Schedule 80 Pipe 16 Inch (DN400) is a heavy wall steel pipe commonly used in industrial piping systems that require higher strength and thicker pipe walls than lighter schedules. This pipe size is based on ANSI/ASME B36.10 and is widely referenced in process piping, utility systems, water treatment plants, and mechanical applications. For this size, the standard data shows an outside diameter of 406.4 mm, an inside diameter of 363.52 mm, a wall thickness of 21.44 mm, and a pipe weight of 203.54 kg/m.
Schedule 80 Pipe 16 Inch (DN400) Dimensions
- Pipe Standard: ANSI/ASME B36.10
- Nominal Pipe Size: 16 inch
- DN Size: DN400
- Outside Diameter (OD): 406.4 mm
- Inside Diameter (ID): 363.52 mm
- Wall Thickness: 21.44 mm
- Pipe Weight: 203.54 kg/m
- Pipe Weight Including Water: 307.27 kg/m
What Is Schedule 80 Pipe?
Schedule 80 refers to a pipe wall thickness classification. For the same nominal pipe size, a Schedule 80 pipe has a thicker wall and a smaller inside diameter than lower schedule pipes. This makes it a practical choice for systems that need additional pipe strength, durability, and long-term service performance.
Why 16 Inch DN400 Pipe Dimensions Matter
Knowing the exact dimensions of a 16 inch Schedule 80 pipe is important for piping design, fabrication, and installation. The outside diameter helps with flange matching, clamps, and supports. The inside diameter affects flow area and system capacity. The wall thickness is important for strength and service conditions, while the pipe weight per meter is useful for transport, lifting plans, and structural support calculations.
Common Uses of Schedule 80 Pipe 16 Inch (DN400)
This pipe size is often used in larger industrial and commercial systems such as:
- Water treatment and utility piping
- Process and plant piping systems
- Oil and gas applications
- Pump stations and mechanical services
- Heavy-duty industrial pipe networks
16 Inch Schedule 80 Pipe Data Table
| NPS | DN | OD (mm) | ID (mm) | Wall Thickness (mm) | Weight (kg/m) |
|---|---|---|---|---|---|
| 16 inch | 400 | 406.4 | 363.52 | 21.44 | 203.54 |
Additional Information for Engineers and Buyers
Before selecting this pipe size, it is also important to review the material grade, end type, design pressure, corrosion allowance, operating temperature, and project code requirements. While Schedule 80 defines the dimensional wall category, the final pipe selection should always match the actual service condition and engineering specification.
Note: NPS means nominal pipe size in inches, while DN means diameter nominal in millimeters. These are standard reference sizes used for pipe identification.