Schedule 80 Pipe 20 Inch (DN500 mm) is a carbon steel pipe size commonly used in heavy-duty piping systems where thicker wall construction 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 455.62 mm, and a wall thickness of 26.19 mm. The listed pipe weight is 311.19 kg/m, while the weight including water is 474.14 kg/m.
Schedule 80 Pipe 20 Inch (DN500 mm) Dimension Table
| Pipe Size | NPS | DN | Outside Diameter (OD) | Inside Diameter (ID) | Wall Thickness | Weight |
|---|---|---|---|---|---|---|
| Schedule 80 Pipe | 20 Inch | DN500 | 508 mm | 455.62 mm | 26.19 mm | 311.19 kg/m |
What Is Schedule 80 Pipe?
Schedule 80 pipe is a heavy-wall steel pipe schedule commonly selected when a thicker wall is needed than lighter schedules such as Schedule 40. In general, the thicker wall of Schedule 80 can provide higher strength, better durability, and greater pressure capability, depending on material grade, design temperature, code requirements, 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 80 Pipe Data
- Standard: ANSI/ASME B36.10
- Pipe Type: Steel Pipe
- NPS: 20 Inch
- DN: DN500
- OD: 508 mm
- ID: 455.62 mm
- Wall Thickness: 26.19 mm
- Pipe Weight: 311.19 kg/m
- Weight Including Water: 474.14 kg/m
Common Uses of 20 Inch Schedule 80 Pipe
20 inch Schedule 80 steel pipe may be used in applications where a large internal flow path and thicker wall construction are required. 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 heavier 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 80 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 80 Pipe 20 Inch
This page provides a quick dimensional reference for engineers, piping designers, students, fabricators, and procurement teams looking for Schedule 80 Pipe 20 Inch (DN500 mm) data in a clear format.
Reference Standard: ANSI/ASME B36.10 steel pipe dimensions.