Schedule 80 Pipe

Schedule 80 Pipe Thickness in mm, Dimensions & Pipe Chart

Schedule 80 Pipe is one of the most widely used heavy-wall piping solutions for industrial, commercial and high-pressure applications. Compared to Schedule 40 pipe, Schedule 80 features a thicker wall, allowing it to withstand higher internal pressure while providing improved durability and mechanical strength.

Whether you are searching for schedule 80 pipe thickness in mm, sch 80 pipe dimensions, 80 NB pipe dimensions, 2 inch schedule 80 pipe thickness in mm, or looking to understand the difference between Schedule 40 vs Schedule 80, this guide provides complete information including dimensions, thickness charts, weight tables, applications, materials and buying recommendations.

Schedule 80 pipes are manufactured in carbon steel, stainless steel, alloy steel, PVC, CPVC and UPVC materials according to international standards including ASME B36.10M and ASME B36.19M.

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Schedule 80 Pipe is a standardized pipe wall thickness classification defined by the American Society of Mechanical Engineers (ASME). The word "Schedule" refers to the wall thickness of a pipe rather than its outside diameter.

A Schedule 80 pipe has a significantly thicker wall than Schedule 40 pipe while maintaining the same outside diameter (OD). The increased wall thickness enables the pipe to handle higher operating pressures, making it suitable for demanding industrial environments.

Schedule 80 piping is commonly used in oil & gas, chemical processing, power plants, pharmaceutical facilities, marine industries, fire protection systems, pressure piping, and process engineering applications.

SCH stands for Schedule, which is the standardized designation used to define pipe wall thickness.

The schedule number does not represent the outside diameter. Instead, it indicates the wall thickness relative to the pipe size. As the schedule number increases, the wall thickness generally becomes greater.

The following chart shows standard Schedule 80 pipe thickness in mm according to ASME B36.10M and ASME B36.19M. Schedule 80 pipes have the same outside diameter as Schedule 40 pipes but feature thicker walls, allowing them to withstand higher operating pressures and demanding industrial applications.

These Schedule 80 pipe dimensions are widely used for carbon steel, stainless steel, alloy steel, PVC, CPVC, and UPVC piping systems. Always verify the required dimensions and pressure ratings with the applicable ASME standard before selecting a pipe for your application.

The Schedule 80 pipe dimensions chart provides the standard outside diameter (OD), approximate inside diameter (ID), and wall thickness for commonly used pipe sizes. While Schedule 80 pipes have the same outside diameter as Schedule 40 pipes, their thicker walls reduce the inside diameter and provide higher pressure handling capability.

These Schedule 80 pipe dimensions are based on ASME B36.10M and ASME B36.19M standards and are commonly used for carbon steel, stainless steel, alloy steel, PVC, CPVC, and UPVC piping systems across industrial, commercial, and high-pressure applications.

The 2 inch Schedule 80 pipe is one of the most commonly used heavy-wall pipe sizes for industrial applications requiring higher pressure resistance. It is widely used in chemical processing plants, oil & gas facilities, power plants, compressed air systems, water treatment plants, and process piping systems. According to ASME standards, a 2 inch Schedule 80 pipe has an outside diameter of 60.3 mm and a wall thickness of 5.54 mm.

Due to its thicker wall construction, the 2 inch Schedule 80 pipe offers greater strength and pressure-handling capability than Schedule 40 pipe while maintaining the same outside diameter.

Many engineers, contractors, and buyers search for 80 NB to inch or DN80 to inch when selecting industrial piping. In standard pipe sizing, 80 NB (Nominal Bore) is equivalent to a 3 inch pipe. Although the nominal bore is 80 mm, the actual outside diameter is standardized according to ASME pipe dimensions.

80 NB = 3 Inch Pipe

The standard conversion details are given below:

• DN80 ≈ 3 Inch
• 80 NB Outside Diameter (OD) = 88.9 mm
• Schedule 80 Wall Thickness = 7.62 mm
• Approx. Inside Diameter (ID) = 73.7 mm

This conversion is commonly used for carbon steel, stainless steel, alloy steel, PVC, CPVC, and UPVC Schedule 80 piping systems.

The following table shows the standard dimensions for an 80 NB Schedule 80 pipe. These dimensions are based on ASME B36.10M and ASME B36.19M standards and are widely used in industrial piping systems.

The 80 NB Schedule 80 pipe is commonly used in high-pressure piping applications across oil & gas, petrochemical, power generation, water treatment, and process industries due to its heavy wall construction and excellent mechanical strength.

The 80 NB pipe weight depends on the material grade, wall thickness, manufacturing process, and applicable tolerances. Since 80 NB is equivalent to a 3-inch nominal pipe size, the weight per meter varies slightly between carbon steel and stainless steel pipes. The following values are approximate and may differ based on the relevant ASTM or ASME standard.

The difference between Schedule 40 and Schedule 80 pipe lies primarily in the wall thickness. Both schedules have the same outside diameter for a given nominal pipe size, but Schedule 80 has a thicker wall, making it stronger and capable of handling higher operating pressures. Due to its increased thickness, Schedule 80 is also heavier and is commonly selected for high-pressure and demanding industrial applications.

Schedule 80 PVC pipe is widely used in industrial piping systems that require higher pressure resistance than Schedule 40 PVC. While both schedules have the same outside diameter, Schedule 80 PVC features a thicker wall for improved strength, durability, and long-term performance in demanding applications.

Common Available Sizes

UPVC, CPVC, and PVC Schedule 80 pipes are selected based on operating temperature, chemical compatibility, and fluid handling requirements. These materials offer excellent corrosion resistance, making them suitable for water supply, chemical processing, and industrial piping systems.

Schedule 80 pipes are widely used in industries requiring reliable performance under high pressure, elevated temperatures, and demanding operating conditions. Their thick wall construction and superior mechanical strength make them ideal for transporting liquids, gases, steam, and chemicals.

The thicker wall construction of Schedule 80 pipe provides several performance benefits over lighter pipe schedules. It offers higher pressure handling capability, increased durability, and excellent resistance to mechanical stress, making it a preferred choice for critical industrial piping systems.

Schedule 80 pipes are manufactured according to internationally recognized ASTM and ASME standards, ensuring consistent dimensions, wall thickness, pressure performance, and material quality for industrial applications.

Schedule 80 pipe offers significantly higher pressure resistance than Schedule 40 because of its thicker wall construction. However, the exact pressure rating depends on pipe size, material grade, operating temperature, and the applicable design code.

Schedule 80 pipes are manufactured in a wide range of nominal pipe sizes to meet the requirements of industrial piping systems. The table below shows the standard Nominal Bore (NB) and corresponding inch sizes commonly available for carbon steel, stainless steel, alloy steel, PVC, CPVC, and UPVC Schedule 80 pipes.

Schedule 80 pipes are available in various manufacturing methods and material grades to meet the requirements of different industrial applications. The selection depends on operating pressure, temperature, corrosion resistance, and project specifications.

Schedule 80 pipes are available in a variety of surface finishes to suit different industrial environments, corrosion resistance requirements, and aesthetic preferences. The appropriate finish depends on the material grade and intended application.

Schedule 80 pipes are supplied with different end preparations to suit various installation methods, including welding, threading, and mechanical connections.

Every Schedule 80 pipe undergoes rigorous inspection and testing to ensure compliance with ASTM, ASME, and customer specifications. These quality control procedures verify dimensional accuracy, mechanical properties, and overall product integrity before dispatch.

All Schedule 80 pipes are securely packed to prevent damage during storage and transportation. Export shipments are prepared using international packaging standards for safe worldwide delivery.

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