A seamless tube producing method uses a piercingrolling plug wherein piercingrolling is performed with an inclined rotary piercing mill while the seamless tube piercingrolling plug is used as a piercing tool. The inclined separating surface holds leading edges of sheets stacked on a sheet holder. The mobile device transmits a first signal strength to a first antenna for a first receive signal strength and a second signal strength to a second antenna for a second receive signal strength. The input sampling stage asynchronously samples the encoded signal at the frequency of the over-sampling clock and a produces a stream of pulse samples. An interface module recombines each data signal with its associated clock signal. The base generates high frequency AC power that is transferred by a primary coil to as secondary coil maintained by the vessel.