Schedule 80 Stainless Steel Pipe Dimensions: A Comprehensive Guide
Introduction to Schedule 80 Stainless Steel Pipe Dimensions
When it comes to industrial piping, Schedule 80 stainless steel pipe dimensions are critical for engineers, contractors, and manufacturers. Schedule 80 (Sch80) refers to a specific wall thickness standard for pipes, as defined by the American National Standards Institute (ANSI) and the American Society of Mechanical Engineers (ASME). Stainless steel pipes with Schedule 80 specifications are widely used in high-pressure applications, such as oil and gas, chemical processing, and water treatment systems, due to their durability and corrosion resistance.
In this article, we’ll explore the dimensions of Sch80 stainless steel pipes, how to read a pipe dimension chart, and how to find the wall thickness (in mm) using a standard reference table.
What Are Sch 80 Stainless Steel Pipe Dimensions?
Sch80 stainless steel pipes adhere to the ASME B36.10M and B36.19M standards, which specify the nominal pipe size (NPS), outside diameter (OD), and wall thickness for pipes. The “Schedule” number (e.g., Sch80) indicates the wall thickness of the pipe, with higher numbers corresponding to thicker walls. Sch80 pipes have a thicker wall than Sch40 pipes, making them suitable for high-pressure and high-temperature environments.
Here are some key points about Schedule 80 stainless steel pipes:
- Material: Stainless steel (e.g., 304, 316 grades) for corrosion resistance.
- Applications: Used in industries like petrochemical, marine, and food processing.
- Wall Thickness: Schedule 80 pipes have a specific wall thickness for each nominal pipe size, which is thicker than Sch 40 but thinner than Sch 160.
Understanding the dimensions of Schedule 80 stainless steel pipes ensures proper selection for your project, preventing issues like leaks or pipe failure under pressure.
How to Find Schedule 80 Stainless Steel Pipe Wall Thickness (mm)
To determine the wall thickness of a Sch 80 stainless steel pipe, you can refer to a standard pipe dimension chart, such as the one provided in ASME B36.10M and B36.19M. These charts list the nominal pipe size (in inches or DN), outside diameter (in mm), and wall thickness (in mm) for various schedules, including Sch 80.
Below, we’ll walk you through how to use a sample pipe dimension chart to find the Sch 80 wall thickness for a specific pipe size.
Step 1: Identify the Nominal Pipe Size (NPS)
The nominal pipe size (NPS) is the standard size designation for pipes, typically given in inches (e.g., 1/8″, 1/2″, 2″, etc.) or as a DN (diameter nominal) value in millimeters (e.g., DN6, DN15, DN50). For example, a 2-inch pipe corresponds to DN50.
Step 2: Locate the Sch 80 Column
In a pipe dimension chart, find the column labeled “Sch80.” This column will list the wall thickness (in mm) for each nominal pipe size under the Schedule 80 specification.
Step 3: Match the NPS to the Sch 80 Wall Thickness
Once you’ve identified the NPS and the Sch80 column, locate the corresponding wall thickness value. For instance, for a 2-inch (DN50) pipe under Sch80, the wall thickness might be listed as 5.54 mm.
Example: Using a Pipe Dimension Chart to Find Schedule 80 Wall Thickness
Let’s use the provided chart (ASME B36.10M, B36.19M Steel Pipe Dimensions – ANSI Standard) to find the Sch 80 wall thickness for a few pipe sizes. The chart includes columns for nominal pipe size (inch/DN), outside diameter (OD in mm), and wall thickness for various schedules, including Sch 80.
Here’s how to read the chart:
- For a 1/2-inch (DN15) Pipe:
- Look at the row for 1/2-inch (DN15).
- Find the “Sch 80” column.
- The wall thickness is 3.73 mm.
- For a 2-inch (DN50) Pipe:
- Look at the row for 2-inch (DN50).
- Find the “Sch80” column.
- The wall thickness is 5.54 mm.
- For a 6-inch (DN150) Pipe:
- Look at the row for 6-inch (DN150).
- Find the “Sch 80” column.
- The wall thickness is 10.97 mm.
- For a 12-inch (DN300) Pipe:
- Look at the row for 12-inch (DN300).
- Find the “Sch80” column.
- The wall thickness is 17.48 mm.
This method allows you to quickly find the Sch 80 wall thickness for any pipe size listed in the chart. If a value is missing (e.g., marked with a dash “–”), it means the Sch 80 specification may not be applicable or commonly used for that pipe size, and you may need to consult a more detailed standard or manufacturer’s catalog.
Why Sch 80 Stainless Steel Pipes Are Preferred
Sch80 stainless steel pipes offer several advantages:
Firstly Strength: The thicker wall provides greater resistance to pressure and mechanical stress.
Secondly Corrosion Resistance: Stainless steel ensures longevity in corrosive environments.
Additionally Suitable for a wide range of applications, from plumbing to industrial systems.
When selecting a pipe, always consider the operating conditions (pressure, temperature, and medium) and ensure the Sch80 dimensions meet your requirements.
Conclusion
Understanding Sch 80 stainless steel pipe dimensions is essential for selecting the right pipe for your project. By using a standard pipe dimension chart, such as the one provided in ASME B36.10M and B36.19M, you can easily find the wall thickness (in mm) for any Sch80 pipe size. Whether you’re working on a high-pressure system or a corrosive environment.
Sch80 stainless steel pipe dimentions free read and download here: ASME B36.10M,36.19M-Dimensions or asme.org