NPS 1 Sch 80 Steel Pipe, ASME B36.10
The NPS 1 Sch 80 steel pipe (ASME B36.10): outside diameter 33.401 mm, wall thickness 4.5466 mm, outside diameter, inches 1.315 mm. Available as one length, 304.8 mm, as simplified STEP.

How these parts are made, and what the levels mean: read the method
- Also searched as: NPS 1 Sch 80 pipe, NPS 1 Sch 80 x 304.8 pipes
- Model id:
asme-b36-10-nps1-sch80
- Standard: ASME B36.10:2022 · size NPS 1 Sch 80
Lengths
| Length (mm) | Part key | Simplified |
|---|
| 304.8 | asme-b36-10-nps1-sch80x304-8 | STEP |
Dimensions

| Symbol | Name | min | nom | max | Modeled | Rule | Level |
|---|
| D | Outside diameter | | 33.401 | | 33.401 | nominal | L1 |
| T | Wall thickness | | 4.5466 | | 4.5466 | nominal | L1 |
| D_in | Outside diameter, inches | | 1.315 | | 1.315 | nominal | L1 |
| T_in | Wall thickness, inches | | 0.179 | | 0.179 | nominal | L1 |
Drawing

As a PDF: CC-ASMEB36-10-SZ-nps1-sch80.pdf.
The NPS 1 Sch 80 steel pipe beside the NPS 1 Sch 40 and the NPS 1-1/4 Sch 40
The NPS 1 Sch 80 is number 12 of the 18 ASME B36.10 steel pipes published here, listed from NPS 1/8 Sch 40 to NPS 2 Sch 80.
- Outside diameter (D): 33.401 mm on the NPS 1 Sch 80 steel pipe, against 33.401 mm on the NPS 1 Sch 40 and 42.164 mm on the NPS 1-1/4 Sch 40.
- Wall thickness (T): 4.5466 mm on the NPS 1 Sch 80 steel pipe, against 3.3782 mm on the NPS 1 Sch 40 and 3.556 mm on the NPS 1-1/4 Sch 40.
- Outside diameter, inches (D_in): 1.315 mm on the NPS 1 Sch 80 steel pipe, against 1.315 mm on the NPS 1 Sch 40 and 1.66 mm on the NPS 1-1/4 Sch 40.
- Wall thickness, inches (T_in): 0.179 mm on the NPS 1 Sch 80 steel pipe, against 0.133 mm on the NPS 1 Sch 40 and 0.14 mm on the NPS 1-1/4 Sch 40.
Other sizes
Documents
Sources
etb-b36-10, steeltube-b36-10. Full citations: the method page and this size's datasheet.
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