What is the minimum operating temperature below which Type F steel pipe must not be used for refrigerating lines?

Type F steel pipe is specifically designed for applications involving refrigerants, and it has critical temperature constraints to ensure safety and efficiency. The minimum operating temperature for Type F steel pipe is established to prevent issues such as brittleness and structural integrity loss at lower temperatures.

Since Type F steel pipe is not recommended for refrigerating applications below -20 degrees Fahrenheit, this temperature threshold is essential. Operating below this minimum could lead to significant risks such as pipe failure or leaks, as the materials might not perform effectively in extremely cold conditions. Therefore, -20 degrees Fahrenheit is the correct minimum operating temperature for Type F steel pipe, ensuring that the systems utilizing this pipe maintain functionality and safety under typical refrigerating conditions.