What is the symbol for extra strength pipe?

The symbol for extra strength pipe is XXS. This notation indicates that the pipe has an increased wall thickness compared to standard wall pipes, making it suitable for higher pressure applications.

Extra strength pipe (XXS) is commonly used in industries where the materials need to handle more demanding conditions, such as higher pressures and temperatures. The XXS designation helps differentiate it from other types of pipes, providing a clear understanding of its capabilities and intended uses.

In contrast, other designations like XH represent heavier wall thickness but not to the extent of XXS, and XS signifies extra strong but still not as thick as XXS. STD typically denotes standard wall thickness. Understanding these differences is essential for selecting the proper pipe for specific applications.