This reference page is designed for engineers, drafters, estimators, fabricators, and CAD users who need a quick dimensional check for Schedule 30 Pipe 30 Inch (DN750). Use the data below when reviewing piping layouts, preparing material takeoffs, checking clearances, or coordinating large-diameter pipe with fittings and supports.
The page separates nominal designations from physical dimensions so that NPS, DN, outside diameter, inside diameter, wall thickness, and weight can be read consistently. Before using the values for procurement or final design, confirm the applicable project specifications, material requirements, end connections, and engineering design conditions.
Schedule 30 pipe 30 inch (DN750) is a large-diameter 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 30 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.
30 Inch Schedule 30 Pipe Dimensions
- Nominal Pipe Size (NPS): 30 inch
- Diameter Nominal (DN): DN750
- Outside Diameter (OD): 762 mm
- Wall Thickness: 15.88 mm
- Inside Diameter (ID): 730.24 mm
- Pipe Weight: 292.2 kg/m
- Pipe Weight Including Water: 710.8 kg/m
- Standard: ASME B36.10
Schedule 30 Pipe 30 Inch Data Table
| NPS | DN | Outside Diameter (OD) | Wall Thickness | Inside Diameter (ID) | Weight |
|---|---|---|---|---|---|
| 30 inch | DN750 | 762 mm | 15.88 mm | 730.24 mm | 292.2 kg/m |
Understanding 30 Inch Schedule 30 Pipe
30 inch Schedule 30 pipe is a large steel pipe size used as a reference in industrial piping layouts, utility systems, water transmission lines, process design studies, and CAD drafting. With an outside diameter of 762 mm and a wall thickness of 15.88 mm, this pipe size is suitable for large-flow 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 30, Schedule 30 gives a wall thickness of 15.88 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 292.2 kg/m helps with transport estimates, lifting plans, and support loading. If the pipe is filled with water, the total weight increases to 710.8 kg/m, which is useful for operating load calculations and support checks.
Common Uses of DN750 Schedule 30 Pipe
DN750 Schedule 30 pipe may be referenced in industrial utility systems, large 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 large-diameter piping systems.
Difference Between NPS 30 and DN750
NPS 30 is the inch-based nominal pipe size designation, while DN750 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 762 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 30 Inch
- Pipe Size: 30 inch
- DN: DN750
- OD: 762 mm
- ID: 730.24 mm
- Wall Thickness: 15.88 mm
- Weight: 292.2 kg/m
- Weight Including Water: 710.8 kg/m
- Reference Standard: ASME B36.10
Related Pipe Size Pages
Conclusion
Schedule 30 Pipe 30 Inch (DN750) is an important large-diameter steel pipe reference for piping design, drafting, estimation, and fabrication work. With its 762 mm outside diameter, 15.88 mm wall thickness, and 292.2 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 This Pipe Reference
The nominal size identifies the pipe within the NPS and DN systems; it is not a direct substitute for measuring the outside or inside diameter. For layout and drafting, the listed outside diameter is the key envelope dimension. It helps with routing, clearance checks, insulation space, clamp selection, and coordination with adjacent equipment.
The inside diameter is useful as a reference for flow-area review and internal clearance. It should not be treated as a complete hydraulic design input without also checking the fluid, lining, roughness, operating condition, fittings, valves, and applicable design method.
Using the Weight Information
The listed pipe weight is useful for preliminary material estimates, handling reviews, transport planning, and support-load coordination. The water-filled figure represents a different loading condition from the empty pipe value. In a support or structural review, the engineer may also need to consider fittings, valves, flanges, insulation, coatings, contents other than water, temporary loads, and local support arrangements.
Schedule, Wall Thickness, and Design Checks
Schedule identifies a wall-thickness series for a given nominal pipe size. It does not, by itself, establish a complete pressure rating or confirm that the pipe is suitable for a particular service. Material grade, corrosion allowance, temperature, joining method, fabrication requirements, and the governing project code should be verified separately.
CAD and Drafting Workflow
For CAD work, begin with the listed outside diameter when creating the pipe envelope, then use the wall thickness and inside diameter for section views or detailed coordination. The downloadable DWG can support drafting workflows, but users should check units, layer conventions, insertion scale, and geometry against the project template before issuing drawings.
Frequently Asked Questions
What is the difference between NPS 30 and DN750?
NPS 30 is the inch-based nominal pipe designation, while DN750 is the metric nominal reference used for the same pipe size category on this page. Neither designation should be used as a substitute for the listed physical dimensions.
What does Schedule 30 indicate?
Schedule 30 identifies the wall-thickness series associated with this nominal pipe size. The schedule affects the available internal diameter, pipe weight, fabrication details, and coordination with connected components.
Can the listed weight be used for a final support design?
It can support preliminary load review, but it should not be the only input for final support design. The complete load case may include contents, fittings, valves, insulation, coatings, environmental effects, and project-specific support conditions.
Does Schedule 30 alone define the pipe pressure rating?
No. A schedule is a dimensional wall-thickness designation, not a complete pressure-rating statement. Final service verification also requires the applicable material, temperature, design code, corrosion allowance, and project requirements.
Why are both empty-pipe and water-filled weights shown?
They represent different planning conditions. The empty-pipe value helps with material handling and transport review, while the water-filled value provides a reference for operating-load and support-load checks when water is present.
Is the DWG ready for direct project issue?
The DWG is provided as a drafting reference. Confirm its units, scale, layers, dimensions, and project CAD standards before incorporating it into an issued drawing or fabrication document.