Schedule 80S Pipe 20 Inch (DN500) is a stainless steel pipe size commonly used in industrial piping systems where corrosion resistance, dimensional consistency, and reliable wall thickness are important. Based on the current page data under ANSI/ASME B36.19, this pipe size has an outside diameter of 508 mm, an inside diameter of 482.6 mm, a wall thickness of 12.7 mm, and a pipe weight of 155.13 kg/m.
20 Inch Schedule 80S Pipe Dimensions
The following values are listed for NPS 20 Schedule 80S pipe, which corresponds to DN500 in metric designation.
- Pipe Size: NPS 20 Inch
- DN Size: DN500
- Outside Diameter (OD): 508 mm
- Inside Diameter (ID): 482.6 mm
- Wall Thickness: 12.7 mm
- Pipe Weight: 155.13 kg/m
- Pipe Weight Including Water: 337.95 kg/m
- Reference Standard: ANSI/ASME B36.19
Schedule 80S Pipe 20 Inch (DN500) Data Table
| Pipe Schedule | NPS | DN | OD (mm) | ID (mm) | Wall Thickness (mm) | Weight (kg/m) |
|---|---|---|---|---|---|---|
| 80S | 20 Inch | 500 | 508 | 482.6 | 12.7 | 155.13 |
What Is Schedule 80S Pipe?
Schedule 80S is a stainless steel pipe schedule designation commonly used under ASME B36.19. In piping design and fabrication, the schedule identifies the wall thickness series for a given nominal pipe size. This helps engineers, buyers, and fabricators confirm dimensional compatibility, estimate pipe weight, and coordinate with fittings, flanges, and support systems.
Common Uses of 20 Inch Schedule 80S Pipe
20 inch Schedule 80S pipe is commonly used in stainless steel piping systems that require good corrosion resistance, dependable wall thickness, and large flow capacity. This size is often selected in industrial projects where standard dimensions are needed for design, fabrication, procurement, and installation work.
- Process piping systems in chemical and industrial plants
- Water transmission lines for medium to large flow service
- Cooling water and utility piping in plant facilities
- Marine and offshore piping where stainless steel is preferred
- Food and beverage plants requiring corrosion-resistant piping materials
- Pharmaceutical facilities using stainless steel process lines
- Pump suction and discharge piping for larger piping systems
- Pipeline upgrade and replacement work where standard pipe dimensions are required
In practical engineering work, this pipe size may be checked when reviewing flow area, piping layout, support loading, transport weight, and installation requirements. Final pipe selection should always be verified against project pressure, temperature, fluid type, and material specifications.
Why OD, ID, Thickness, and Weight Matter
Exact OD, ID, wall thickness, and weight values are important for pipe support design, material take-off, transport planning, welding preparation, and installation work. Weight data is also useful for lifting calculations and total piping load estimates, while inside diameter affects flow calculations and system capacity review.
NPS 20 and DN500 Explained
NPS means nominal pipe size in inch units, while DN means diameter nominal in metric units. The current page identifies this pipe as NPS 20 and DN500, which is the standard naming format widely used in piping drawings, isometrics, and procurement specifications.
Conclusion
Schedule 80S Pipe 20 Inch (DN500) is listed on the current page with 508 mm OD, 482.6 mm ID, 12.7 mm wall thickness, and 155.13 kg/m weight. It is a useful stainless steel pipe reference for piping engineers, designers, and buyers who need standard dimensional and weight data for project planning and material selection.