Schedule 10S pipe 18 inch (DN450) is a large-diameter stainless steel pipe size commonly used in piping design, fabrication, drafting, and engineering reference work. This page provides the standard dimensions, wall thickness, inside diameter, and weight per meter for NPS 18 Schedule 10S pipe based on ASME B36.19.
18 Inch Schedule 10S Pipe Dimensions
- Nominal Pipe Size (NPS): 18 inch
- Diameter Nominal (DN): DN450
- Outside Diameter (OD): 457 mm
- Wall Thickness: 4.78 mm
- Inside Diameter (ID): 447.44 mm
- Pipe Weight: 53.31 kg/m
- Pipe Weight Filled With Water: 210.46 kg/m
- Reference Standard: ASME B36.19
- Pipe Type: Stainless Steel Pipe
Schedule 10S Pipe 18 Inch Data Table
| Pipe Size | DN | OD (mm) | Wall Thickness (mm) | ID (mm) | Weight (kg/m) |
|---|---|---|---|---|---|
| 18 inch | 450 | 457 | 4.78 | 447.44 | 53.31 |
What Does Schedule 10S Mean?
Schedule 10S is a stainless steel pipe schedule covered by ASME B36.19. For the same nominal pipe size, the outside diameter remains fixed while the wall thickness changes with the schedule. The āSā designation is commonly used for stainless steel pipe schedules.
Typical Uses of 18 Inch Schedule 10S Pipe
NPS 18 Schedule 10S pipe is commonly referenced in stainless steel piping systems used in industrial plants, utility lines, water-related systems, food and process facilities, and fabrication work where corrosion resistance and dimensional accuracy are important.
Why Pipe Weight Matters
Pipe weight per meter is useful for transport planning, lifting studies, support design, structural loading, fabrication estimates, and installation planning. In large-diameter stainless steel piping systems, total line weight can significantly affect handling and support requirements.
18 Inch Schedule 10S Pipe Calculation Notes
The listed weight is based on standard stainless steel pipe dimensions 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 18 inch Schedule 10S pipe?
The outside diameter is 457 mm.
What is the wall thickness of DN450 Schedule 10S pipe?
The wall thickness is 4.78 mm.
What is the inside diameter of NPS 18 Schedule 10S pipe?
The inside diameter is 447.44 mm.
How much does 18 inch Schedule 10S pipe weigh?
The approximate weight is 53.31 kg/m.
Which standard covers this pipe size?
This dimension data is based on ASME B36.19 for stainless steel pipe.
Conclusion
Schedule 10S pipe 18 inch (DN450) has an outside diameter of 457 mm, wall thickness of 4.78 mm, inside diameter of 447.44 mm, and a weight of 53.31 kg/m. It is a useful reference for piping design, drafting, estimating, and stainless steel fabrication work.