NPS 1-1/4 Sch 40 Steel Pipe, ASME B36.10

The NPS 1-1/4 Sch 40 steel pipe (ASME B36.10): outside diameter 42.164 mm, wall thickness 3.556 mm, outside diameter, inches 1.66 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 1-1/4 Sch 40 pipe, NPS 1-1/4 Sch 40 x 304.8 pipes
• Model id: asme-b36-10-nps1-1-4-sch40
• Standard: ASME B36.10:2022 · size NPS 1-1/4 Sch 40

Lengths

Length (mm)	Part key	Simplified
304.8	asme-b36-10-nps1-1-4-sch40x304-8	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
D	Outside diameter		42.164		42.164	nominal	L1
T	Wall thickness		3.556		3.556	nominal	L1
D_in	Outside diameter, inches		1.66		1.66	nominal	L1
T_in	Wall thickness, inches		0.14		0.14	nominal	L1

Drawing

As a PDF: CC-ASMEB36-10-SZ-nps1-1-4-sch40.pdf.

The NPS 1-1/4 Sch 40 steel pipe beside the NPS 1 Sch 80 and the NPS 1-1/4 Sch 80

The NPS 1-1/4 Sch 40 is number 13 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): 42.164 mm on the NPS 1-1/4 Sch 40 steel pipe, against 33.401 mm on the NPS 1 Sch 80 and 42.164 mm on the NPS 1-1/4 Sch 80.
• Wall thickness (T): 3.556 mm on the NPS 1-1/4 Sch 40 steel pipe, against 4.5466 mm on the NPS 1 Sch 80 and 4.8514 mm on the NPS 1-1/4 Sch 80.
• Outside diameter, inches (D_in): 1.66 mm on the NPS 1-1/4 Sch 40 steel pipe, against 1.315 mm on the NPS 1 Sch 80 and 1.66 mm on the NPS 1-1/4 Sch 80.
• Wall thickness, inches (T_in): 0.14 mm on the NPS 1-1/4 Sch 40 steel pipe, against 0.179 mm on the NPS 1 Sch 80 and 0.191 mm on the NPS 1-1/4 Sch 80.

Other sizes

• One size smaller: NPS 1 Sch 80 Steel Pipe, ASME B36.10.
• One size larger: NPS 1-1/4 Sch 80 Steel Pipe, ASME B36.10.

Documents

• CC-ASMEB36-10-DS-nps1-1-4-sch40.pdf: nps1-1-4-sch40 datasheet: values with levels, lengths, sources
• CC-ASMEB36-10-SZ-nps1-1-4-sch40.pdf: nps1-1-4-sch40 drawing: this size's values on the views
• parts.json: the part record of every length (the platform contract)

Sources

etb-b36-10, steeltube-b36-10. Full citations: the method page and this size's datasheet.

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