This reference explains how to read the dimensional data for Schedule 5S Pipe 22 Inch (DN550 mm) and how the listed values support piping layout, drafting, estimating, and procurement work. The page’s table remains the controlling local reference for the outside diameter, inside diameter, wall thickness, and weights.
Use the information together with the applicable project specifications, material requirements, design conditions, and connection details. A nominal size designation identifies the pipe size family, but it does not replace checking the actual dimensional data when coordinating fittings, flanges, supports, valves, or connected equipment.
Schedule 5S Pipe 22 Inch (DN550 mm) is a stainless steel pipe size used in large piping systems where corrosion resistance and lighter wall thickness are important. This pipe size is commonly referenced under ANSI/ASME B36.19, which is the standard typically used for stainless steel pipe dimensions.
For this size, the pipe has an outside diameter (OD) of 559 mm, an inside diameter (ID) of 549.44 mm, and a wall thickness of 4.78 mm. The listed pipe weight is 65.33 kg/m, while the weight including water is 302.3 kg/m.
Schedule 5S Pipe 22 Inch (DN550 mm) Dimension Table
| Pipe Size | NPS | DN | Outside Diameter (OD) | Inside Diameter (ID) | Wall Thickness | Weight |
|---|---|---|---|---|---|---|
| Schedule 5S Pipe | 22 Inch | DN550 | 559 mm | 549.44 mm | 4.78 mm | 65.33 kg/m |
What Is Schedule 5S Pipe?
Schedule 5S is a thin-wall stainless steel pipe schedule listed in ASME B36.19. The “S” designation is generally used for stainless steel pipe schedules. Compared with heavier pipe schedules, Schedule 5S provides lower wall thickness and lighter pipe weight, which may help reduce fabrication load, support demand, and installation effort in suitable service conditions.
However, pipe schedule selection should always be checked against project requirements such as design pressure, temperature, corrosion allowance, code compliance, and service environment.
22 Inch Schedule 5S Pipe Data
- Standard: ANSI/ASME B36.19
- Pipe Type: Stainless Steel Pipe
- NPS: 22 Inch
- DN: DN550
- OD: 559 mm
- ID: 549.44 mm
- Wall Thickness: 4.78 mm
- Pipe Weight: 65.33 kg/m
- Weight Including Water: 302.3 kg/m
Common Uses of 22 Inch Schedule 5S Pipe
22 inch Schedule 5S stainless steel pipe may be used in systems where a large internal flow area and corrosion-resistant material are required. Typical applications may include:
- Water treatment and utility piping
- Industrial stainless steel process systems
- Low-pressure transfer lines
- Food and beverage production piping
- Chemical and general fabrication projects
Why DN550 Pipe Dimensions Matter
Many users search for DN550 pipe dimensions to verify piping layout, support spacing, transportation limits, fabrication details, and compatibility with fittings or connected equipment. For large-diameter pipe, accurate dimensions are important for spool coordination, structural loading checks, and installation planning.
Knowing the correct 22 inch Schedule 5S pipe dimensions also helps engineers, detailers, estimators, and buyers compare this size with other schedules when reviewing wall thickness, internal flow area, and total pipe weight.
NPS 22 and DN550 Explained
NPS stands for Nominal Pipe Size in inches, while DN stands for Diameter Nominal in metric designation. For this pipe size:
- NPS 22 = inch-based nominal pipe size
- DN550 = metric nominal designation
Even though DN is shown in metric format, the actual outside diameter must still be checked from the standard table. For this size, the OD is 559 mm.
Reference for Schedule 5S Pipe 22 Inch
This page provides a quick dimensional reference for engineers, piping designers, students, fabricators, and procurement teams looking for Schedule 5S Pipe 22 Inch (DN550 mm) data in a clear format.
Reference Standard: ANSI/ASME B36.19 stainless steel pipe dimensions.
How to Use This 22 Inch Schedule 5S Pipe Reference
The most useful distinction is between the pipe’s nominal designation and its physical dimensions. NPS 22 and DN550 identify the nominal size, while the listed OD, ID, and wall thickness are the values needed for drafting and coordination. These dimensions should be checked when preparing spool drawings, reviewing clearances, or comparing this pipe with another schedule.
Dimensional coordination
The outside diameter is especially important when coordinating clamps, supports, sleeves, insulation space, and connections to fittings or equipment. The inside diameter is relevant to flow-path coordination and internal clearance. Wall thickness can affect end preparation, fabrication details, corrosion evaluation, and the selection of compatible components.
Understanding the two weight entries
The listed pipe weight represents the pipe itself per unit length. The separate weight including water entry represents a water-filled reference condition. These values can help with preliminary support and handling discussions, but actual operating loads may also include contents other than water, insulation, valves, fittings, lining, external attachments, and other project-specific items.
Schedule selection is a design check
Schedule 5S is described in the source content as a thin-wall stainless steel schedule. Its lower listed wall thickness and pipe weight may be useful where the service and design requirements permit, but a schedule should not be selected from size or weight alone. Pressure, temperature, corrosion allowance, material specification, joining method, code requirements, and service conditions should be reviewed by the responsible engineering team.
Using the DWG reference
The downloadable DWG can support preliminary CAD coordination for this pipe entry. Before incorporating it into a project model or fabrication package, confirm the drawing units, geometry, revision status, layer conventions, connection assumptions, and the project’s approved dimensional source. The DWG should complement—not replace—the dimension table and project design documentation.
Related Pipe Reference Topics
Readers comparing this entry may also benefit from related references covering pipe schedules, NPS and DN designations, stainless steel pipe dimensions, pipe weight calculations, flange dimensions, and pipe fittings. These topics help connect the nominal pipe size to the components and calculations used in a complete piping system.
FAQ: Schedule 5S Pipe 22 Inch (DN550)
What is the nominal size of this pipe?
The nominal designations are NPS 22 and DN550. The actual outside diameter should be taken from the dimensional data shown on this page.
What type of pipe is Schedule 5S?
Schedule 5S is identified here as a stainless steel pipe schedule associated with the stainless steel pipe dimension reference cited in the source content. The applicable material grade and project specification must be confirmed separately.
Why are both OD and ID provided?
The OD supports external coordination, including supports, sleeves, clamps, and equipment interfaces. The ID describes the internal flow passage and can be relevant to hydraulic review and internal clearance checks.
Does the pipe weight including water represent every operating condition?
No. It is a listed water-filled reference condition. Actual system loads may differ depending on the conveyed fluid and on additions such as insulation, fittings, valves, supports, and attachments.
Can this dimensional data be used to approve a piping design?
No. The data is a dimensional reference, not a complete design approval. Pressure, temperature, corrosion, material, joining, code, support, and service requirements should be evaluated for the specific project.
Is the DWG file ready for fabrication without review?
The DWG is provided as a drafting reference. Review its units, geometry, revision, and project compatibility before using it in an issued design or fabrication document.