This reference page explains the dimensional data for Schedule 80 pipe 3/8 inch (DN10) and shows how the listed values support piping design, fabrication, estimating, and drafting work. Use the table for the authoritative local dimensions, then review the guidance below before matching the pipe with fittings, flanges, supports, or a project specification.
For related planning work, readers may also want to consult the site’s pipe schedule reference, NPS and DN terminology guide, and pipe fittings and flange resources. These related topics help distinguish nominal identification from the physical dimensions needed for fit-up and layout.
Schedule 80 Pipe 3/8 Inch (DN10) 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 used in process piping, utility systems, water treatment plants, and mechanical services. For this size, the standard data shows an outside diameter of 17.1 mm, an inside diameter of 10.7 mm, a wall thickness of 3.2 mm, and a pipe weight of 1.1 kg/m.
Schedule 80 Pipe 3/8 Inch (DN10) Dimensions
- Pipe Standard: ANSI/ASME B36.10
- Nominal Pipe Size: 3/8 inch
- DN Size: DN10
- Outside Diameter (OD): 17.1 mm
- Inside Diameter (ID): 10.7 mm
- Wall Thickness: 3.2 mm
- Pipe Weight: 1.1 kg/m
- Pipe Weight Including Water: 1.18 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 3/8 Inch DN10 Pipe Dimensions Matter
Knowing the exact dimensions of a 3/8 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 3/8 Inch (DN10)
This pipe size is often used in industrial and commercial piping 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
3/8 Inch Schedule 80 Pipe Data Table
| NPS | DN | OD (mm) | ID (mm) | Wall Thickness (mm) | Weight (kg/m) |
|---|---|---|---|---|---|
| 3/8 inch | 10 | 17.1 | 10.7 | 3.2 | 1.1 |
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.
How to Read This Schedule 80 Pipe Data
The listed outside diameter is the primary reference for external fit-up. It should be checked when selecting clamps, supports, sleeves, fittings, and connection components. The inside diameter describes the available flow passage, so it is relevant to hydraulic review and system capacity rather than only to visual identification.
Wall thickness is the defining dimensional feature of this schedule entry. Compared with a lighter schedule for the same nominal pipe size, Schedule 80 provides a thicker wall and correspondingly less internal passage. That relationship can affect clearances, flow review, fabrication details, and the way connected components are selected.
Practical Checks Before Ordering or Modeling
- Confirm that the nominal designation and DN identification match the project’s piping class and material list.
- Use the outside diameter when checking connection compatibility, support geometry, and clearance around the pipe.
- Use the inside diameter when reviewing flow assumptions, instrumentation connections, and internal access requirements.
- Distinguish the listed pipe weight from the value that includes water when preparing handling or support information.
- Verify material grade, end preparation, corrosion allowance, design pressure, temperature, and governing project code before procurement.
- Open the supplied DWG with compatible CAD software and check the drawing units, insertion settings, and project drafting conventions before using it in a design package.
Why the DWG Reference Is Useful
The downloadable DWG can support preliminary layouts, detail development, and coordination with fittings or equipment. A CAD file is a drafting aid, not a substitute for checking the applicable pipe specification, connection standard, tolerances, or project requirements. For broader drafting work, link this page to the site’s CAD/DWG pipe resources and related flange and fitting dimension references.
Frequently Asked Questions
What does Schedule 80 mean for this pipe?
Schedule 80 identifies a pipe wall-thickness classification. For the same nominal size, it generally has a thicker wall and a smaller internal passage than a lighter schedule. The schedule alone does not define every material, pressure, temperature, or corrosion requirement.
Is 3/8 inch the actual outside diameter?
No. The 3/8 inch designation is the nominal pipe size. The actual outside diameter is the separate dimensional value listed in the source table and should be used for fit-up, supports, and layout checks.
What is the difference between NPS and DN?
NPS is the nominal pipe size expressed using an inch-based designation, while DN is the corresponding nominal designation used in metric terminology. Neither label should be treated as a direct measurement of the pipe’s outside or inside diameter.
Which pipe weight should be used for support planning?
Use the listed dry pipe weight for the pipe itself and the separate water-included value when the design condition requires consideration of water in the pipe. Confirm the project loading basis before sizing supports or planning lifts.
Does Schedule 80 establish the allowable operating pressure?
No. Schedule identifies a dimensional wall category. Allowable service conditions also depend on material, temperature, design code, joining method, corrosion allowance, and the approved engineering specification.
Can the DWG be used directly for fabrication?
The DWG is a reference resource for drafting and coordination. Before fabrication, verify dimensions, units, connection details, material requirements, tolerances, and the latest approved project documents.