This reference page is intended for engineers, designers, drafters, estimators, fabricators, and purchasing teams checking 22 inch Schedule 10 pipe data. It brings the NPS designation, DN designation, outside diameter, wall thickness, inside diameter, and unit weight together in one place for practical piping work.
Use the dimensional list and data table as a quick lookup during layout preparation, material takeoff, CAD coordination, and preliminary support or handling reviews. For related terminology, compare this page with the site’s references on pipe schedules, NPS and DN conversions, and steel pipe dimensions.
Schedule 10 pipe 22 inch (DN550) is a large-diameter steel pipe size commonly used as a reference in piping design, fabrication, drafting, and estimation work. This page provides the standard dimensions, wall thickness, inside diameter, and weight per meter for NPS 22 Schedule 10 pipe based on ASME B36.10.
22 Inch Schedule 10 Pipe Dimensions
- Nominal Pipe Size (NPS): 22 inch
- Diameter Nominal (DN): DN550
- Outside Diameter (OD): 559 mm
- Wall Thickness: 6.35 mm
- Inside Diameter (ID): 546.3 mm
- Pipe Weight: 86.55 kg/m
- Pipe Weight Filled With Water: 320.82 kg/m
- Reference Standard: ASME B36.10
Schedule 10 Pipe 22 Inch Data Table
| Pipe Size | DN | OD (mm) | Wall Thickness (mm) | ID (mm) | Weight (kg/m) |
|---|---|---|---|---|---|
| 22 inch | 550 | 559 | 6.35 | 546.3 | 86.55 |
What Does Schedule 10 Mean?
Schedule 10 refers to the wall thickness series of the pipe. For the same nominal pipe size, the outside diameter remains fixed while the wall thickness changes depending on the schedule. A thicker wall generally increases pipe weight and reduces the inside diameter.
Typical Uses of 22 Inch Schedule 10 Pipe
NPS 22 Schedule 10 pipe is commonly used where large flow capacity is needed with relatively lighter wall thickness than heavier schedules. It may be used in water transfer lines, utility systems, low-pressure process piping, drainage applications, and general plant layout or fabrication reference work.
Why Pipe Weight Matters
Pipe weight per meter is important for transport planning, support design, structural loading, fabrication estimates, and lifting calculations. In large-diameter piping systems, total line weight can significantly affect support spacing, installation methods, and project cost.
22 Inch Schedule 10 Pipe Calculation Notes
The listed weight is based on standard steel pipe dimension data using the outside diameter and wall thickness of the pipe. Actual product weight may vary slightly depending on manufacturing tolerance, material grade, and supplier standard.
Frequently Asked Questions
What is the outside diameter of 22 inch Schedule 10 pipe?
The outside diameter is 559 mm.
What is the wall thickness of DN550 Schedule 10 pipe?
The wall thickness is 6.35 mm.
What is the inside diameter of NPS 22 Schedule 10 pipe?
The inside diameter is 546.3 mm.
How much does 22 inch Schedule 10 pipe weigh?
The approximate weight is 86.55 kg/m.
Which standard covers this pipe size?
This dimension data is based on ASME B36.10 for welded and seamless wrought steel pipe.
Conclusion
Schedule 10 pipe 22 inch (DN550) has an outside diameter of 559 mm, wall thickness of 6.35 mm, inside diameter of 546.3 mm, and a weight of 86.55 kg/m. It is a useful reference for piping design, drafting, estimating, and fabrication work.
How to Read This Pipe Reference
The nominal size identifies the pipe designation used in piping specifications, while the outside diameter is the physical dimension typically coordinated with fittings, flanges, clamps, and layout clearances. The schedule identifies the wall-thickness series rather than a pressure rating by itself.
The inside diameter is useful when checking flow-area assumptions, lining arrangements, internal clearances, and connection details. Because the inside diameter is derived from the outside diameter and wall thickness, the values should be reviewed together rather than treated as independent selections.
Using the Weight Data
The listed pipe weight is a useful basis for material estimates, shipping reviews, lifting plans, and preliminary support-load checks. The water-filled value should be kept separate from the dry pipe value when reviewing operating or temporary loads. Final support, stress, pressure, and fabrication decisions require the applicable project specifications, material information, corrosion allowance, contents, insulation, fittings, and engineering checks.
Coordination With Related Components
When this pipe size is used in a drawing or model, verify that connected fittings, flanges, valves, branches, and supports use compatible dimensional references. The pipe table is a starting point for coordination; it does not replace component-specific dimensions or the requirements of the piping class.
For broader design research, this page can be reviewed alongside internal references for pipe fitting dimensions, flange dimensions, pipe support design, and DWG piping details. Always confirm the governing project standard and supplier documentation before procurement or fabrication.
Additional Questions About 22 Inch Schedule 10 Pipe
Is nominal pipe size the same as the measured diameter?
No. The nominal designation is a standardized identification, while the outside and inside diameters describe physical dimensions. Use the dimensional values in the table when coordinating fabrication, fittings, and clearances.
Does Schedule 10 alone establish the allowable pressure?
No. A schedule describes the wall-thickness series. Allowable pressure depends on factors such as material, temperature, joining method, corrosion allowance, code requirements, and the project design basis.
Can the listed weight be used as the final installed line load?
No. The pipe weight is a reference value per unit length. An installed-load review should also consider contents, fittings, valves, flanges, insulation, supports, and other project-specific additions.
Why should the standard reference be checked before ordering?
Dimension tables, product specifications, tolerances, and purchasing requirements must be aligned with the governing standard and project specification. Confirm the applicable edition and supplier documentation before release.