● Schedule 20 steel pipe is a type of pipe defined by its wall thickness and diameter, specifically designed for low-pressure applications.
● It features a thinner wall compared to other schedules, such as Schedule 40 and Schedule 80, making it lightweight and costeffective.
● Commonly used in applications that involve the transfer of lowpressure fluids and gases, such as water supply and HVAC systems.
● Due to its structural characteristics, Schedule 20 pipe is often utilized in residential and commercial plumbing, as well as in decorative and non-structural applications.
Specifications of Schedule 20 Pipe
Diameter and Size
Schedule 20 pipes are available in diameters ranging from DN 200 to DN 900, corresponding to sizes 8 to 36 inches.
Wall Thickness
The wall thickness of Schedule 20 pipes varies from 6.35 mm to 12.70 mm, designed for lowpressure applications.
Length
Typically, Schedule 20 pipes come in lengths of 12 meters, allowing for extensive runs without joints.
Surface Treatment
These pipes can be cold rolled and are available in various forms including seamless, ERW, welded, and fabricated.
Benefits of Schedule 20 Carbon Steel Pipe
• Low Cost: Schedule 20 carbon steel pipes are less expensive compared to thicker schedules like Schedule 40 and 80, making them an economical choice for various applications.
• Ease of Handling: The lighter weight of Schedule 20 pipes facilitates easier handling and installation, which is advantageous for construction and plumbing projects.
• Suitable for Low-Pressure Applications: Designed for low-pressure and average mechanical pressure settings, these pipes are ideal for transporting low-pressure fluids and gases.
• Corrosion Resistance: Schedule 20 carbon steel pipes can be treated for corrosion resistance, enhancing their longevity and performance in various environments.
• Environmental Benefits: The reduced material usage in Schedule 20 pipes contributes to lower environmental impact during manufacturing and installation.
Understanding Pipe Dimensions and Weight
Dimensions of Schedule 20 Pipes
● Nominal sizes range from 8 inches to 36 inches.
● Wall thickness varies from 6.35 mm to 12.70 mm depending on the diameter.
● Outside diameter (OD) increases with nominal size, e.g., 8" OD is 219.1 mm.
Weight of Schedule 20 Pipes
● Weight per meter ranges from 33.32 kg for 8" to 289 kg for 36".
● Weight per foot also varies, with 8" weighing approximately 23 lb/ft.
● Weight considerations are crucial for installation and structural support.
Pressure Ratings and Thickness
Pressure Rating Overview
Schedule 20 pipes are designed for low-pressure applications, typically rated for a maximum pressure of 150 PSI. This makes them suitable for systems that do not require high strength or pressure tolerance.
Wall Thickness Details
The wall thickness of Schedule 20 pipes generally ranges from 0.065 to 0.500 inches, depending on the diameter. This thinner wall construction facilitates lighter weight and easier handling.
Applications
Common applications include water distribution, gas lines, and other low-pressure fluid transport systems. Their lighter weight and lower cost make them ideal for non-structural uses.
Schedule 20 Steel Pipe Advantage
Advantages of Schedule 20
● Lower pressure rating suitable for low-pressure applications, making it ideal for residential and decorative uses.
