What is the outside diameter of 1-1/2 inch pipe?

48.3 mm (1.900 in), in any schedule: it is the DN 40 pipe of ASME B36.10M. The wall changes with the schedule, and the inside diameter with it.

What is the wall thickness of 1-1/2 inch schedule 40 pipe?

3.68 mm (0.145 in), with an inside diameter of 40.94 mm (1.610 in); carbon steel pipe weighs 4.05 kg/m (2.72 lb/ft).

What is the difference between schedule 40 and 80 in 1-1/2 inch pipe?

The wall: 3.68 mm (0.145 in) in schedule 40 and 5.08 mm (0.200 in) in 80. The outside diameter is the same, so schedule 80 has the smaller bore -- 38.14 mm (1.500 in) against 40.94 mm (1.610 in) -- and weighs 5.41 kg/m (3.63 lb/ft) against 4.05 kg/m (2.72 lb/ft).

1-1/2 inch pipe (DN 40): outside diameter, wall thickness and weight by schedule

A 1-1/2 inch pipe (DN 40) has a 48.3 mm (1.900 in) outside diameter in every schedule: what changes is the wall, and with it the inside diameter and the weight. Designations that give the same wall share a row.

Schedule	Wall	ID	Weight
Sch 5 / 5S	1.65 mm (0.065 in)	45.00 mm (1.770 in)	1.90 kg/m (1.28 lb/ft)
Sch 10 / 10S	2.77 mm (0.109 in)	42.76 mm (1.682 in)	3.11 kg/m (2.09 lb/ft)
Sch 30	3.18 mm (0.125 in)	41.94 mm (1.650 in)	3.54 kg/m (2.37 lb/ft)
Sch 40 / STD / 40S	3.68 mm (0.145 in)	40.94 mm (1.610 in)	4.05 kg/m (2.72 lb/ft)
Sch 80 / XS / 80S	5.08 mm (0.200 in)	38.14 mm (1.500 in)	5.41 kg/m (3.63 lb/ft)
Sch 160	7.14 mm (0.281 in)	34.02 mm (1.338 in)	7.25 kg/m (4.86 lb/ft)
XXS	10.15 mm (0.400 in)	28.00 mm (1.100 in)	9.55 kg/m (6.41 lb/ft)

Plain-end weight of carbon steel pipe, by the standard's own formula: 10.69 × (D − t) × t in lb/ft, with D and t in inches (0.0246615 × (D − t) × t in kg/m, in mm). Austenitic stainless weighs about 2% more.

Lay out on 1-1/2 inch pipe

The outside diameter and the wall of the chosen schedule go to the calculator, which opens with them filled in and draws without an account.

Schedule Pipe saddle (90° tee) 90° lobster back bend

Questions

What is the outside diameter of 1-1/2 inch pipe?: 48.3 mm (1.900 in), in any schedule: it is the DN 40 pipe of ASME B36.10M. The wall changes with the schedule, and the inside diameter with it.
What is the wall thickness of 1-1/2 inch schedule 40 pipe?: 3.68 mm (0.145 in), with an inside diameter of 40.94 mm (1.610 in); carbon steel pipe weighs 4.05 kg/m (2.72 lb/ft).
What is the difference between schedule 40 and 80 in 1-1/2 inch pipe?: The wall: 3.68 mm (0.145 in) in schedule 40 and 5.08 mm (0.200 in) in 80. The outside diameter is the same, so schedule 80 has the smaller bore -- 38.14 mm (1.500 in) against 40.94 mm (1.610 in) -- and weighs 5.41 kg/m (3.63 lb/ft) against 4.05 kg/m (2.72 lb/ft).

1-1/2 inch pipe (DN 40): outside diameter, wall thickness and weight by schedule

Lay out on 1-1/2 inch pipe

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