Use this page as a practical reference for 32 inch Schedule 40 pipe dimensions in large-diameter steel piping work. It brings together the nominal size designation, DN equivalent, outside diameter, inside diameter, wall thickness, and weight data needed for drafting, estimating, fabrication planning, and preliminary layout coordination.
For design work, distinguish the nominal pipe size from the measured pipe dimensions. The NPS and DN labels identify the standard size, while the outside diameter, wall thickness, and inside diameter support different checks in a drawing or calculation. Always confirm the applicable material specification, manufacturing requirements, project design basis, and dimensional tolerances before issuing procurement or construction documents.
Schedule 40 pipe 32 inch (DN800) is a standard large-diameter steel pipe size commonly used in piping design, fabrication, drafting, and engineering estimation work. This page provides the standard dimensions and weight data for NPS 32 Schedule 40 pipe based on ANSI / ASME B36.10, including outside diameter, inside diameter, wall thickness, and weight per meter.
This size is often used in industrial piping systems, utility lines, water transfer applications, and fabrication projects where accurate dimensional data is needed for layout, support design, quantity takeoff, and installation planning.
32 Inch Schedule 40 Pipe Dimensions
- Nominal Pipe Size (NPS): 32 inch
- Diameter Nominal (DN): DN800
- Pipe Schedule: Schedule 40
- Outside Diameter (OD): 813 mm
- Wall Thickness: 17.48 mm
- Inside Diameter (ID): 778.04 mm
- Pipe Weight: 342.94 kg/m
- Pipe Weight Including Water: 818.13 kg/m
- Reference Standard: ANSI / ASME B36.10
Schedule 40 Pipe 32 Inch (DN800) Data Table
| NPS | DN | OD (mm) | Wall Thickness (mm) | ID (mm) | Weight (kg/m) |
|---|---|---|---|---|---|
| 32 inch | DN800 | 813 | 17.48 | 778.04 | 342.94 |
What Is 32 Inch Schedule 40 Pipe Used For?
32 inch Schedule 40 pipe is generally used in large industrial and utility piping systems where a standardized steel pipe size is required. Engineers, designers, and fabricators often use this size in:
- Water transmission and distribution systems
- Cooling water piping
- Industrial utility lines
- Process piping systems
- Plant layout and pipe rack coordination
- Fabrication and spool drawing preparation
Because this is a large pipe size, accurate dimensions and weight data are important for structural support design, lifting studies, transport planning, and material estimation.
Why These Dimensions Matter in Engineering
In piping and mechanical design, standard pipe dimensions are used for more than simple identification. The outside diameter is important for supports, clamps, insulation sizing, and equipment connection layouts. The inside diameter affects internal flow area and hydraulic calculations. The wall thickness is important for fabrication, welding preparation, and pipe strength, while the pipe weight per meter is essential for support load calculations and installation planning.
Using the correct DN800 Schedule 40 pipe dimensions helps reduce drafting errors, procurement mistakes, and field fit-up problems during construction and fabrication work.
32 Inch DN800 Schedule 40 Pipe for CAD and Drafting Work
For CAD, BIM, and piping drafting work, this size is commonly listed as NPS 32 or DN800. The standard OD of 813 mm is especially useful for routing clearance, support detailing, and nozzle or equipment connection references in both 2D drawings and 3D models.
This page can be used as a quick reference for 32 inch Schedule 40 pipe dimensions, DN800 pipe dimensions, and Schedule 40 steel pipe weight per meter during design, drafting, and estimation work.
Frequently Asked Questions
What is the outside diameter of 32 inch Schedule 40 pipe?
The outside diameter of 32 inch Schedule 40 pipe is 813 mm.
What is the wall thickness of DN800 Schedule 40 pipe?
The wall thickness is 17.48 mm.
What is the inside diameter of Schedule 40 pipe 32 inch?
The inside diameter is 778.04 mm.
How much does 32 inch Schedule 40 pipe weigh?
The pipe weight is 342.94 kg/m. The weight including water is 818.13 kg/m.
Which standard covers these dimensions?
These dimensions are based on ANSI / ASME B36.10.
Conclusion
Schedule 40 pipe 32 inch (DN800) is an important reference size for industrial piping, drafting, fabrication, and engineering calculations. With an OD of 813 mm, ID of 778.04 mm, wall thickness of 17.48 mm, and weight of 342.94 kg/m, it is a useful standard pipe size for engineers, designers, and estimators working with large-diameter steel piping systems.
For more pipe schedule data, compare this size with nearby standard sizes such as 30 inch, 34 inch, and 36 inch Schedule 40 pipe pages.
How to Use This DN800 Pipe Reference
The dimensional list and table above are useful when preparing piping layouts, equipment connection drawings, support concepts, material takeoffs, and fabrication documentation. The outside diameter is the principal envelope dimension for routing and external interfaces. The inside diameter is the reference dimension for internal passage and flow-related evaluations. Wall thickness and pipe mass provide additional inputs for fabrication coordination and load planning.
Pipe weight per meter should be treated as a reference for the stated pipe condition. Actual shipped or installed weight can also depend on the selected material, coatings, lining, fittings, valves, insulation, and contents. The water-filled figure shown in the source data should not be substituted for a project-specific operating or test load without checking the design basis.
Checks Before Using the Dimensions in a Drawing
- Confirm that the drawing identifies the pipe as NPS 32 and DN800 where both conventions are required.
- Use the listed outside diameter when coordinating clamps, supports, insulation space, sleeves, and equipment interfaces.
- Use the listed inside diameter only for the applicable internal-flow or clearance evaluation; verify any project allowances separately.
- Check the pipe material, joining method, corrosion or lining requirements, and applicable project specifications before fabrication.
- Coordinate the pipe data with related fittings, flanges, valves, supports, and the downloadable CAD resource.
Related Pipe Reference Topics
Readers comparing large-diameter piping can continue to the site’s pipe schedule reference, Schedule 40 pipe dimensions, pipe weight tables, and related flange and fitting dimensions. Nearby NPS sizes can also help with preliminary routing comparisons, but each size should be checked against its own source data rather than estimated from this page.
Additional Questions About 32 Inch Schedule 40 Pipe
Is DN800 the same as a measured pipe diameter?
No. DN800 is the metric nominal designation associated with this pipe size. The actual dimensional references for layout and checking are the listed outside diameter, inside diameter, and wall thickness.
Can the listed weight be used for support design?
It can serve as a pipe-mass reference, but support design should also consider the project condition, contents, insulation, fittings, valves, operating effects, and applicable structural requirements. Verify the complete load case with the responsible engineer.
Does Schedule 40 identify the material grade?
No. The schedule identifies a standardized wall-thickness designation for the stated nominal pipe size. Material grade, manufacturing requirements, surface condition, and testing requirements must be confirmed separately from the project specification and procurement documents.
Can this data be used directly in a CAD model?
Use the listed outside diameter and wall thickness as reference inputs for the model, then check the downloaded DWG and the project drafting standard before issuing drawings. Connection details for fittings and equipment should be coordinated separately.
Why should nearby pipe sizes be checked individually?
Nominal sizes are standardized designations, and their outside diameters, wall thicknesses, inside diameters, and weights do not follow a simple visual scaling rule. Use the authoritative table for each size being compared.