This reference page is intended for engineers, designers, fabricators, estimators, and CAD drafters who need a consistent dimensional reference for 22 inch Schedule 160 pipe. Use the table and explanations below to distinguish nominal size, outside diameter, wall thickness, inside diameter, and calculated pipe weight during layout and planning work.
Because Schedule 160 is a heavy-wall designation, the dimensional relationship between the fixed outside diameter and the reduced inside diameter is especially important when checking clearances, connection details, material quantities, handling requirements, and piping-model geometry. The downloadable DWG provides a practical starting point for drafting workflows; project specifications and approved manufacturer data should control procurement and final design decisions.
Schedule 160 pipe 22 inch (DN550) is an extra heavy-wall steel pipe size commonly used in piping design, fabrication, drafting, and engineering estimation work. This page provides the standard dimensions, wall thickness, inside diameter, and weight per meter for NPS 22 Schedule 160 pipe based on ASME B36.10.
22 Inch Schedule 160 Pipe Dimensions
- Nominal Pipe Size (NPS): 22 inch
- Diameter Nominal (DN): DN550
- Outside Diameter (OD): 559 mm
- Wall Thickness: 53.98 mm
- Inside Diameter (ID): 451.04 mm
- Pipe Weight: 672.3 kg/m
- Pipe Weight Filled With Water: 831.99 kg/m
- Reference Standard: ASME B36.10
- Pipe Type: Steel Pipe
Schedule 160 Pipe 22 Inch Data Table
| Pipe Size | DN | OD (mm) | Wall Thickness (mm) | ID (mm) | Weight (kg/m) |
|---|---|---|---|---|---|
| 22 inch | 550 | 559 | 53.98 | 451.04 | 672.3 |
What Does Schedule 160 Mean?
Schedule 160 refers to an extra heavy wall thickness series used for steel pipe under ASME B36.10. For the same nominal pipe size, the outside diameter remains fixed while the wall thickness increases according to the schedule. A much thicker wall reduces the inside diameter and significantly increases pipe weight.
Typical Uses of 22 Inch Schedule 160 Pipe
NPS 22 Schedule 160 pipe is commonly referenced for very heavy-duty industrial piping systems where extremely high wall thickness is required. It may be used in process piping, plant utility systems, structural loading checks, fabrication work, and engineering applications where pipe strength and wall thickness are more critical than maximum flow area.
Why Pipe Weight Matters
Pipe weight per meter is essential for transport planning, crane lifting studies, support design, structural loading, fabrication estimates, and installation planning. For a 22 inch Schedule 160 pipe, the extra heavy wall thickness results in much higher installed weight than lighter schedules, so accurate weight data is important for engineering and construction work.
22 Inch Schedule 160 Pipe Calculation Notes
The listed weight is based on standard steel pipe dimensions using the outside diameter and wall thickness of the pipe. Actual product weight may vary slightly depending on manufacturing tolerance, material specification, and supplier standard.
Frequently Asked Questions
What is the outside diameter of 22 inch Schedule 160 pipe?
The outside diameter is 559 mm.
What is the wall thickness of DN550 Schedule 160 pipe?
The wall thickness is 53.98 mm.
What is the inside diameter of NPS 22 Schedule 160 pipe?
The inside diameter is 451.04 mm.
How much does 22 inch Schedule 160 pipe weigh?
The approximate weight is 672.3 kg/m.
Which standard covers this pipe size?
This dimension data is based on ASME B36.10 for steel pipe.
Conclusion
Schedule 160 pipe 22 inch (DN550) has an outside diameter of 559 mm, wall thickness of 53.98 mm, inside diameter of 451.04 mm, and a weight of 672.3 kg/m. It is a useful reference for piping design, fabrication, estimating, and heavy-duty industrial engineering work.
How to Read This 22 Inch Schedule 160 Pipe Reference
NPS 22 and DN550 identify the nominal pipe size, while the listed outside diameter is the dimensional value used for many layout and fabrication checks. The schedule identifies the wall-thickness series. These terms should not be treated as interchangeable: nominal size is a designation, outside diameter describes the external envelope, and inside diameter reflects the available bore after wall thickness is accounted for.
Why the dimensional relationships matter
The outside diameter is useful when coordinating supports, clamps, insulation space, branch connections, and modeled interference checks. Wall thickness affects the amount of steel in the pipe and therefore influences weight, handling, support loads, and fabrication planning. Inside diameter is the relevant geometric reference when reviewing the pipe opening or coordinating internal flow passages. A complete piping review should also consider the applicable material specification, joining method, corrosion allowance, temperature, pressure, and design code rather than relying on schedule designation alone.
Using the weight data in project work
The tabulated weight per meter can support preliminary material takeoffs, transport planning, lifting studies, pipe-rack loading checks, and installation planning. The water-filled value is a separate planning reference and should not be confused with the empty-pipe value. Actual supplied mass can vary with manufacturing tolerances, material requirements, coating, lining, fittings, and attached components, so procurement and structural calculations should use verified project data.
Related PipeSTD resources
For broader drafting and design work, this page can be used alongside references for pipe schedules, steel pipe dimensions, pipe weight calculations, flanges and fittings, and pipe support design. The accompanying 22 inch DN550 Schedule 160 DWG is particularly useful when a dimensional profile is needed for CAD coordination, while the table remains the primary reference for the values shown on this page.
Additional Questions About 22 Inch Schedule 160 Pipe
Is 22 inch the measured outside diameter?
No. The 22 inch designation is the nominal pipe size. The dimensional table provides the corresponding outside diameter for layout, fabrication, and coordination work.
Does Schedule 160 by itself define the pipe pressure rating?
No. Schedule describes a wall-thickness series. Pressure capability depends on additional factors such as material specification, temperature, design code, manufacturing requirements, corrosion allowance, joints, and applicable engineering checks.
Should the empty-pipe weight or water-filled weight be used for support planning?
The appropriate value depends on the load case. Empty-pipe weight can support handling and basic material planning, while operating or test conditions may require consideration of the pipe contents and other attached loads. Use the governing project load cases for final support and structural checks.
Can the DWG file replace dimensional verification?
No. The DWG is a drafting aid. Confirm dimensions, tolerances, end preparation, material requirements, and supplier information against the approved project documents before fabrication or procurement.