In a pressure pipe $A-B$ with an actual $($inside$)$ diameter of $255$ mm $,$ the pressure at point $A$ is $345$ kPa and water flows from $A$ to $B.$ The height of the pipe at point $A$ is $30$ m $,$ and head loss due to friction between points A and $B$ is $80$ kPa $.$ If the height of the pipe at point $B$ is $18$ m $,$ calculate the pressure at that point.