Pressure cast lined steel pipes comprise an annular concrete or mortar liner along an inside diameter, and a metal shell surrounding the liner, wherein the liner is in direct contact with the metal shell. The digital to analog conversion is controlled by a control signal and a power control signal, the control signal having a frequency twice the frequency of the radiofrequency transposition signal. The method continues by moving the substrate assembly andor the polishing pad with respect to the other to rub at least one of the substrate assembly and the planarizing surface against the other at a relative velocity. The transition optionally includes communicating a state of the computer program from the server to the client. They are produced from the lightweight aggregate in granulate form, having a residual expanding agent content of at least 0. The user floats in a high-density suspension liquid maintained at the user’s body temperature while consuming the interactive content which can provide audio, video and tactile inputs to the user.