8" pipe weight and dimensions

28.58 lb/ft · 42.54 kg/m (Sch 40)

8" nominal pipe size (DN) has an outside diameter of 8.625 in (219.1 mm). Schedule 40 has a 0.322 in (8.18 mm) wall and weighs 28.58 lb per foot.

8" pipe weight calculator

Total weight
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8" pipe schedules

ScheduleWall (in)Wall (mm)ID (in)ID (mm)lb/ftkg/m21 ft (lb)6 m (kg)
Schedule 5S 0.1092.77 8.407213.6 9.9214.77 20888.6
Schedule 10S 0.1483.76 8.329211.6 13.4119.96 282119.8
Schedule 10 0.1483.76 8.329211.6 13.4119.96 282119.8
Schedule 20 0.2506.35 8.125206.4 22.3833.31 470199.9
Schedule 30 0.2777.04 8.071205.0 24.7236.79 519220.7
Schedule 40S 0.3228.18 7.981202.7 28.5842.54 600255.2
Standard (STD) 0.3228.18 7.981202.7 28.5842.54 600255.2
Schedule 40 0.3228.18 7.981202.7 28.5842.54 600255.2
Schedule 60 0.40610.31 7.813198.5 35.6753.09 749318.5
Schedule 80S 0.50012.70 7.625193.7 43.4364.64 912387.8
Extra strong (XS) 0.50012.70 7.625193.7 43.4364.64 912387.8
Schedule 80 0.50012.70 7.625193.7 43.4364.64 912387.8
Schedule 100 0.59315.06 7.439189.0 50.9275.78 1,069454.7
Schedule 120 0.71918.26 7.187182.6 60.7790.44 1,276542.6
Schedule 140 0.81220.62 7.001177.9 67.82100.94 1,424605.6
Double extra strong (XXS) 0.87522.22 6.875174.7 72.49107.89 1,522647.3
Schedule 160 0.90623.01 6.813173.1 74.76111.27 1,570667.6

Schedules with an S suffix (5S, 10S, 40S, 80S) are stainless steel pipe per ASME B36.19M; weights shown are for carbon steel, so multiply by about 1.01 for stainless steel.

Weight filled with water and flow area

For supports and hangers, add the weight of the contents. Water weighs 62.4 lb/ft³ (1000 kg/m³).

ScheduleFlow area (in²)Flow area (cm²)Water (lb/ft)Pipe + water (lb/ft)Pipe + water (kg/m)
Schedule 5S55.51358.2 24.0633.9850.59
Schedule 10S54.48351.6 23.6237.0355.12
Schedule 1054.48351.6 23.6237.0355.12
Schedule 2051.85334.6 22.4844.8666.77
Schedule 3051.16330.1 22.1846.9069.80
Schedule 40S50.03322.8 21.6950.2774.82
Standard (STD)50.03322.8 21.6950.2774.82
Schedule 4050.03322.8 21.6950.2774.82
Schedule 6047.94309.4 20.7856.4584.03
Schedule 80S45.66294.7 19.8063.2394.11
Extra strong (XS)45.66294.7 19.8063.2394.11
Schedule 8045.66294.7 19.8063.2394.11
Schedule 10043.46280.5 18.8469.76103.83
Schedule 12040.57261.8 17.5978.36116.62
Schedule 14038.50248.5 16.6984.51125.79
Double extra strong (XXS)37.12239.6 16.0988.58131.85
Schedule 16036.46235.3 15.8090.56134.80

Wall thickness by schedule

Sch 5S 2.77 mm Sch 10S 3.76 mm Sch 10 3.76 mm Sch 20 6.35 mm Sch 30 7.04 mm Sch 40S 8.18 mm STD 8.18 mm Sch 40 8.18 mm Sch 60 10.31 mm Sch 80S 12.7 mm XS 12.7 mm Sch 80 12.7 mm Sch 100 15.06 mm Sch 120 18.26 mm Sch 140 20.62 mm XXS 22.22 mm Sch 160 23.01 mm

Cross-section (Sch 40)

OD 219.1 mm (8.625 in)

Drawn to scale.

How the weight is calculated

Weight per foot = 10.69 × (OD − t) × t = 10.69 × (8.625 − 0.322) × 0.322 = 28.58 lb/ft.

The factor 10.69 is the density of carbon steel (0.2836 lb/in³) × π × 12 in/ft.

A large-diameter steel pipe with a cut pipe section on the ground
Photo: Fumikas Sagisavas, Wikimedia Commons, CC0.

Frequently asked questions

How much does 8" Schedule 40 pipe weigh?

8" Sch 40 pipe weighs 28.58 lb/ft (42.54 kg/m). A 21 ft random length weighs about 600 lb and a 6 m length about 255.2 kg.

What is the outside diameter of 8" pipe?

8.625 in (219.1 mm). The outside diameter is the same for every schedule; a higher schedule means a thicker wall and a smaller inside diameter.

How much does 8" Schedule 40 pipe weigh full of water?

50.27 lb/ft: 28.58 lb/ft of steel plus 21.69 lb/ft of water (74.82 kg/m in total). Use this for pipe support and hanger loads.

What is the inside diameter of 8" Schedule 40 pipe?

7.981 in (202.7 mm), from OD − 2 × wall = 8.625 − 2 × 0.322.

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Dimensions per ASME B36.10M-2015, adapted from Wikipedia, "Nominal Pipe Size" (CC BY-SA 4.0). Weights are plain-end carbon steel; verify with the mill certificate.