Conax also offers protection tubes in a variety of types and materials. Protection tubes are intended for use in applications where the tube will not be exposed to high pressure of fluid velocities. Pipewells, made from Schedule 40, 80 or 160 pipe, Are the most commonly used form of protection tube. Mounting is generally achieved through a flange or threaded bushing welded to the pipe. Product Literature on our pipewells from pages 66-67 of our catalog .