This reference is intended for engineers, designers, fabricators, estimators, and procurement teams checking Schedule 5S Pipe 5 Inch (DN125 mm) dimensions. Use the dimensional table for the listed outside diameter, inside diameter, wall thickness, and pipe weight, then confirm project-specific material, joining, and design requirements before releasing drawings or purchasing data.
The accompanying DWG resource can support layout and drafting workflows. It should be coordinated with the applicable fitting, flange, valve, support, and equipment information used elsewhere in the piping system.
Schedule 5S Pipe 5 Inch (DN125 mm) is a stainless steel pipe size commonly used in industrial piping systems where corrosion resistance and lighter wall thickness are required. This pipe size is typically referenced under ANSI/ASME B36.19, which is the standard used for stainless steel pipe dimensions.
For this size, the pipe has an outside diameter (OD) of 141.3 mm, an inside diameter (ID) of 135.76 mm, and a wall thickness of 2.77 mm. The listed pipe weight is 9.46 kg/m, while the weight including water is 23.92 kg/m.
Schedule 5S Pipe 5 Inch (DN125 mm) Dimension Table
| Pipe Size | NPS | DN | Outside Diameter (OD) | Inside Diameter (ID) | Wall Thickness | Weight |
|---|---|---|---|---|---|---|
| Schedule 5S Pipe | 5 Inch | DN125 | 141.3 mm | 135.76 mm | 2.77 mm | 9.46 kg/m |
What Is Schedule 5S Pipe?
Schedule 5S is a thin-wall stainless steel pipe schedule listed in ASME B36.19. The āSā designation is commonly used for stainless steel pipe schedules. Compared with heavier schedules, Schedule 5S provides a lighter wall thickness and lower pipe weight, which can help reduce handling effort, support load, and fabrication requirements in suitable applications.
However, pipe schedule selection should always be reviewed against design pressure, temperature, corrosion allowance, project code, and service conditions before final use.
5 Inch Schedule 5S Pipe Data
- Standard: ANSI/ASME B36.19
- Pipe Type: Stainless Steel Pipe
- NPS: 5 Inch
- DN: DN125
- OD: 141.3 mm
- ID: 135.76 mm
- Wall Thickness: 2.77 mm
- Pipe Weight: 9.46 kg/m
- Weight Including Water: 23.92 kg/m
Common Uses of 5 Inch Schedule 5S Pipe
5 inch Schedule 5S stainless steel pipe may be used in applications where corrosion resistance, lighter wall thickness, and good flow capacity are needed. Typical uses may include:
- Water treatment and utility piping systems
- Industrial stainless steel process lines
- Low-pressure transfer piping
- Food and beverage production systems
- Chemical and general fabrication projects
Why DN125 Pipe Dimensions Matter
Many users search for DN125 pipe dimensions to verify piping layout, support spacing, fabrication requirements, transport limits, and compatibility with fittings or connected equipment. For this pipe size, accurate dimensions are important for spool coordination, structural checks, and installation planning.
Knowing the correct 5 inch Schedule 5S pipe dimensions also helps engineers, designers, estimators, buyers, and students compare this size with other schedules when reviewing wall thickness, internal flow area, and total pipe weight.
NPS 5 and DN125 Explained
NPS stands for Nominal Pipe Size in inches, while DN stands for Diameter Nominal in metric designation. For this pipe size:
- NPS 5 = inch-based nominal pipe size
- DN125 = 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 141.3 mm.
Reference for Schedule 5S Pipe 5 Inch
This page provides a quick dimensional reference for engineers, piping designers, students, fabricators, and procurement teams looking for Schedule 5S Pipe 5 Inch (DN125 mm) data in a clear format.
Reference Standard: ANSI/ASME B36.19 stainless steel pipe dimensions.
How to Use This Schedule 5S Pipe Reference
The outside diameter (OD) is the primary dimensional reference for coordinating the pipe envelope with fittings, clamps, supports, penetrations, and connected components. The listed inside diameter (ID) is useful when reviewing the available flow passage and checking transitions to adjacent piping components.
Wall thickness identifies the pipe section represented by this schedule. It is not, by itself, a pressure rating or a complete design qualification. Final selection requires review of the governing design code, pressure and temperature conditions, corrosion allowance, material specification, joining method, and service environment.
The table separates the pipe’s listed dry weight from the weight including water. That distinction matters when reviewing handling, temporary support, permanent support, lifting, and structural load cases. The water-inclusive figure should not be treated as a universal operating load for every fluid service.
Drafting and Procurement Checks
- Use the listed OD when coordinating the pipe with fittings, flanges, supports, and equipment connections.
- Use the listed ID and wall thickness when checking bore continuity and transitions between different pipe sections.
- Confirm that the specified stainless steel material grade, surface condition, and manufacturing requirements are defined separately from the dimensional schedule.
- Check whether the project requires additional allowances, inspection, testing, or corrosion and temperature evaluation.
- Coordinate the DWG with the project model and verify units, connection details, and revision status before fabrication.
Related Pipe Reference Topics
For broader design and drafting context, connect this page to related references covering stainless steel pipe schedules, NPS and DN designations, pipe fittings and flanges, pipe support planning, and pipe dimension DWG resources. These related topics help readers move from a single dimensional entry to complete piping-component coordination without confusing nominal size with actual geometry.
Frequently Asked Questions
What does Schedule 5S mean for this pipe?
Schedule 5S identifies a thin-wall stainless steel pipe schedule associated with the dimensional reference cited in the source content. The schedule describes the listed pipe wall section; it does not independently establish allowable pressure, temperature limits, or suitability for a particular service.
Are NPS 5 and DN125 the same designation?
NPS 5 is the inch-based nominal designation, while DN125 is the metric nominal designation shown for this pipe size. Because nominal designations do not replace dimensional verification, use the listed OD when coordinating components.
Why are both pipe weight and weight including water shown?
Pipe weight describes the listed pipe itself. Weight including water provides a separate reference for a water-filled condition, which can be useful during support and handling reviews. The appropriate design load depends on the actual service and project load cases.
Can this dimensional data be used as a pressure rating?
No. Dimensions and schedule identification are only part of a piping design review. Pressure capability must be evaluated using the applicable design code, material information, temperature, corrosion allowance, fabrication details, and project requirements.
What should be checked before using the DWG file?
Verify the drawing’s units, revision, connection geometry, and coordination with the project model. Confirm related fitting, flange, valve, support, and equipment dimensions before using the file for fabrication or construction documentation.