This reference page gives a focused dimensional overview of 2 inch Schedule 30 pipe, also identified as NPS 2 and DN50. Use the data below when checking piping layouts, clearance envelopes, material takeoffs, CAD drawings, and preliminary support or transport reviews.
Because nominal pipe size is a designation rather than a direct measurement, the outside diameter, wall thickness, and inside diameter are the key values to use for physical coordination. The table and quick-reference sections provide the authoritative local values for this page, while the notes below explain how to apply them responsibly.
Schedule 30 pipe 2 inch (DN50) is a standard steel pipe size commonly used in piping design, drafting, fabrication, estimation, and industrial layout work. This page provides the standard dimensions, wall thickness, inside diameter, and weight per meter for NPS 2 Schedule 30 pipe based on ASME B36.10.
For engineers, designers, estimators, and CAD users, quick access to accurate pipe data helps improve piping layout, support planning, weight checks, transport review, and fabrication coordination during project development.
2 Inch Schedule 30 Pipe Dimensions
- Nominal Pipe Size (NPS): 2 inch
- Diameter Nominal (DN): DN50
- Outside Diameter (OD): 60.3 mm
- Wall Thickness: 3.18 mm
- Inside Diameter (ID): 53.94 mm
- Pipe Weight: 4.48 kg/m
- Pipe Weight Including Water: 6.76 kg/m
- Standard: ASME B36.10
Schedule 30 Pipe 2 Inch Data Table
| NPS | DN | Outside Diameter (OD) | Wall Thickness | Inside Diameter (ID) | Weight |
|---|---|---|---|---|---|
| 2 inch | DN50 | 60.3 mm | 3.18 mm | 53.94 mm | 4.48 kg/m |
Understanding 2 Inch Schedule 30 Pipe
2 inch Schedule 30 pipe is a standard steel pipe size used as a reference in industrial piping layouts, utility systems, water lines, process design studies, and CAD drafting. With an outside diameter of 60.3 mm and a wall thickness of 3.18 mm, this pipe size is suitable for light to medium piping applications where designers need a balance between flow capacity and pipe wall strength.
What Does Schedule 30 Mean?
Schedule 30 refers to the wall thickness series of the pipe. For NPS 2, Schedule 30 gives a wall thickness of 3.18 mm. The schedule affects the inside diameter, total pipe weight, fabrication planning, and compatibility with supports, fittings, and structural loading requirements.
Why These Pipe Dimensions Matter
Accurate pipe dimension data is important for piping layouts, spool drawings, support design, structural load review, and material takeoff. Knowing that this pipe weighs 4.48 kg/m helps with transport estimates, lifting plans, and support loading. If the pipe is filled with water, the total weight increases to 6.76 kg/m, which is useful for operating load calculations and support checks.
Common Uses of DN50 Schedule 30 Pipe
DN50 Schedule 30 pipe may be referenced in industrial utility systems, water transfer lines, plant layout studies, process piping documentation, and engineering design work. It is also useful for piping designers, CAD users, estimators, and procurement teams who need standard steel pipe dimensions for piping systems.
Difference Between NPS 2 and DN50
NPS 2 is the inch-based nominal pipe size designation, while DN50 is the metric nominal diameter reference. Both refer to the same pipe size category on this page. The actual standard outside diameter for this size is 60.3 mm.
How to Use This Data
You can use this page to quickly check:
- pipe outside diameter for layout and clearance
- inside diameter for flow reference
- wall thickness for schedule comparison
- weight per meter for estimation and transport planning
- water-filled weight for support and structural load review
Quick Reference for Schedule 30 Pipe 2 Inch
- Pipe Size: 2 inch
- DN: DN50
- OD: 60.3 mm
- ID: 53.94 mm
- Wall Thickness: 3.18 mm
- Weight: 4.48 kg/m
- Weight Including Water: 6.76 kg/m
- Reference Standard: ASME B36.10
Related Pipe Size Pages
Conclusion
Schedule 30 Pipe 2 Inch (DN50) is an important steel pipe reference for piping design, drafting, estimation, and fabrication work. With its 60.3 mm outside diameter, 3.18 mm wall thickness, and 4.48 kg/m pipe weight, it provides useful dimensional data for engineers and designers who need fast and accurate pipe information.
Note: NPS = Nominal Pipe Size, DN = Diameter Nominal. Dimensions and weights shown here are based on ASME B36.10 steel pipe data.
How to Read the 2 Inch Schedule 30 Pipe Data
The outside diameter is the primary dimension for layout coordination. It helps with routing, clearance checks, clamp or support interfaces, sleeve coordination, and connection to fittings. The inside diameter is useful as a dimensional flow reference, but final hydraulic calculations should also account for the applicable design basis, internal condition, fittings, valves, and service requirements.
The listed wall thickness identifies the Schedule 30 dimensional series for this nominal size. Schedule is a dimensional designation; it should not be treated by itself as a complete pressure rating or as a substitute for selecting the pipe material, grade, manufacturing specification, joining method, and design conditions.
Practical Drafting and Estimating Notes
- Use the outside diameter when coordinating the pipe with structural steel, pipe supports, penetrations, insulation space, and adjacent equipment.
- Use the inside diameter as a reference for preliminary bore and flow studies, then confirm the requirements of the governing piping or process calculation.
- Apply the listed pipe weight per meter to the actual modeled or measured pipe length when preparing a material estimate or handling review.
- Use the water-filled value only for the stated filled condition. Other contents, coatings, insulation, fittings, valves, and accessories require separate consideration.
- Confirm the project specification and purchasing documents before fabrication or procurement, since dimensional data does not by itself define all material or service requirements.
Using the DWG Reference
The downloadable DWG can support layout and drafting workflows, but imported geometry should be checked against the dimensional table and the project CAD standard. Confirm units, insertion scale, layer conventions, connection details, and any required allowances before using the drawing for fabrication or construction documentation.
For size comparison, review the related Schedule 30 Pipe 1 1/2 Inch (DN40) and Schedule 30 Pipe 2 1/2 Inch (DN65) pages.
Frequently Asked Questions
What is the difference between NPS 2 and DN50?
NPS 2 is the inch-based nominal pipe size designation, while DN50 is the metric nominal reference for the same size category. Neither designation should be used as a direct substitute for the measured outside diameter.
What does Schedule 30 identify?
Schedule 30 identifies a pipe wall-thickness series for a given nominal size. The applicable wall thickness and resulting inside diameter are shown in the page data.
Which dimension should be used for pipe layout?
Use the listed outside diameter for physical layout, clearance, support, and penetration coordination. Use the inside diameter for internal-bore or preliminary flow reference, subject to project verification.
Does Schedule 30 alone establish a pressure rating?
No. A schedule describes dimensional thickness, but pressure capability also depends on factors such as material, design temperature, manufacturing requirements, joining details, corrosion considerations, and the governing design code.
What does the water-filled weight represent?
It represents the page’s stated combined pipe-and-water condition. Actual operating loads may also include contents other than water, insulation, fittings, valves, supports, and other attached components.
Can the DWG be used directly for fabrication?
The DWG is a drafting reference. Check its units and geometry against the page data and project requirements before using it in fabrication or construction documents.