This reference page explains how to read the dimensional data for Schedule 60 Pipe 20 Inch (DN500 mm) and how the listed dimensions support piping layout, procurement, fabrication, and drafting work. Use the table and data list as the primary reference for this pipe size, then verify material, service, code, and project requirements before specifying it.
The page also includes a downloadable DWG resource for users preparing layouts or checking dimensional information in CAD. For broader comparisons, related references such as a pipe schedule chart, NPS and DN pipe size guide, and steel pipe dimensions reference can help place this size in context.
Schedule 60 Pipe 20 Inch (DN500 mm) is a carbon steel pipe size commonly used in heavy-duty piping systems where higher wall thickness and stronger mechanical performance are required. This pipe size is typically referenced under ANSI/ASME B36.10, which is the standard used for wrought steel pipe dimensions.
For this size, the pipe has an outside diameter (OD) of 508 mm, an inside diameter (ID) of 466.76 mm, and a wall thickness of 20.62 mm. The listed pipe weight is 247.84 kg/m, while the weight including water is 418.86 kg/m.
Schedule 60 Pipe 20 Inch (DN500 mm) Dimension Table
| Pipe Size | NPS | DN | Outside Diameter (OD) | Inside Diameter (ID) | Wall Thickness | Weight |
|---|---|---|---|---|---|---|
| Schedule 60 Pipe | 20 Inch | DN500 | 508 mm | 466.76 mm | 20.62 mm | 247.84 kg/m |
What Is Schedule 60 Pipe?
Schedule 60 pipe is a heavier wall steel pipe schedule used when a thicker pipe wall is needed compared with lighter schedules such as Schedule 40. In general, a thicker wall can provide improved strength, durability, and pressure-handling capability, depending on material grade, design temperature, and service conditions.
Pipe schedule selection should always be checked against project requirements such as design pressure, temperature, corrosion allowance, piping code, and fabrication method before final use.
20 Inch Schedule 60 Pipe Data
- Standard: ANSI/ASME B36.10
- Pipe Type: Steel Pipe
- NPS: 20 Inch
- DN: DN500
- OD: 508 mm
- ID: 466.76 mm
- Wall Thickness: 20.62 mm
- Pipe Weight: 247.84 kg/m
- Weight Including Water: 418.86 kg/m
Common Uses of 20 Inch Schedule 60 Pipe
20 inch Schedule 60 steel pipe may be used in applications where a large internal flow path and thicker wall construction are needed. Typical uses may include:
- Industrial process piping systems
- Water transmission and utility piping
- Oil and gas piping applications
- Power plant and heavy-duty piping systems
- Projects requiring higher wall thickness than lighter schedules
Why DN500 Pipe Dimensions Matter
Many users search for DN500 pipe dimensions to verify pipe routing, structural support loads, transportation limits, fabrication details, and compatibility with fittings or connected equipment. For a 20 inch pipe, accurate dimensional data is especially important because weight, lifting, and installation requirements can increase significantly.
Knowing the correct 20 inch Schedule 60 pipe dimensions also helps engineers, detailers, estimators, buyers, and students compare this pipe size with other schedules when reviewing wall thickness, internal flow area, and total pipe weight.
NPS 20 and DN500 Explained
NPS stands for Nominal Pipe Size in inches, while DN stands for Diameter Nominal in metric designation. For this pipe size:
- NPS 20 = inch-based nominal pipe size
- DN500 = metric nominal designation
Although DN is shown in metric form, the actual outside diameter should always be checked from the dimensional standard. For this size, the OD is 508 mm.
Reference for Schedule 60 Pipe 20 Inch
This page provides a quick dimensional reference for engineers, piping designers, students, fabricators, and procurement teams looking for Schedule 60 Pipe 20 Inch (DN500 mm) data in a clear format.
Reference Standard: ANSI/ASME B36.10 steel pipe dimensions.
How to Read the Schedule 60 Pipe Data
The dimensional table separates nominal identification from physical dimensions. NPS and DN identify the nominal pipe size, while outside diameter, inside diameter, and wall thickness describe the pipe geometry used for layout and compatibility checks.
The outside diameter is particularly important when checking clearances, supports, clamps, insulation space, fittings, and connections to equipment. The inside diameter is relevant to flow-path review and hydraulic calculations. Wall thickness is used when comparing schedules and reviewing fabrication, corrosion allowance, and code-based design requirements.
Weight and Installation Planning
The listed pipe weight supports early estimating, handling reviews, transportation planning, and support-load coordination. The separate water-included weight is useful when considering a filled line, although final support and structural checks should account for the complete piping arrangement, contents, insulation, valves, fittings, and other attached components.
Schedule selection is not a pressure rating by itself. Final acceptance depends on the applicable piping code, material specification, design pressure, temperature, corrosion allowance, joining method, and project requirements. Engineers should verify these conditions before using the dimensional reference for design or procurement.
Related Pipe and CAD References
- Pipe schedule references: Compare wall-thickness designations across related steel pipe sizes and schedules.
- Flange and fitting dimensions: Check connection interfaces separately from the pipe barrel dimensions.
- Pipe support guidance: Use the listed weight as an input to a complete support and load review, not as a standalone design result.
- CAD and DWG resources: Download the referenced drawing when developing layouts, routing studies, or fabrication documentation.
When using the DWG, confirm drawing units, layer conventions, dimensional assumptions, and project-specific tolerances before incorporating it into controlled design documents.
Frequently Asked Questions
What does Schedule 60 mean for this pipe?
Schedule 60 identifies a heavier-wall pipe designation. It indicates the dimensional schedule, but it does not by itself establish allowable pressure, temperature limits, material grade, or fitness for a particular service.
Are NPS 20 and DN500 the same designation?
They are the inch-based and metric nominal designations used to identify this pipe size. Nominal designations should not be treated as the actual outside diameter; the dimensional data should be checked directly when designing layouts or connections.
Why are both outside diameter and inside diameter needed?
Outside diameter supports clearance, support, fitting, and equipment-interface checks. Inside diameter describes the available flow path and is relevant to hydraulic review. Wall thickness relates the two dimensions and supports schedule comparison.
What does the weight including water represent?
It represents the listed pipe weight with water included. It can assist preliminary filled-line planning, but a final load review should also include fittings, valves, insulation, supports, contents other than water, and other project-specific loads.
Can this dimensional data be used for final pipe design?
The data is a dimensional reference, not a complete design approval. Final selection requires verification of the governing code, material specification, pressure and temperature conditions, corrosion allowance, fabrication requirements, and project constraints.
Where can I use the DWG file?
The DWG can support preliminary CAD layout, routing, dimensional review, and drafting workflows. Confirm its units and project requirements before using it in controlled drawings or fabrication documentation.