This reference is for engineers, designers, estimators, fabricators, and CAD drafters who need a quick check of 8 inch Schedule 10 pipe dimensions. It brings together the NPS, DN, outside diameter, wall thickness, inside diameter, and unit weight in one practical reference.
Use the dimensional data with related pipe dimension references, pipe schedule explanations, and fitting and flange references when developing piping layouts, material takeoffs, or fabrication documentation. The accompanying DWG resource can also support drafting workflows, subject to project review.
Schedule 10 pipe 8 inch (DN200) is a standard steel pipe size commonly used in piping design, fabrication, drafting, and estimation work. This page provides the standard dimensions, wall thickness, inside diameter, and weight per meter for NPS 8 Schedule 10 pipe based on ASME B36.10.
8 Inch Schedule 10 Pipe Dimensions
- Nominal Pipe Size (NPS): 8 inch
- Diameter Nominal (DN): DN200
- Outside Diameter (OD): 219.1 mm
- Wall Thickness: 3.76 mm
- Inside Diameter (ID): 211.58 mm
- Pipe Weight: 19.97 kg/m
- Pipe Weight Filled With Water: 55.11 kg/m
- Reference Standard: ASME B36.10
Schedule 10 Pipe 8 Inch Data Table
| Pipe Size | DN | OD (mm) | Wall Thickness (mm) | ID (mm) | Weight (kg/m) |
|---|---|---|---|---|---|
| 8 inch | 200 | 219.1 | 3.76 | 211.58 | 19.97 |
What Does Schedule 10 Mean?
Schedule 10 refers to the wall thickness series of the pipe. For the same nominal pipe size, the outside diameter remains fixed while the wall thickness changes depending on the schedule. A thicker wall generally increases pipe weight and reduces the inside diameter.
Typical Uses of 8 Inch Schedule 10 Pipe
NPS 8 Schedule 10 pipe is commonly used in water transfer lines, utility systems, low-pressure process piping, drainage applications, and general fabrication work where a lighter wall thickness is suitable. It is also a practical reference size for material takeoff, support planning, and piping layout.
Why Pipe Weight Matters
Pipe weight per meter is important for transport planning, support design, structural loading, fabrication estimates, and lifting calculations. Even in medium-size piping systems, installed weight can affect support spacing, handling methods, and project cost.
8 Inch Schedule 10 Pipe Calculation Notes
The listed weight is based on standard steel pipe dimension data using the outside diameter and wall thickness of the pipe. Actual product weight may vary slightly depending on manufacturing tolerance, material grade, and supplier standard.
Frequently Asked Questions
What is the outside diameter of 8 inch Schedule 10 pipe?
The outside diameter is 219.1 mm.
What is the wall thickness of DN200 Schedule 10 pipe?
The wall thickness is 3.76 mm.
What is the inside diameter of NPS 8 Schedule 10 pipe?
The inside diameter is 211.58 mm.
How much does 8 inch Schedule 10 pipe weigh?
The approximate weight is 19.97 kg/m.
Which standard covers this pipe size?
This dimension data is based on ASME B36.10 for welded and seamless wrought steel pipe.
Conclusion
Schedule 10 pipe 8 inch (DN200) has an outside diameter of 219.1 mm, wall thickness of 3.76 mm, inside diameter of 211.58 mm, and a weight of 19.97 kg/m. It is a useful reference for piping design, drafting, estimating, and fabrication work.
How to Read This 8 Inch Schedule 10 Pipe Reference
The pipe size is identified in two common ways: NPS 8 is the inch-based designation, while DN200 is the metric nominal designation. These labels identify the nominal size; they are not direct measurements of the pipe’s outside or inside diameter.
For layout and connection work, the outside diameter is especially important because fittings, clamps, supports, and other components must interface with the pipe exterior. The inside diameter is useful when considering flow area, internal clearance, lining effects, or hydraulic calculations. The wall thickness connects these two dimensions and is also relevant to fabrication review and corrosion allowance checks.
Schedule, weight, and design review
Schedule 10 identifies a wall-thickness series for the nominal pipe size. It should not be treated as a complete pressure-rating designation. Pressure and temperature suitability depend on factors such as material specification, design code, joint construction, corrosion or erosion allowance, manufacturing requirements, and service conditions.
The listed pipe weight is useful for estimating, transport, support planning, and handling. The water-filled value represents a different loading condition from the pipe’s empty weight. Engineers should confirm whether insulation, lining, contents, valves, fittings, supports, and other attached items also need to be included in the installed-load assessment.
Using the data in drawings and takeoffs
When preparing a piping drawing or material takeoff, keep nominal size, outside diameter, schedule, material specification, and end connection information distinct. This prevents a nominal designation from being mistaken for a fabrication dimension. For a broader comparison, link this page to the site’s pipe weight calculation guidance and piping terminology reference.
Additional Questions About 8 Inch Schedule 10 Pipe
Is NPS 8 the same as DN200?
They are the inch-based and metric nominal designations used to identify the same nominal pipe size in this reference. Neither designation should be interpreted as the measured inside diameter.
Does Schedule 10 determine the pipe pressure rating?
No. Schedule identifies a wall-thickness series, but pressure and temperature suitability require a separate engineering review using the applicable material, design code, service conditions, joining method, and allowances.
Why are both empty and water-filled weights useful?
Empty weight supports material, transport, and handling estimates. Water-filled weight helps identify a service or operating load condition. Actual installed loading may also include insulation, fittings, valves, supports, and other contents.
Can the listed dimensions be used for fabrication without checking the project documents?
They are useful reference data, but fabrication should be based on the approved project specification, applicable code requirements, procurement documents, connection details, and verified supplier information.
What should be checked before selecting this pipe for a piping system?
Review the service fluid, design pressure and temperature, material compatibility, corrosion allowance, joining requirements, support arrangement, applicable code, and project specifications. Final selection should be verified by the responsible engineer.