ASME B36.10 is a widely recognized American Society of Mechanical Engineers (ASME) standard that covers the dimensions of welded and seamless wrought steel pipes. It provides the standard nominal pipe sizes (NPS), outside diameters (OD), wall thicknesses, and related dimensional specifications for carbon steel pipes used in pressure and non-pressure applications.The goal of ASME B36.10 is to create uniformity and compatibility in pipe manufacturing and application, ensuring that pipes from different manufacturers can be interchanged and fit correctly in piping systems.
What is Schedule 80 Carbon Steel Pipe According to ASME B36.10?
Schedule 80 Carbon Steel Pipe refers to carbon steel pipes manufactured according to the dimensional standards set by ASME B36.10, with wall thicknesses corresponding to Schedule 80.
Material: Carbon steel, which is an alloy of iron and carbon with excellent strength, machinability, and weldability.
Dimensions: The pipe dimensions (outside diameter and wall thickness) conform strictly to ASME B36.10 Schedule 80 specifications.
Pressure Rating: Due to its thicker walls, Schedule 80 pipes can handle higher pressures compared to Schedule 40 pipes of the same nominal size.
The term "Schedule" in piping refers to the wall thickness of the pipe. Schedule 80 indicates a thicker wall compared to other common schedules like
Schedule 40 or Schedule 20. Specifically, Schedule 80 pipes have a wall thickness that allows them to withstand higher pressures and greater mechanical stress.
For example, an 8-inch Schedule 40 pipe typically has a wall thickness of 0.322 inches, whereas an 8-inch Schedule 80 pipe has a thickness of 0.500 inches. This difference significantly enhances the pipe’s strength and pressure-handling capabilities.
ASME B36.10 Schedule 80 Carbon Steel Pipe Dimensions
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Nominal size [inches]
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Outside diameter [inches]
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Outside diameter [mm]
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Wall thickness [inches]
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Wall thickness [mm]
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Weight [lb/ft]
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Weight [kg/m]
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8 inches
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8.625 inches
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219.1 mm
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0.250 inches
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6.35 mm
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22.36 lb/ft
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33.31 kg/m
|
|
10 inches
|
10.750 inches
|
273.0 mm
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0.250 inches
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6.35 mm
|
28.04 lb/ft
|
41.77 kg/m
|
|
12 inches
|
12.750 inches
|
323.8 mm
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0.250 inches
|
6.35 mm
|
33.38 lb/ft
|
49.73 kg/m
|
|
14 inches
|
14.000 inches
|
355.6 mm
|
0.312 inches
|
7.92 mm
|
45.61 lb/ft
|
67.90 kg/m
|
|
16 inches
|
16.000 inches
|
406.4 mm
|
0.312 inches
|
7.92 mm
|
52.27 lb/ft
|
77.83 kg/m
|
|
18 inches
|
18.000 inches
|
457.0 mm
|
0.312 inches
|
7.92 mm
|
58.94 lb/ft
|
87.71 kg/m
|
|
20 inches
|
20.000 inches
|
508.0 mm
|
0.375 inches
|
9.53 mm
|
78.60 lb/ft
|
117.15 kg/m
|
|
22 inches
|
22.000 inches
|
559.0 mm
|
0.375 inches
|
9.53 mm
|
86.61 lb/ft
|
129.13 kg/m
|
|
24 inches
|
24.000 inches
|
610.0 mm
|
0.375 inches
|
9.53 mm
|
94.62 lb/ft
|
141.12 kg/m
|
|
26 inches
|
26.000 inches
|
660.0 mm
|
0.500 inches
|
12.70 mm
|
136.17 lb/ft
|
202.72 kg/m
|
|
28 inches
|
28.000 inches
|
711.0 mm
|
0.500 inches
|
12.70 mm
|
146.85 lb/ft
|
218.69 kg/m
|
|
30 inches
|
30.000 inches
|
762.0 mm
|
0.500 inches
|
12.70 mm
|
157.53 lb/ft
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234.67 kg/m
|
|
32 inches
|
32.000 inches
|
813.0 mm
|
0.500 inches
|
12.70 mm
|
168.21 lb/ft
|
250.64 kg/m
|
|
34 inches
|
34.000 inches
|
864.0 mm
|
0.500 inches
|
12.70 mm
|
178.89 lb/ft
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266.61 kg/m
|
|
36 inches
|
36.000 inches
|
914.0 mm
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0.500 inches
|
12.70 mm
|
189.57 lb/ft
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282.27 kg/m
|
How Does ASME B36.10 Schedule 80 Differ from Other Carbon Steel Pipe Schedules?
ASME B36.10 Schedule 80
Carbon Steel Pipe stands out from other schedules primarily due to its thicker wall compared to lower schedules like Schedule 40 or Schedule 20. This increased wall thickness translates into several key benefits.
First and foremost, Schedule 80 pipes provide superior pressure containment capabilities. The thicker walls enable the pipe to withstand higher internal and external pressures, making it ideal for demanding applications involving high-pressure systems. This characteristic is especially crucial in industries such as oil and gas, where pipelines frequently encounter significant pressure variations.
Additionally, the robust wall thickness enhances the pipe’s overall durability and resistance to external stresses, improving its performance and longevity in challenging environments.
Scope of the ASME B36 Standard
This standard covers the standardization of dimensions of welded and seamless wrought steel pipe for use at high or low temperatures and pressures. The term pipe, as distinct from tube, applies to tubular products of sizes commonly used in pipe and piping systems. The outside diameter of pipe NPS 12 (DN 300) and smaller is numerically larger than the corresponding size. Conversely, the outside diameter of pipe is numerically the same as the size number for all sizes.
Features of ASME B36.10 Schedule 80 Carbon Steel Pipe
1.Material Composition
Made from carbon steel, these pipes offer excellent strength, toughness, and weldability, balancing durability and machinability for various industrial uses.
2.Wall Thickness and Pressure Rating
With thicker walls, Schedule 80 pipes handle higher pressures and provide better resistance to mechanical damage, ideal for high-pressure fluids, steam, or gases.
3.Dimensional Accuracy
ASME B36.10 ensures precise outside diameter and wall thickness for easy installation and system compatibility.
4.Seamless and Welded Options
Available as seamless pipes for high strength and welded pipes for cost-effectiveness and flexibility.
5.Wide Applications
Commonly used in oil and gas pipelines, chemical plants, power generation, water treatment, and industrial manufacturing due to their strength and reliability.
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