NPS 1 Sch 40 Steel Pipe, ASME B36.10
The NPS 1 Sch 40 steel pipe (ASME B36.10): outside diameter 33.401 mm, wall thickness 3.3782 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 40 pipe, NPS 1 Sch 40 x 304.8 pipes
- Model id:
asme-b36-10-nps1-sch40
- Standard: ASME B36.10:2022 · size NPS 1 Sch 40
Lengths
| Length (mm) | Part key | Simplified |
|---|
| 304.8 | asme-b36-10-nps1-sch40x304-8 | STEP |
Dimensions

| Symbol | Name | min | nom | max | Modeled | Rule | Level |
|---|
| D | Outside diameter | | 33.401 | | 33.401 | nominal | L1 |
| T | Wall thickness | | 3.3782 | | 3.3782 | nominal | L1 |
| D_in | Outside diameter, inches | | 1.315 | | 1.315 | nominal | L1 |
| T_in | Wall thickness, inches | | 0.133 | | 0.133 | nominal | L1 |
Drawing

As a PDF: CC-ASMEB36-10-SZ-nps1-sch40.pdf.
The NPS 1 Sch 40 steel pipe beside the NPS 3/4 Sch 80 and the NPS 1 Sch 80
The NPS 1 Sch 40 is number 11 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 40 steel pipe, against 26.67 mm on the NPS 3/4 Sch 80 and 33.401 mm on the NPS 1 Sch 80.
- Wall thickness (T): 3.3782 mm on the NPS 1 Sch 40 steel pipe, against 3.9116 mm on the NPS 3/4 Sch 80 and 4.5466 mm on the NPS 1 Sch 80.
- Outside diameter, inches (D_in): 1.315 mm on the NPS 1 Sch 40 steel pipe, against 1.05 mm on the NPS 3/4 Sch 80 and 1.315 mm on the NPS 1 Sch 80.
- Wall thickness, inches (T_in): 0.133 mm on the NPS 1 Sch 40 steel pipe, against 0.154 mm on the NPS 3/4 Sch 80 and 0.179 mm on the NPS 1 Sch 80.
Other sizes
Documents
Sources
etb-b36-10, steeltube-b36-10. Full citations: the method page and this size's datasheet.
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