Schedule 20 pipe 8 inch (DN200) is a standard steel pipe size commonly used in piping design, drafting, fabrication, estimation, and industrial layout work. This page provides the standard dimensions, wall thickness, inside diameter, and weight per meter for NPS 8 Schedule 20 pipe based on ASME B36.10.
For engineers, designers, estimators, and CAD users, quick access to accurate pipe data helps improve piping layout, support planning, weight checks, material takeoff, and fabrication coordination during project development.
8 Inch Schedule 20 Pipe Dimensions
- Nominal Pipe Size (NPS): 8 inch
- Diameter Nominal (DN): DN200
- Outside Diameter (OD): 219.1 mm
- Wall Thickness: 6.35 mm
- Inside Diameter (ID): 206.4 mm
- Pipe Weight: 33.32 kg/m
- Pipe Weight Including Water: 66.76 kg/m
- Standard: ASME B36.10
Schedule 20 Pipe 8 Inch Data Table
| NPS | DN | Outside Diameter (OD) | Wall Thickness | Inside Diameter (ID) | Weight |
|---|---|---|---|---|---|
| 8 inch | DN200 | 219.1 mm | 6.35 mm | 206.4 mm | 33.32 kg/m |
Understanding 8 Inch Schedule 20 Pipe
8 inch Schedule 20 pipe is a standard steel pipe size used as a reference in industrial piping layouts, utility lines, water systems, process design studies, and CAD drafting. With an outside diameter of 219.1 mm and a wall thickness of 6.35 mm, this pipe size is useful where a practical flow path is needed while keeping the wall lighter than heavier schedules.
What Does Schedule 20 Mean?
Schedule 20 refers to the wall thickness series of the pipe. For NPS 8, Schedule 20 gives a wall thickness of 6.35 mm. The schedule affects the inside diameter, pipe weight, fabrication requirements, and dimensional coordination with fittings, supports, and layout clearances.
Why These Pipe Dimensions Matter
Accurate pipe dimension data is important for piping layouts, spool drawings, support design, structural load review, and material takeoff. Knowing that this pipe weighs 33.32 kg/m helps with transport estimates, lifting plans, and support loading. If the pipe is filled with water, the total weight increases to 66.76 kg/m, which is also useful for operating load calculations.
Common Uses of DN200 Schedule 20 Pipe
DN200 Schedule 20 pipe may be referenced in industrial utility systems, water transfer lines, plant layout studies, process piping documentation, and engineering design work. It is also commonly used by piping designers, CAD users, estimators, and procurement teams who need fast access to standard steel pipe dimensions.
Difference Between NPS 8 and DN200
NPS 8 is the inch-based nominal pipe size designation, while DN200 is the metric nominal diameter reference. Both refer to the same pipe size category on this page. The actual standard outside diameter for this size is 219.1 mm.
How to Use This Data
You can use this page to quickly check:
- pipe outside diameter for layout and clearance
- inside diameter for flow reference
- wall thickness for schedule comparison
- weight per meter for estimation and transport planning
- water-filled weight for support and structural load review
Quick Reference for Schedule 20 Pipe 8 Inch
- Pipe Size: 8 inch
- DN: DN200
- OD: 219.1 mm
- ID: 206.4 mm
- Wall Thickness: 6.35 mm
- Weight: 33.32 kg/m
- Weight Including Water: 66.76 kg/m
- Reference Standard: ASME B36.10
Related Pipe Size Pages
Conclusion
Schedule 20 Pipe 8 Inch (DN200) is an important steel pipe reference for piping design, drafting, estimation, and fabrication work. With its 219.1 mm outside diameter, 6.35 mm wall thickness, and 33.32 kg/m pipe weight, it provides useful dimensional data for engineers and designers who need fast and accurate pipe information.
Note: NPS = Nominal Pipe Size, DN = Diameter Nominal. Dimensions and weights shown here are based on ASME B36.10 steel pipe data.