|---|---|---|---|---|
| 1/2 inch | 15 | 21.3 | 4.78 | 11.74 | 1.95 |
What Does Schedule 160 Mean?
Schedule 160 refers to an extra heavy wall thickness series used for steel pipe under ASME B36.10. For the same nominal pipe size, the outside diameter remains fixed while the wall thickness increases according to the schedule. A much thicker wall reduces the inside diameter and significantly increases pipe weight.
Typical Uses of 1/2 Inch Schedule 160 Pipe
NPS 1/2 Schedule 160 pipe is commonly referenced for very heavy-duty industrial piping systems where extremely high wall thickness is required. It may be used in process piping, utility lines, compact piping layouts, fabrication work, and engineering applications where pipe strength and wall thickness are more critical than maximum flow area.
Why Pipe Weight Matters
Pipe weight per meter is essential for transport planning, lifting studies, support design, structural loading, fabrication estimates, and installation planning. For a 1/2 inch Schedule 160 pipe, the extra heavy wall thickness results in much higher installed weight than lighter schedules, so accurate weight data is important for engineering and construction work.
1/2 Inch Schedule 160 Pipe Calculation Notes
The listed weight is based on standard steel pipe dimensions using the outside diameter and wall thickness of the pipe. Actual product weight may vary slightly depending on manufacturing tolerance, material specification, and supplier standard.
Frequently Asked Questions
What is the outside diameter of 1/2 inch Schedule 160 pipe?
The outside diameter is 21.3 mm.
What is the wall thickness of DN15 Schedule 160 pipe?
The wall thickness is 4.78 mm.
What is the inside diameter of NPS 1/2 Schedule 160 pipe?
The inside diameter is 11.74 mm.
How much does 1/2 inch Schedule 160 pipe weigh?
The approximate weight is 1.95 kg/m.
Which standard covers this pipe size?
This dimension data is based on ASME B36.10 for steel pipe.
Conclusion
Schedule 160 pipe 1/2 inch (DN15) has an outside diameter of 21.3 mm, wall thickness of 4.78 mm, inside diameter of 11.74 mm, and a weight of 1.95 kg/m. It is a useful reference for piping design, fabrication, estimating, and heavy-duty industrial engineering work.
How to Use This Pipe Reference
The nominal size identifies the pipe designation used in piping documents; it is not the same as the measured inside diameter. For fabrication and layout checks, use the listed outside diameter and wall thickness as the dimensional reference, then use the listed inside diameter where the open passage is relevant.
The schedule describes the wall-thickness series for the steel pipe. It should not be used by itself as a complete pressure or service-selection basis. Final selection also requires the applicable material specification, design conditions, joining method, corrosion or erosion considerations, and project requirements.
Drafting and Estimating Checks
- Show the nominal size and schedule consistently in drawings, bills of material, and procurement notes.
- Use the outside diameter when checking clearances, clamps, sleeves, and connection geometry.
- Use the inside diameter when reviewing passage, instrument connections, or flow-related layouts.
- Use the listed pipe weight for preliminary material and support discussions, while confirming the supplier’s certified product data for procurement.
- Check adjoining components against the applicable pipe dimensions and piping terminology references before releasing a drawing.
Related PipeSTD References
For broader comparison work, see the site’s pipe schedule guides, steel pipe dimension references, and CAD and DWG resources. These related references can help connect tabulated pipe data with drafting and fabrication workflows without replacing the project specification or engineering review.
Additional Questions About Schedule 160 Pipe
Is the nominal size the same as the inside diameter?
No. The nominal size is a designation used for piping identification. The inside diameter is a separate dimensional value affected by the pipe’s outside diameter and wall thickness.
Can the listed dimensions be used for a piping drawing?
They can support preliminary layout and drafting checks. Before fabrication or procurement, verify the dimensions against the governing project specification, component standard, and supplier documentation.
Does Schedule 160 alone determine allowable pressure?
No. A schedule identifies a wall-thickness series, but allowable pressure and service suitability depend on the complete design basis, including material, temperature, joining details, and other project requirements.
Why should pipe weight be checked during layout?
Pipe weight affects handling, supports, lifting plans, transport, and preliminary structural loading discussions. The actual installed condition may also include fittings, valves, contents, insulation, and other attached items.