Abstract: An improved solar panel assembly is provided. The assembly includes a plurality of sub-assemblies which are spaced from one another. Each sub-assembly has at least two torque tubes and a plurality of laterally spaced rails which are coupled with the torque tubes for supporting a plurality of solar panels or reflectors thereon. Rotation of the torque tubes about the lateral axis rotates the solar panels or the reflectors mounted on the rails. At least one torque arm is joined with and extends transversely away from one of the torque tubes of each sub-assembly. A driveshaft extends longitudinally between the sub-assemblies and is moveable in the longitudinal direction for rotating the solar panels or reflectors via the torque arms, the torque tubes and the rails. The torque tubes are generally cylindrical in shape and adjacent torque tubes of each sub-assembly are co-axially joined in an end-to-end relationship with one another.

Abstract: The invention relates to a method and a finishing train for hot-rolling starting material. Starting material is finished in several successive roll stands (110 n) in the finishing train, the material cooling off because of heat loss. The material has to be reheated in order for the temperature of the material not to drop below the predefined lower threshold temperature value at low speeds within and at the discharge end of the finishing train. In order to use as little energy as possible for said reheating process the reheating process within the finishing train is carried out for the first time only when the temperature of the material risks falling below the lower threshold temperature value for the first time relative to the direction of flow of the material because of heat loss.