This reference page brings together the key dimensional and weight information for 8 inch Schedule 160 pipe, also identified as NPS 8 and DN200. Use the data when checking piping layouts, preparing fabrication documents, estimating material quantities, or coordinating heavy-wall pipe with fittings and supports.
For broader comparisons, pair this page with the site’s pipe schedule chart, NPS and DN reference, and related steel pipe dimensions resources. Those references help distinguish nominal size from actual outside diameter and clarify how different schedule designations affect the available flow area and pipe mass.
Schedule 160 pipe 8 inch (DN200) is an extra heavy-wall steel pipe size commonly used in piping design, fabrication, drafting, and engineering estimation work. This page provides the standard dimensions, wall thickness, inside diameter, and weight per meter for NPS 8 Schedule 160 pipe based on ASME B36.10.
8 Inch Schedule 160 Pipe Dimensions
- Nominal Pipe Size (NPS): 8 inch
- Diameter Nominal (DN): DN200
- Outside Diameter (OD): 219.1 mm
- Wall Thickness: 23.01 mm
- Inside Diameter (ID): 173.08 mm
- Pipe Weight: 111.27 kg/m
- Pipe Weight Filled With Water: 134.78 kg/m
- Reference Standard: ASME B36.10
- Pipe Type: Steel Pipe
Schedule 160 Pipe 8 Inch Data Table
| Pipe Size | DN | OD (mm) | Wall Thickness (mm) | ID (mm) | Weight (kg/m) |
|---|---|---|---|---|---|
| 8 inch | 200 | 219.1 | 23.01 | 173.08 | 111.27 |
What Does Schedule 160 Mean?
Schedule 160 refers to an extra heavy wall thickness series used for steel pipe under ASME B36.10. For the same nominal pipe size, the outside diameter remains fixed while the wall thickness increases according to the schedule. A much thicker wall reduces the inside diameter and significantly increases pipe weight.
Typical Uses of 8 Inch Schedule 160 Pipe
NPS 8 Schedule 160 pipe is commonly referenced for very heavy-duty industrial piping systems where extremely high wall thickness is required. It may be used in process piping, plant utility systems, structural loading checks, fabrication work, and engineering applications where pipe strength and wall thickness are more critical than maximum flow area.
Why Pipe Weight Matters
Pipe weight per meter is essential for transport planning, crane lifting studies, support design, structural loading, fabrication estimates, and installation planning. For an 8 inch Schedule 160 pipe, the extra heavy wall thickness results in much higher installed weight than lighter schedules, so accurate weight data is important for engineering and construction work.
8 Inch Schedule 160 Pipe Calculation Notes
The listed weight is based on standard steel pipe dimensions using the outside diameter and wall thickness of the pipe. Actual product weight may vary slightly depending on manufacturing tolerance, material specification, and supplier standard.
Frequently Asked Questions
What is the outside diameter of 8 inch Schedule 160 pipe?
The outside diameter is 219.1 mm.
What is the wall thickness of DN200 Schedule 160 pipe?
The wall thickness is 23.01 mm.
What is the inside diameter of NPS 8 Schedule 160 pipe?
The inside diameter is 173.08 mm.
How much does 8 inch Schedule 160 pipe weigh?
The approximate weight is 111.27 kg/m.
Which standard covers this pipe size?
This dimension data is based on ASME B36.10 for steel pipe.
Conclusion
Schedule 160 pipe 8 inch (DN200) has an outside diameter of 219.1 mm, wall thickness of 23.01 mm, inside diameter of 173.08 mm, and a weight of 111.27 kg/m. It is a useful reference for piping design, fabrication, estimating, and heavy-duty industrial engineering work.
How to Use This 8 Inch Schedule 160 Reference
The dimensions in the source data are most useful when several design tasks need to remain consistent. The outside diameter supports layout and connection checks, while wall thickness and inside diameter are relevant to clearance, bore, flow-area, and fabrication reviews. The listed mass per meter can be carried into material takeoffs, support-load discussions, shipping plans, and lifting studies.
Schedule, nominal size, and actual dimensions
Schedule 160 identifies a heavy-wall pipe series; it is not a direct pressure rating. Pressure capability depends on the complete design basis, including the material specification, temperature, joining method, applicable code requirements, corrosion allowance, and manufacturer documentation. Use the schedule designation together with the project piping specification rather than treating it as a standalone design qualification.
Coordination with fittings, flanges, and drawings
When this pipe is connected to fittings or flanges, verify that the mating components and end preparation match the project requirements. The nominal size helps identify the connection family, but actual geometry still matters during drafting and fabrication. The downloadable DWG reference can support layout work; it should be checked against the project’s approved drawings, material specification, and fabrication requirements before release.
Empty and water-filled weight context
The page reports both pipe weight and pipe weight when filled with water. The second figure represents an operating or test-condition consideration in which the internal contents contribute to the supported load. For support and structural checks, also consider the design condition, insulation, coatings, valves, fittings, local attachments, and other sustained loads that apply to the installation.
Additional Questions About 8 Inch Schedule 160 Pipe
Is Schedule 160 the same as a pressure class?
No. Schedule identifies a pipe wall series. It should not be used by itself as a pressure class or as proof that a pipe is acceptable for a particular service. Confirm the complete design and material requirements with the responsible engineer and project specification.
Why does the inside diameter matter?
The inside diameter affects available flow area, internal clearance, fluid velocity calculations, and compatibility with components that enter or connect to the pipe bore. Use the listed inside diameter for reference, while allowing for tolerances, lining, corrosion allowance, and the actual supplied product where applicable.
Should the pipe weight be used directly for support design?
The listed weight is a useful reference for estimating and preliminary load discussions. Final support design should account for the applicable operating, test, installation, and attachment loads, along with the verified material and supplier documentation.
Can the DWG file be used as an approved fabrication drawing?
The DWG is a reference resource for drafting and coordination. It does not replace approved project drawings, dimensional verification, weld details, material requirements, or fabrication procedures.