Schedule STD Pipe 22 Inch (DN550) is a steel pipe size commonly used in large industrial and utility piping systems where standard dimensions, structural reliability, and high flow capacity are important. Based on the current page data under ANSI/ASME B36.10, this pipe size has an outside diameter of 559 mm, an inside diameter of 539.94 mm, a wall thickness of 9.53 mm, and a pipe weight of 129.14 kg/m.
22 Inch Schedule STD Pipe Dimensions
The following values are listed for NPS 22 Schedule STD pipe, which corresponds to DN550 in metric designation.
- Pipe Size: NPS 22 Inch
- DN Size: DN550
- Outside Diameter (OD): 559 mm
- Inside Diameter (ID): 539.94 mm
- Wall Thickness: 9.53 mm
- Pipe Weight: 129.14 kg/m
- Pipe Weight Including Water: 357.99 kg/m
- Reference Standard: ANSI/ASME B36.10
Schedule STD Pipe 22 Inch (DN550) Data Table
| Pipe Schedule | NPS | DN | OD (mm) | ID (mm) | Wall Thickness (mm) | Weight (kg/m) |
|---|---|---|---|---|---|---|
| STD | 22 Inch | 550 | 559 | 539.94 | 9.53 | 129.14 |
What Is Schedule STD Pipe?
Schedule STD means Standard Weight in the IPS pipe system and is commonly referenced for carbon steel and steel pipe dimensions under ASME B36.10. In practical piping work, Schedule STD is used as a standard wall thickness designation for many nominal pipe sizes. It helps engineers, fabricators, and buyers confirm dimensional compatibility, estimate weight, and coordinate with fittings, flanges, supports, and structural loads.
Common Uses of 22 Inch Schedule STD Pipe
22 inch Schedule STD pipe is commonly used in large piping systems where high flow capacity and standard steel pipe dimensions are required. This size is often selected for utility, transmission, and industrial services where large-volume flow and reliable dimensional data are important for design and construction.
- Large water transmission lines for plant and utility service
- Cooling water systems in power plants and industrial facilities
- Stormwater and drainage piping in infrastructure projects
- Industrial utility piping for bulk fluid transport
- Pipeline headers and manifolds in large process plants
- Pump suction and discharge lines where large diameter piping is needed
- Municipal and public works projects requiring large steel pipe sizes
- Replacement and upgrade projects where standard pipe dimensions are required
In practical engineering work, this pipe size may be reviewed when checking flow capacity, support loading, transport weight, handling requirements, and installation planning. Final pipe selection should always be verified against project pressure, temperature, fluid type, corrosion allowance, and material specifications.
Why OD, ID, Thickness, and Weight Matter
Exact OD, ID, wall thickness, and weight values are important for support design, material take-off, transport planning, lifting studies, welding preparation, and installation work. For a pipe as large as 22 inch DN550, accurate weight data is especially useful for crane selection, support design, and logistics planning. Inside diameter is also important for flow calculations and hydraulic capacity review.
NPS 22 and DN550 Explained
NPS means nominal pipe size in inch units, while DN means diameter nominal in metric units. The current page identifies this pipe as NPS 22 and DN550, which is the standard naming format widely used in piping drawings, specifications, and procurement documents.
Conclusion
Schedule STD Pipe 22 Inch (DN550) is listed on the current page with 559 mm OD, 539.94 mm ID, 9.53 mm wall thickness, and 129.14 kg/m weight. It is a useful steel pipe reference for engineers, designers, and buyers who need standard dimensional and weight data for large piping systems and project coordination.