This reference page brings together the dimensional, weight, and terminology information needed to review Schedule STD Pipe 16 Inch (DN400). Use the data table for quick checks during specification, drafting, estimating, and material take-off work, then confirm the project requirements before procurement or fabrication.
The page is also useful when coordinating this pipe size with pipe fittings, flanges, valves, supports, and CAD drawings. The nominal size identifies the standard pipe designation; the listed outside diameter, inside diameter, wall thickness, and weight provide the practical values needed for coordination.
Schedule STD Pipe 16 Inch (DN400) is a steel pipe size commonly used in industrial and utility piping systems where standard dimensions, structural reliability, and dependable flow capacity are important. Based on the current page data under ANSI/ASME B36.10, this pipe size has an outside diameter of 406.4 mm, an inside diameter of 387.34 mm, a wall thickness of 9.53 mm, and a pipe weight of 93.27 kg/m.
16 Inch Schedule STD Pipe Dimensions
The following values are listed for NPS 16 Schedule STD pipe, which corresponds to DN400 in metric designation.
- Pipe Size: NPS 16 Inch
- DN Size: DN400
- Outside Diameter (OD): 406.4 mm
- Inside Diameter (ID): 387.34 mm
- Wall Thickness: 9.53 mm
- Pipe Weight: 93.27 kg/m
- Pipe Weight Including Water: 211.04 kg/m
- Reference Standard: ANSI/ASME B36.10
Schedule STD Pipe 16 Inch (DN400) Data Table
| Pipe Schedule | NPS | DN | OD (mm) | ID (mm) | Wall Thickness (mm) | Weight (kg/m) |
|---|---|---|---|---|---|---|
| STD | 16 Inch | 400 | 406.4 | 387.34 | 9.53 | 93.27 |
What Is Schedule STD Pipe?
Schedule STD means Standard Weight in the IPS pipe system and is commonly referenced for carbon steel and steel pipe dimensions under ASME B36.10. In practical piping work, Schedule STD is used as a standard wall thickness designation for many nominal pipe sizes. It helps engineers, fabricators, and buyers confirm dimensional compatibility, estimate weight, and coordinate with fittings, flanges, supports, and structural loads.
Common Uses of 16 Inch Schedule STD Pipe
16 inch Schedule STD pipe is commonly used in industrial and utility piping systems where good flow capacity and standard steel pipe dimensions are required. This size is often selected for water, cooling, transmission, and plant services where reliable dimensional data is important for design, fabrication, and construction.
- Water transmission lines for plant and utility service
- Cooling water systems in industrial facilities
- Stormwater and drainage piping in infrastructure projects
- Industrial utility piping for bulk fluid transport
- Pipeline headers and manifolds in process plants
- Pump suction and discharge lines where larger diameter piping is needed
- Municipal and public works projects requiring steel pipe sizes
- Replacement and upgrade projects where standard pipe dimensions are required
In practical engineering work, this pipe size may be reviewed when checking flow capacity, support loading, transport weight, handling requirements, and installation planning. Final pipe selection should always be verified against project pressure, temperature, fluid type, corrosion allowance, and material specifications.
Why OD, ID, Thickness, and Weight Matter
Exact OD, ID, wall thickness, and weight values are important for support design, material take-off, transport planning, lifting studies, welding preparation, and installation work. For a pipe as large as 16 inch DN400, accurate weight data is useful for crane selection, support design, and logistics planning. Inside diameter is also important for flow calculations and hydraulic capacity review.
NPS 16 and DN400 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 16 and DN400, which is the standard naming format widely used in piping drawings, specifications, and procurement documents.
Conclusion
Schedule STD Pipe 16 Inch (DN400) is listed on the current page with 406.4 mm OD, 387.34 mm ID, 9.53 mm wall thickness, and 93.27 kg/m weight. It is a useful steel pipe reference for engineers, designers, and buyers who need standard dimensional and weight data for piping systems and project coordination.
How to Use This 16 Inch DN400 Pipe Reference
Start with the schedule and nominal designations to confirm that the selected item matches the piping specification. Then compare the listed outside diameter with the connection, fitting, flange, and support details used elsewhere in the system. The inside diameter is the relevant dimensional reference for flow-area and hydraulic review, while wall thickness and weight support fabrication, handling, and load assessments.
Dimensional compatibility
Pipe schedule information should be reviewed together with the applicable fitting and flange dimensions. Matching nominal designations alone is not a substitute for checking actual connection dimensions, end preparation, material requirements, and the project specification. This is especially important when combining components from different drawings, suppliers, or piping classes.
Weight and installation planning
The listed pipe weight can support preliminary material take-offs, transport planning, lifting reviews, and pipe-support coordination. A complete installation assessment may also need to consider the contents of the pipe, insulation, valves, fittings, temporary handling conditions, and support spacing. Those factors must be evaluated separately for the project.
Schedule does not establish the complete design basis
Schedule STD identifies a standard wall-thickness designation; it does not, by itself, establish allowable pressure, temperature limits, corrosion performance, material grade, joining requirements, or code compliance for a particular service. Verify those requirements against the piping class, fluid service, operating conditions, material specification, and responsible engineer’s design documents.
Useful related references
For broader drafting and design work, this page can be used alongside references for pipe schedules, NPS and DN conversion, steel pipe dimensions, pipe fittings, flange dimensions, and pipe support terminology. The available DWG resource can also help users coordinate the dimensional reference with CAD layouts, subject to project-specific drawing standards.
Frequently Asked Questions
What does Schedule STD mean?
Schedule STD means Standard Weight in the IPS pipe system. It is used as a standard wall-thickness designation and helps users coordinate pipe dimensions, fittings, flanges, supports, and procurement information.
What are the NPS and DN designations for this pipe?
The page identifies the pipe as NPS 16 and DN400. NPS is the nominal pipe size designation in inch units, while DN is the diameter nominal designation used in metric contexts.
Which dimensions are provided for the pipe?
The reference provides the outside diameter, inside diameter, wall thickness, pipe weight, and pipe weight including water, along with the applicable pipe-size designations and reference standard.
Can the listed weight be used for support design?
The listed weight is useful for preliminary support, handling, transport, and material-planning reviews. Final support design should also account for contents, fittings, valves, insulation, operating conditions, and the applicable project requirements.
Does Schedule STD alone confirm pressure suitability?
No. Schedule STD is a dimensional designation and does not by itself confirm pressure or temperature suitability. Selection must be checked against the material specification, fluid service, operating conditions, corrosion requirements, and governing design documents.