The circumferential stress in a material of cylindrical form subjected to internal or external pressure.

The tensile stress, usually in pounds per square inch (psi), acting on the pipe along the circumferential direction of the pipe wall when the pipe contains gas or liquid under pressure.

The circumferential stress imposed on a pipe wall when exposed to an internal pressure load. Usually expressed in PSI.

The force per unit area in the wall of the pipe in the circumferential orientation due to internal hydrostatic pressure.

Hoop stress is mechanical stress applied in a direction perpendicular to the radius of the item in question. Along with axial stress and radial stress, it is a component of the stress tensor in cylindrical coordinates.