This reference provides the dimensional data for Schedule 60 Pipe 16 Inch (DN400), including outside diameter, inside diameter, wall thickness, and listed weight. Use the table to support piping layout, preliminary material takeoffs, fabrication checks, and coordination with fittings, flanges, supports, and connected equipment.
Because nominal pipe designations do not directly state the measured outside or inside diameter, confirm the applicable dimensional values before preparing drawings, checking clearances, or selecting compatible components. The source data on this page remains the controlling reference for the listed dimensions and weights.
Schedule 60 Pipe 16 Inch (DN400 mm) is a carbon steel pipe size commonly used in heavy-duty piping systems where higher wall thickness and stronger mechanical performance are required. This pipe size is typically referenced under ANSI/ASME B36.10, which is the standard used for wrought steel pipe dimensions.
For this size, the pipe has an outside diameter (OD) of 406.4 mm, an inside diameter (ID) of 373.08 mm, and a wall thickness of 16.66 mm. The listed pipe weight is 160.13 kg/m, while the weight including water is 269.39 kg/m.
Schedule 60 Pipe 16 Inch (DN400 mm) Dimension Table
| Pipe Size | NPS | DN | Outside Diameter (OD) | Inside Diameter (ID) | Wall Thickness | Weight |
|---|---|---|---|---|---|---|
| Schedule 60 Pipe | 16 Inch | DN400 | 406.4 mm | 373.08 mm | 16.66 mm | 160.13 kg/m |
What Is Schedule 60 Pipe?
Schedule 60 pipe is a heavier wall steel pipe schedule used when a thicker pipe wall is needed compared with lighter schedules such as Schedule 40. In general, a thicker wall can provide improved strength, durability, and pressure-handling capability, depending on material grade, design temperature, and service conditions.
Pipe schedule selection should always be checked against project requirements such as design pressure, temperature, corrosion allowance, piping code, and fabrication method before final use.
16 Inch Schedule 60 Pipe Data
- Standard: ANSI/ASME B36.10
- Pipe Type: Steel Pipe
- NPS: 16 Inch
- DN: DN400
- OD: 406.4 mm
- ID: 373.08 mm
- Wall Thickness: 16.66 mm
- Pipe Weight: 160.13 kg/m
- Weight Including Water: 269.39 kg/m
Common Uses of 16 Inch Schedule 60 Pipe
16 inch Schedule 60 steel pipe may be used in applications where a large internal flow path and thicker wall construction are needed. Typical uses may include:
- Industrial process piping systems
- Water transmission and utility piping
- Oil and gas piping applications
- Power plant and heavy-duty piping systems
- Projects requiring higher wall thickness than lighter schedules
Why DN400 Pipe Dimensions Matter
Many users search for DN400 pipe dimensions to verify pipe routing, structural support loads, transportation limits, fabrication details, and compatibility with fittings or connected equipment. For a 16 inch pipe, accurate dimensional data is especially important because weight, lifting, and installation requirements can increase significantly.
Knowing the correct 16 inch Schedule 60 pipe dimensions also helps engineers, detailers, estimators, buyers, and students compare this pipe size with other schedules when reviewing wall thickness, internal flow area, and total pipe weight.
NPS 16 and DN400 Explained
NPS stands for Nominal Pipe Size in inches, while DN stands for Diameter Nominal in metric designation. For this pipe size:
- NPS 16 = inch-based nominal pipe size
- DN400 = metric nominal designation
Although DN is shown in metric form, the actual outside diameter should always be checked from the dimensional standard. For this size, the OD is 406.4 mm.
Reference for Schedule 60 Pipe 16 Inch
This page provides a quick dimensional reference for engineers, piping designers, students, fabricators, and procurement teams looking for Schedule 60 Pipe 16 Inch (DN400 mm) data in a clear format.
Reference Standard: ANSI/ASME B36.10 steel pipe dimensions.
How to Use This Schedule 60 Pipe Reference
The dimension table is useful when comparing this pipe with other schedules or coordinating a DN400 piping system. The outside diameter is important for routing space, clamp and support interfaces, insulation allowances, and connection coordination. The inside diameter is relevant to flow-path review and internal clearance checks, while the listed wall thickness helps identify the pipe’s heavier-wall construction.
Use the listed pipe weight when developing preliminary handling, support, shipping, and structural-load information. The separate weight including water value represents a different operating condition from the empty-pipe value. Final support and structural checks should account for the complete project configuration, including contents, insulation, valves, fittings, corrosion allowance, and applicable design requirements.
Coordination With Piping Components
For drafting and procurement, compare the stated OD and nominal designation with the dimensional information for mating pipe fittings, flanges, valves, and connected equipment. Nominal size labels help identify the intended piping size, but they should not replace a dimensional check when preparing fabrication drawings or reviewing interfaces.
The downloadable DWG can assist with CAD coordination and layout work. Treat CAD geometry as a drafting aid and verify dimensions against the authoritative table before issuing construction, fabrication, or procurement documents.
Design Review Notes
- Confirm the required pipe standard, material grade, and applicable piping code for the project.
- Check design pressure, temperature, corrosion allowance, fabrication method, and service conditions before selecting a schedule.
- Review the listed weight condition when evaluating supports, lifting, transportation, and installation.
- Verify connection details separately for fittings, flanges, valves, and equipment nozzles.
Frequently Asked Questions
What is the outside diameter of 16 inch Schedule 60 pipe?
The listed outside diameter is 406.4 mm.
What is the inside diameter of Schedule 60 Pipe 16 Inch?
The listed inside diameter is 373.08 mm.
What is the wall thickness?
The listed wall thickness is 16.66 mm.
How much does 16 inch Schedule 60 pipe weigh?
The listed pipe weight is 160.13 kg/m. The listed weight including water is 269.39 kg/m.
Is NPS 16 the same nominal size as DN400?
For this reference, NPS 16 and DN400 identify the same nominal pipe size designation. Always verify the actual OD from the dimensional data rather than treating the nominal designation as the measured diameter.
Does Schedule 60 automatically define the allowable pressure?
No. Schedule identifies a dimensional wall category, but pressure suitability also depends on material grade, design temperature, corrosion allowance, piping code, fabrication, and service conditions. Confirm the complete design basis before use.