4 pipe at 180 holds how many btus?

The BTU capacity of a 4-inch pipe at 180 degrees Fahrenheit depends on several factors, including the type of fluid being transported and the flow rate. However, assuming it's water, the approximate capacity can be calculated using the formula for water flow in pipes. Generally, a 4-inch pipe can carry around 250-600 BTUs per foot, depending on the flow rate and temperature. For precise calculations, it's best to refer to specific engineering tables or software.