This reference page is for engineers, designers, estimators, fabricators, and CAD users who need a quick dimensional check for Schedule 10 pipe 28 inch (DN700). It brings together the nominal size designation, outside diameter, wall thickness, inside diameter, and pipe weight in one location for piping documentation and preliminary planning.
Use the dimensional table as a reference alongside the project specification, material requirements, fabrication documents, and applicable design checks. The schedule identifies a wall-thickness series; it does not by itself establish allowable pressure, corrosion allowance, temperature limits, or suitability for a particular service.
Schedule 10 pipe 28 inch (DN700) is a large-diameter steel pipe size commonly used as a reference in piping design, fabrication, drafting, and estimation work. This page provides the standard dimensions, wall thickness, inside diameter, and weight per meter for NPS 28 Schedule 10 pipe based on ASME B36.10.
28 Inch Schedule 10 Pipe Dimensions
- Nominal Pipe Size (NPS): 28 inch
- Diameter Nominal (DN): DN700
- Outside Diameter (OD): 711 mm
- Wall Thickness: 7.92 mm
- Inside Diameter (ID): 695.16 mm
- Pipe Weight: 137.32 kg/m
- Pipe Weight Filled With Water: 516.66 kg/m
- Reference Standard: ASME B36.10
Schedule 10 Pipe 28 Inch Data Table
| Pipe Size | DN | OD (mm) | Wall Thickness (mm) | ID (mm) | Weight (kg/m) |
|---|---|---|---|---|---|
| 28 inch | 700 | 711 | 7.92 | 695.16 | 137.32 |
What Does Schedule 10 Mean?
Schedule 10 refers to the wall thickness series of the pipe. For the same nominal pipe size, the outside diameter remains fixed while the wall thickness changes depending on the schedule. A thicker wall generally increases pipe weight and reduces the inside diameter.
Typical Uses of 28 Inch Schedule 10 Pipe
NPS 28 Schedule 10 pipe is commonly used where large flow capacity is needed with relatively lighter wall thickness than heavier schedules. It may be used in water transfer lines, utility systems, low-pressure process piping, drainage applications, and general plant layout or fabrication reference work.
Why Pipe Weight Matters
Pipe weight per meter is important for transport planning, support design, structural loading, fabrication estimates, and lifting calculations. In large-diameter piping systems, total line weight can significantly affect support spacing, installation methods, and project cost.
28 Inch Schedule 10 Pipe Calculation Notes
The listed weight is based on standard steel pipe dimension data using the outside diameter and wall thickness of the pipe. Actual product weight may vary slightly depending on manufacturing tolerance, material grade, and supplier standard.
Frequently Asked Questions
What is the outside diameter of 28 inch Schedule 10 pipe?
The outside diameter is 711 mm.
What is the wall thickness of DN700 Schedule 10 pipe?
The wall thickness is 7.92 mm.
What is the inside diameter of NPS 28 Schedule 10 pipe?
The inside diameter is 695.16 mm.
How much does 28 inch Schedule 10 pipe weigh?
The approximate weight is 137.32 kg/m.
Which standard covers this pipe size?
This dimension data is based on ASME B36.10 for welded and seamless wrought steel pipe.
Conclusion
Schedule 10 pipe 28 inch (DN700) has an outside diameter of 711 mm, wall thickness of 7.92 mm, inside diameter of 695.16 mm, and a weight of 137.32 kg/m. It is a useful reference for piping design, drafting, estimating, and fabrication work.
How to Read the 28 Inch Schedule 10 Pipe Data
NPS 28 and DN700 are nominal size designations used to identify the same large-diameter pipe size in different measurement conventions. The nominal designation should not be treated as the measured inside or outside diameter. For layout, connection, and clearance work, use the listed outside diameter and inside diameter rather than the nominal label alone.
The outside diameter is the controlling reference for many layout tasks, including pipe-rack spacing, opening coordination, insulation clearance, and fitting alignment. The inside diameter is useful when reviewing flow passages, lining or coating effects, and the relationship between nominal size and available bore. Actual supplied dimensions can be affected by manufacturing tolerances and product requirements, so procurement and fabrication work should verify the applicable documentation.
Schedule 10, Weight, and Design Review
Schedule 10 describes the wall-thickness series for this nominal pipe size. Comparing schedules for the same nominal size generally involves reviewing the wall thickness, inside diameter, and weight together. A heavier wall can change the available bore and increase handling or support loads, while a lighter wall may require closer attention to the governing design specification and service conditions.
The listed pipe weight is useful for estimating, transport planning, support reactions, lifting studies, and preliminary structural coordination. It should not be used as a substitute for a project-specific stress analysis, support design, pressure evaluation, or supplier confirmation. For a complete piping reference workflow, connect this page with the site’s related resources on pipe dimensions, pipe schedules, pipe weight calculations, fittings, flanges, and CAD/DWG downloads.
Additional Questions About 28 Inch Schedule 10 Pipe
Is Schedule 10 a pressure rating?
No. Schedule 10 identifies a pipe wall-thickness series. Pressure capability depends on the material, design conditions, temperature, manufacturing requirements, corrosion allowance, joining method, and governing engineering code.
Should the nominal size be used as the pipe diameter in a drawing?
No. NPS 28 and DN700 identify the nominal pipe size, but drawings and coordination work should use the published outside diameter, inside diameter, and wall thickness where a physical dimension is required.
Why can the supplied pipe weight differ from the reference value?
Reference weight is based on standard dimensional data. Actual supplied weight can vary because of manufacturing tolerance, material grade, product requirements, and supplier practice. Confirm the mill or supplier documentation for procurement and lifting work.
Where can this data be used in a piping workflow?
The data can support preliminary layout, drafting, material takeoffs, fabrication references, transport planning, and coordination with fittings, flanges, supports, and structural systems. Final design decisions require project-specific verification.