Use this reference when checking the dimensional identity of Schedule 160 pipe 1 1/2 inch (DN40) in piping layouts, fabrication documents, material takeoffs, and CAD models. The table below separates nominal size terminology from the physical outside diameter, wall thickness, bore, and mass values used for engineering coordination.
For related work, compare this page with the site’s references for pipe schedules, steel pipe dimensions, pipe fittings, and flange dimensions. Those references help connect a pipe dimension check with the adjoining components and drafting information needed for a complete piping review.
Schedule 160 pipe 1 1/2 inch (DN40) 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 1/2 Schedule 160 pipe based on ASME B36.10.
1 1/2 Inch Schedule 160 Pipe Dimensions
- Nominal Pipe Size (NPS): 1 1/2 inch
- Diameter Nominal (DN): DN40
- Outside Diameter (OD): 48.3 mm
- Wall Thickness: 7.14 mm
- Inside Diameter (ID): 34.02 mm
- Pipe Weight: 7.25 kg/m
- Pipe Weight Filled With Water: 8.15 kg/m
- Reference Standard: ASME B36.10
- Pipe Type: Steel Pipe
Schedule 160 Pipe 1 1/2 Inch Data Table
| Pipe Size | DN | OD (mm) | Wall Thickness (mm) | ID (mm) | Weight (kg/m) |
|---|---|---|---|---|---|
| 1 1/2 inch | 40 | 48.3 | 7.14 | 34.02 | 7.25 |
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 1/2 Inch Schedule 160 Pipe
NPS 1 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, plant utility systems, structural loading checks, 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 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 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 1/2 inch Schedule 160 pipe?
The outside diameter is 48.3 mm.
What is the wall thickness of DN40 Schedule 160 pipe?
The wall thickness is 7.14 mm.
What is the inside diameter of NPS 1 1/2 Schedule 160 pipe?
The inside diameter is 34.02 mm.
How much does 1 1/2 inch Schedule 160 pipe weigh?
The approximate weight is 7.25 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 1/2 inch (DN40) has an outside diameter of 48.3 mm, wall thickness of 7.14 mm, inside diameter of 34.02 mm, and a weight of 7.25 kg/m. It is a useful reference for piping design, fabrication, estimating, and heavy-duty industrial engineering work.
How to Use This Pipe Reference
Start with the nominal designation shown on the drawing, specification, or material list, then confirm the corresponding DN designation. Do not treat the nominal size as a direct measurement of the pipe bore. For physical clearance, routing, connection, and weight checks, use the listed outside diameter, wall thickness, inside diameter, and mass data.
Schedule, size, and outside diameter
A pipe schedule identifies a wall-thickness series for a given nominal pipe size. In this entry, the schedule designation is paired with the NPS and DN designations, while the outside diameter remains the key envelope dimension for layout and fit-up checks. The heavier wall affects the available internal passage and the pipe mass, so schedule selection should be carried consistently into calculations, drawings, and procurement documents.
Drafting and CAD coordination
When using the downloadable DWG, verify the drawing units, layer conventions, centerline assumptions, and connection details against the project’s drafting standard before incorporating the geometry into a model. The dimensional table is useful for checking the pipe envelope, but it does not by itself define end preparation, joining method, material grade, corrosion allowance, or a pressure design basis.
Weight and engineering review
Use the listed pipe mass for preliminary estimating, support coordination, handling studies, and structural load discussions. A final design review may also need to account for contents, insulation, coatings, fittings, valves, supports, fabrication tolerances, and the applicable piping code or project specification. Confirm supplier data before issuing a purchase order or relying on the value for a detailed structural calculation.
Related reference topics
- Pipe schedule tables for comparing wall-thickness series
- Steel pipe outside-diameter and inside-diameter references
- Butt-weld and socket-weld fitting dimensions
- Flange dimensions and facing details
- Pipe support and line-weight calculation guidance
- DWG and CAD resources for piping layouts
Additional Questions About Schedule 160 Pipe
Does Schedule 160 alone specify a pressure rating?
No. A schedule describes a pipe wall-thickness series, not a complete allowable-pressure rating. Pressure suitability depends on factors such as material specification, design temperature, manufacturing requirements, corrosion allowance, joining details, and the governing design code.
Is DN40 the measured inside diameter?
No. DN is a nominal designation used to identify a pipe size family. It should not be substituted for a measured bore or used as a direct replacement for the inside-diameter value in the table.
What should be checked before connecting fittings?
Confirm the fitting standard, outside-diameter compatibility, wall or bore requirements, end connection, material specification, and project design conditions. A nominal-size match alone does not confirm that two components are interchangeable.
Can the listed mass be used for a final support design?
It can support preliminary coordination, but final support and structural checks should include all relevant permanent and operating loads and should use verified project and supplier information.