This page is a practical reference for engineers, drafters, fabricators, and buyers checking 30 inch Schedule 5 pipe dimensions. It brings together the nominal size designation, dimensional data, weight information, typical uses, and a downloadable CAD reference in one location.
Use the dimensional values for coordination and preliminary planning, then confirm material specifications, manufacturing tolerances, joining details, design conditions, and project requirements before fabrication or procurement.
Schedule 5 Pipe 30 Inch (DN750) is a large steel pipe size commonly used in industrial piping systems that require high flow capacity with a relatively light wall thickness. This pipe size is often used in utility piping, water transfer systems, low-pressure industrial service, and general steel pipe fabrication work.
This dimension data is based on ANSI/ASME B36.10, which is the standard commonly used for carbon steel pipe dimensions.
30 Inch Schedule 5 Pipe Dimensions
- Pipe Schedule: 5
- Nominal Pipe Size: 30 Inch
- DN Size: DN750
- Outside Diameter (OD): 762 mm
- Inside Diameter (ID): 749.3 mm
- Wall Thickness: 6.35 mm
- Pipe Weight: 118.34 kg/m
- Pipe Weight Including Water: 559.07 kg/m
- Standard: ANSI/ASME B36.10
Schedule 5 Pipe 30 Inch Dimension Table
| Pipe Schedule | NPS (Inch) | DN (mm) | OD (mm) | ID (mm) | Wall Thickness (mm) | Weight (kg/m) |
|---|---|---|---|---|---|---|
| 5 | 30 | 750 | 762 | 749.3 | 6.35 | 118.34 |
What Is 30 Inch Schedule 5 Pipe?
A 30 inch Schedule 5 pipe is a steel pipe with a nominal size of 30 inches and a relatively thin wall thickness compared with heavier schedules. For this size, the outside diameter is fixed at 762 mm, while the inside diameter is 749.3 mm based on a wall thickness of 6.35 mm.
Schedule 5 pipe is often selected when a project needs large flow capacity, reduced pipe weight, and easier handling compared with thicker wall pipes. It is commonly referenced in steel piping design, drafting, fabrication, and material takeoff work.
Where Is Schedule 5 Pipe 30 Inch Used?
This pipe size is commonly used in applications that need very large flow capacity with moderate wall thickness. Typical uses include:
- Water transfer and distribution systems
- Utility and low-pressure industrial piping
- Large process and service lines
- Pipe spool fabrication and layout work
- General steel piping projects
Why Pipe Dimensions Matter
Accurate 30 inch Schedule 5 pipe dimensions are important for piping layout, fabrication, transport planning, support design, and installation work. Engineers and designers often check OD, ID, wall thickness, and weight before selecting supports, fittings, welding details, and handling methods.
The outside diameter is important for matching supports, clamps, and pipe accessories. The inside diameter helps estimate internal flow area and system capacity. The wall thickness affects mechanical strength and specification compliance, while the pipe weight per meter is useful for lifting plans, transport, and structural loading calculations.
30 Inch Schedule 5 Pipe Weight Information
The nominal weight of this pipe size is 118.34 kg/m. When filled with water, the combined weight becomes approximately 559.07 kg/m. This information is useful for pipe support design, structural coordination, and lifting preparation in large piping systems.
Difference Between NPS 30 and DN750
NPS 30 is the inch-based nominal pipe size, while DN750 is the metric designation used in international drawings and specifications. Both terms refer to the same nominal pipe size, and users may search by either inch size or DN format depending on project standards.
Common Search Terms for This Pipe Size
Users may also search for this pipe using related keywords such as 30 inch Schedule 5 pipe dimensions, DN750 Schedule 5 pipe dimensions, 30 inch pipe weight per meter, DN750 pipe dimensions, or DN750 sch 5 pipe dimensions.
Conclusion
Schedule 5 Pipe 30 Inch (DN750) has an outside diameter of 762 mm, an inside diameter of 749.3 mm, a wall thickness of 6.35 mm, and a weight of 118.34 kg/m. It is a useful steel pipe reference size for design, drafting, fabrication, and procurement work.
This page provides a quick reference for engineers, drafters, fabricators, and buyers who need reliable 30 inch Schedule 5 pipe dimensions and DN750 pipe dimensions in one place.
How to Use This 30 Inch Schedule 5 Pipe Reference
The table is useful when a piping layout, material takeoff, or fabrication drawing requires the relationship between nominal size, outside diameter, inside diameter, wall thickness, and mass per unit length. These properties serve different coordination purposes and should not be treated as interchangeable.
- Nominal size: Use the NPS and DN designations to identify the pipe size across drawings, specifications, and procurement documents.
- Outside diameter: Check this value when coordinating supports, clamps, sleeves, fittings, and clearances.
- Inside diameter: Use it for flow-area checks and internal-clearance coordination.
- Wall thickness: Confirm it when reviewing fabrication details, welding preparation, corrosion allowances, and specification requirements.
- Weight: Use the listed mass information as an input for handling, transport, support, and structural coordination checks.
Schedule, Design Conditions, and Verification
A pipe schedule identifies a standardized wall-thickness designation for a nominal pipe size. It does not, by itself, establish an allowable operating pressure or confirm that a pipe is suitable for a particular service. Material grade, temperature, corrosion allowance, manufacturing specification, joining method, code requirements, and project design conditions must also be reviewed by the responsible engineer.
CAD and Drafting Workflow
The accompanying DWG file can support preliminary layout and drafting work. Before issuing a fabrication or construction drawing, verify the drawing units, layer conventions, end conditions, connection geometry, dimensional tolerances, and coordination with the selected fittings and flanges. A CAD reference should complement—not replace—the governing project documents and approved manufacturer information.
Frequently Asked Questions
What does NPS 30 mean?
NPS 30 is the inch-based nominal pipe size designation for this pipe. DN750 is the corresponding metric designation used in many international drawings and specifications.
What does Schedule 5 identify?
Schedule 5 identifies the pipe wall-thickness designation associated with this nominal pipe size. The schedule should be checked together with the applicable material and piping specification.
Does Schedule 5 alone provide a pressure rating?
No. A pressure assessment requires more information than the schedule designation, including material, temperature, design code, corrosion considerations, joint details, and the applicable project requirements.
Why are both outside and inside diameter important?
The outside diameter supports external coordination with clamps, supports, sleeves, and fittings. The inside diameter is relevant to internal flow-area checks and clearance considerations.
Can the listed pipe weight be used directly for support design?
The listed weight is a useful coordination input, but support design should also account for the project loading basis, contents, insulation, valves, fittings, dynamic effects, and applicable engineering requirements.
Is the DWG file ready for fabrication?
The DWG is a reference resource for drafting and layout. Confirm units, geometry, tolerances, connection details, and project approvals before using any CAD file for fabrication or construction.