Use this reference to identify the standard dimensional and weight data for Schedule 30 Pipe 8 Inch (DN200). The page is organized for engineers, drafters, estimators, fabricators, and CAD users who need a quick pipe-size check during layout, detailing, and material planning.
Review the outside diameter for routing and clearance work, the inside diameter for flow-related reference, and the weight data for preliminary support, handling, and estimation reviews. Always coordinate final design decisions with the project specifications, material requirements, and applicable engineering checks.
Schedule 30 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 30 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, transport review, and fabrication coordination during project development.
8 Inch Schedule 30 Pipe Dimensions
- Nominal Pipe Size (NPS): 8 inch
- Diameter Nominal (DN): DN200
- Outside Diameter (OD): 219.1 mm
- Wall Thickness: 7.04 mm
- Inside Diameter (ID): 205.02 mm
- Pipe Weight: 36.82 kg/m
- Pipe Weight Including Water: 69.81 kg/m
- Standard: ASME B36.10
Schedule 30 Pipe 8 Inch Data Table
| NPS | DN | Outside Diameter (OD) | Wall Thickness | Inside Diameter (ID) | Weight |
|---|---|---|---|---|---|
| 8 inch | DN200 | 219.1 mm | 7.04 mm | 205.02 mm | 36.82 kg/m |
Understanding 8 Inch Schedule 30 Pipe
8 inch Schedule 30 pipe is a standard steel pipe size used as a reference in industrial piping layouts, utility systems, water transmission lines, process design studies, and CAD drafting. With an outside diameter of 219.1 mm and a wall thickness of 7.04 mm, this pipe size is suitable for medium-flow applications where designers need a balance between flow capacity and pipe wall strength.
What Does Schedule 30 Mean?
Schedule 30 refers to the wall thickness series of the pipe. For NPS 8, Schedule 30 gives a wall thickness of 7.04 mm. The schedule affects the inside diameter, total pipe weight, fabrication planning, and compatibility with supports, fittings, and structural loading requirements.
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 36.82 kg/m helps with transport estimates, lifting plans, and support loading. If the pipe is filled with water, the total weight increases to 69.81 kg/m, which is useful for operating load calculations and support checks.
Common Uses of DN200 Schedule 30 Pipe
DN200 Schedule 30 pipe may be referenced in industrial utility systems, water transfer lines, plant layout studies, process piping documentation, and engineering design work. It is also useful for piping designers, CAD users, estimators, and procurement teams who need standard steel pipe dimensions for piping systems.
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 30 Pipe 8 Inch
- Pipe Size: 8 inch
- DN: DN200
- OD: 219.1 mm
- ID: 205.02 mm
- Wall Thickness: 7.04 mm
- Weight: 36.82 kg/m
- Weight Including Water: 69.81 kg/m
- Reference Standard: ASME B36.10
Related Pipe Size Pages
Conclusion
Schedule 30 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, 7.04 mm wall thickness, and 36.82 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.
How to Read the Schedule 30 Pipe Data
The pipe dimensions serve different purposes in design and drafting. The outside diameter is commonly used when checking physical clearances, sleeves, clamps, supports, insulation space, and connections to adjacent equipment. The inside diameter provides a dimensional reference for the available internal passage and can support preliminary flow-area or hydraulic reviews.
Schedule 30 identifies a wall-thickness series for the nominal pipe size; it is not, by itself, a complete design pressure or material specification. Pressure capability and service suitability also depend on factors such as material grade, temperature, corrosion allowance, joining method, code requirements, and project design conditions.
Using the Weight Information
The listed pipe weight can support preliminary material takeoffs, handling reviews, transport planning, and pipe-support load assessments. The water-filled value is useful when considering an operating condition in which the pipe contains water. For a complete support or structural review, also account for fittings, valves, flanges, insulation, contents, support spacing, and other attached components where applicable.
Drafting and CAD Considerations
For CAD work, use the listed outside diameter and wall thickness to represent the pipe envelope and internal opening. Confirm how the project template, piping specification, fittings, flanges, and connection details represent nominal pipe sizes. The downloadable DWG reference can help with preliminary layout and drafting, but fabrication drawings should be checked against the approved project documents and applicable component specifications.
Before Selecting or Specifying the Pipe
- Confirm that the nominal size matches the connected piping components.
- Check the required material and manufacturing specification separately from the schedule designation.
- Verify design conditions, code requirements, corrosion allowance, and joining details.
- Use the project-approved dimensions and weights for final procurement, fabrication, and structural calculations.
Frequently Asked Questions
What is Schedule 30 Pipe 8 Inch?
It is the NPS 8 pipe size identified with the Schedule 30 wall-thickness series. On this page, the same nominal size is also identified as DN200.
Are NPS 8 and DN200 the same designation?
They are different nominal sizing systems that refer to the same pipe size category in this reference. The actual dimensional values should be taken from the applicable pipe data rather than inferred from the nominal name alone.
What is the difference between outside diameter and inside diameter?
Outside diameter describes the external pipe envelope used for routing and clearance checks. Inside diameter describes the internal opening and is useful for flow-related reference and internal-area reviews.
Does Schedule 30 define the pipe material?
No. The schedule identifies a wall-thickness series for a nominal pipe size. Material grade, manufacturing requirements, service conditions, and design-code requirements must be specified separately.
Can the listed weight be used for final support design?
The listed weight is useful for preliminary review, estimation, and planning. Final support and structural calculations should also include the operating contents, fittings, valves, insulation, attachments, support arrangement, and project-specific requirements.
Is a CAD file available for this pipe size?
A DWG download is provided with this reference. Check the downloaded geometry against the approved piping specification and fabrication requirements before using it for issued-for-construction documentation.