Schedule 40 Steel Pipe

What is Schedule 40 Steel Pipe?

Schedule 40 steel pipe is a type of steel pipe with a wall thickness that is designed to withstand high-pressure applications. The “schedule” in the name refers to the thickness of the pipe’s walls, with schedule 40 having a relatively thick wall compared to other schedules.

It is commonly used in a variety of industrial applications, including plumbing, construction, and oil and gas transport. The pipe is typically made from carbon steel, which provides good strength and durability. The diameter of schedule 40 steel pipe ranges from 1/8 inch to 24 inches, and it is available in various lengths.

The dimensions of schedule 40 pipes are provided in the below table, and the weight of schedule 40 steel pipes varies based on their size. Typically, the weight per foot of sch 40 pipes is 1.68 lbs. Although each pipe has its own advantages, schedule 40 pipes are known for their thinner walls, making them suitable for applications with low water pressure. It’s essential to ensure that the dimensions of schedule 40 pipes match your application’s requirements since the pipe’s strength is only as good as its weakest point. Any change in pressure can significantly impact its performance.

The below table provides information on sch 40 pipe dimensions, including the thickness. In the past, the dimensions for schedule 40 steel pipes were divided into three sections based on pipe size: standard weight (STD), extra strong (XS), and double extra strong (XXS). Although these classifications were expected to be phased out by suppliers, they are still widely used. DN is a dimensionless specification indirectly related to the diameter, as defined by ISO 6708. Therefore, DN does not directly correspond to the size or thickness of schedule 40 pipes in millimeters. Initially, NPS values were given the same inside diameter, but as the thickness of schedule 40 pipes evolved, the inside diameter changed, and NPS became indirectly related to the inside and outside diameters. Our company has been producing schedule 40 pipes dimensions in millimeters for generations, customizing them to fit specific application requirements.

The weight of schedule 40 pipes varies based on the amount of metal used and the thickness of the wall. It is important to ensure that the sch 40 pipes dimensions meet the requirements of your application, as the pipes are only as strong as their weakest point, and even a slight difference in pressure can affect their performance.

SCH 40 Pipe Dimensions

Schedule 40 Pipes Thickness & Weight Chart

Schedule 40 Pipes Pressure Rating

Chemical Composition of Schedule 40 Steel Pipe

The chemical composition of this steel may vary depending on the type and weld, but as an example, seamless weld type S A53 steel may have the following composition:

• Carbon – 0.25% (max)
• Manganese – 0.95% (max)
• Phosphorous – 0.05% (max)
• Sulfur – 0.045% (max)
• Copper – 0.4% (max)
• Nickel – 0.4% (max)
• Chromium – 0.4% (max)
• Molybdenum – 0.15% (max)
• Vanadium – 0.08% (max)

Schedule 40 Pipe Grades

• ASTM A53 Grade A and B : This is the most commonly used grade for schedule 40 steel pipes. It is made from low carbon steel, and its chemical composition includes carbon, manganese, phosphorus, sulfur, copper, nickel, chromium, and molybdenum. It has good strength and ductility and is suitable for a wide range of applications.
• ASTM A106 Grade B : This grade of steel pipe is made from carbon steel and is commonly used for high-temperature applications. Its chemical composition includes carbon, manganese, phosphorus, sulfur, silicon, chromium, and copper.
  
• API 5L Grade B : This grade is made from carbon steel and is commonly used in the oil and gas industry for transporting fluids and gases. Its chemical composition includes carbon, manganese, phosphorus, sulfur, silicon, and copper.
• ASTM A333 Grade 6 : This grade is made from low alloy steel and is commonly used for low-temperature applications. Its chemical composition includes carbon, manganese, phosphorus, sulfur, silicon, nickel, and chromium.
• ASTM A500 Grade B : This grade is made from carbon steel and is commonly used for structural applications such as in building construction. Its chemical composition includes carbon, manganese, phosphorus, sulfur, and copper.
  It is important to select the appropriate grade of schedule 40 steel pipe based on the specific requirements of the application to ensure optimal performance and longevity.

Schedule 40 Pipe Applications

• Plumbing and Water Distribution : Schedule 40 steel pipes are commonly used for water distribution systems in residential, commercial, and industrial settings. They are suitable for both hot and cold water systems and are preferred for low-pressure applications.
• HVAC Systems : Schedule 40 pipes are used in heating, ventilation, and air conditioning (HVAC) systems for both residential and commercial buildings. They are ideal for the distribution of both hot and cold air.
• Oil and Gas Industry : Schedule 40 pipes are used in the oil and gas industry for transportation of fluids such as crude oil, natural gas, and petroleum products. These pipes are also used in refineries and chemical plants.
• Structural Applications : Schedule 40 pipes are used in construction for structural applications such as supports, beams, and columns.
• Industrial Processes : Schedule 40 pipes are used in various industrial processes such as manufacturing, mining, and material handling.
  
• Fire Protection Systems : Schedule 40 pipes are commonly used in fire protection systems in buildings, as they are durable and can withstand high temperatures.

Overall, the versatility and affordability of schedule 40 pipes make them a popular choice for a wide range of applications in various industries.

Prices for Schedule 40 Steel Pipes