What wall thickness corresponds to an IPS callout size of 6"-9"?

To determine the wall thickness corresponding to an IPS (Iron Pipe Size) callout of 6"-9", it's essential to understand the standards for wall thickness associated with various pipe sizes in terms of both nominal size and actual dimensions. IPS sizes are defined based on the inside diameter of the pipe, while the wall thickness can vary depending on the specific type of pipe being referenced.

For a pipe with a nominal size of 6"-9", a wall thickness of 5/8" is typically utilized. This thickness is adequate to provide the necessary structural integrity and pressure handling capabilities for pipes that fall within this size range. In practical applications, this thickness also balances the pipe's weight and cost while ensuring compliance with relevant codes and standards.

The other thickness options do not align with the specifications for the IPS callout of 6"-9". A wall thickness of 1/2" or 3/4" would either be too thin or too thick for practical applications in this size range, and 3/8" would not provide sufficient strength to manage pressures encountered in such a pipe. Thus, 5/8" is the most suitable and commonly accepted wall thickness for this IPS size callout.