Use this page as a quick reference when checking 4 inch Schedule 5 pipe dimensions for layout, drafting, fabrication, and material takeoff work. The dimensional table provides the key outside diameter, inside diameter, wall thickness, and weight information for the DN100 designation.
For efficient project coordination, compare the dimensional data with related references for pipe schedules, NPS and DN terminology, fittings, flanges, and pipe support loads. The downloadable DWG can also help drafters incorporate the pipe profile into CAD layouts, subject to project-specific verification.
Schedule 5 Pipe 4 Inch (DN100) is a steel pipe size commonly used in industrial piping systems that require good flow capacity with a relatively light wall thickness. This pipe size is often used in utility piping, water 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.
4 Inch Schedule 5 Pipe Dimensions
- Pipe Schedule: 5
- Nominal Pipe Size: 4 Inch
- DN Size: DN100
- Outside Diameter (OD): 114.3 mm
- Inside Diameter (ID): 110.08 mm
- Wall Thickness: 2.11 mm
- Pipe Weight: 5.84 kg/m
- Pipe Weight Including Water: 15.35 kg/m
- Standard: ANSI/ASME B36.10
Schedule 5 Pipe 4 Inch Dimension Table
| Pipe Schedule | NPS (Inch) | DN (mm) | OD (mm) | ID (mm) | Wall Thickness (mm) | Weight (kg/m) |
|---|---|---|---|---|---|---|
| 5 | 4 | 100 | 114.3 | 110.08 | 2.11 | 5.84 |
What Is 4 Inch Schedule 5 Pipe?
A 4 inch Schedule 5 pipe is a steel pipe with a nominal size of 4 inches and a relatively thin wall thickness compared with heavier schedules. For this size, the outside diameter is fixed at 114.3 mm, while the inside diameter is 110.08 mm based on a wall thickness of 2.11 mm.
Schedule 5 pipe is often selected when a project needs good 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 4 Inch Used?
This pipe size is commonly used in applications that need good flow capacity with relatively light wall thickness. Typical uses include:
- Water transfer and distribution systems
- Utility and low-pressure industrial piping
- Process and service lines
- Pipe spool fabrication and layout work
- General steel piping projects
Why Pipe Dimensions Matter
Accurate 4 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.
4 Inch Schedule 5 Pipe Weight Information
The nominal weight of this pipe size is 5.84 kg/m. When filled with water, the combined weight becomes approximately 15.35 kg/m. This information is useful for pipe support design, structural coordination, and lifting preparation in piping systems.
Difference Between NPS 4 and DN100
NPS 4 is the inch-based nominal pipe size, while DN100 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 4 inch Schedule 5 pipe dimensions, DN100 Schedule 5 pipe dimensions, 4 inch pipe weight per meter, DN100 pipe dimensions, or DN100 sch 5 pipe dimensions.
Conclusion
Schedule 5 Pipe 4 Inch (DN100) has an outside diameter of 114.3 mm, an inside diameter of 110.08 mm, a wall thickness of 2.11 mm, and a weight of 5.84 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 4 inch Schedule 5 pipe dimensions and DN100 pipe dimensions in one place.
How to Use This Pipe Dimension Reference
The values on this page are useful for coordinating pipe with fittings, clamps, supports, sleeves, and connection details. In particular, the outside diameter is generally the key interface dimension for external components, while the inside diameter is useful when reviewing flow area and internal clearances.
Because NPS 4 and DN100 are nominal designations, the nominal name should not be treated as a direct measurement of the pipe’s outside or inside diameter. Always use the listed dimensional values when preparing drawings, checking clearances, or coordinating with other piping components.
Important Selection Checks
A schedule designation describes a wall-thickness series; it does not, by itself, establish an allowable operating pressure or confirm that a pipe is suitable for a particular service. Final selection should also consider the specified material, manufacturing requirements, corrosion or erosion allowance, temperature, fluid service, joining method, and governing project specification.
The listed pipe weight can support preliminary handling, transport, and support coordination. The water-filled value is a reference load for the stated condition; actual installed loads may also include fittings, valves, insulation, coatings, supports, and the conveyed fluid. Confirm the complete load case before structural design or lifting planning.
Related Pipe Design References
For broader design work, continue with references covering pipe schedule charts, steel pipe weights, pipe fittings, flange dimensions, and pipe support design. These related topics help connect the nominal pipe size to the components and loads used in a complete piping system.
The available Schedule 5 Pipe 4 Inch DN100 DWG is intended as a drafting aid. Review units, layer conventions, connection details, and project CAD requirements before placing the file in a controlled design document.
Frequently Asked Questions
What does 4 inch Schedule 5 mean?
It identifies a nominal 4 inch steel pipe size with a Schedule 5 wall designation. The page’s table provides the corresponding DN designation and dimensional reference values.
Are NPS 4 and DN100 the same pipe size?
They are different nominal naming systems used to identify the same nominal pipe size. The actual outside diameter, inside diameter, and wall thickness should be taken from the applicable dimension reference rather than inferred from the nominal name.
Does Schedule 5 specify the pipe pressure rating?
No. A schedule identifies a wall-thickness series, but pressure suitability depends on additional factors such as material, temperature, design rules, joint details, corrosion allowance, and service conditions.
Why are pipe weight and water-filled weight useful?
They help with preliminary support coordination, transport, handling, and lifting reviews. A complete installed load calculation should also account for attached components and project-specific contents or external loads.
Can the DWG file be used directly for fabrication?
The DWG is a CAD reference resource, not a substitute for an approved fabrication drawing or project specification. Check units, tolerances, end conditions, material requirements, and connection details before fabrication.