Seam-annealing systems built by SMS Elotherm, for tube diameters from 3 to 24 inches, provide perfect seam annealing thanks to optimally controlled power distribution matched to the tube speed. Speeds adjusted to suit the welding process, optimal frequency selection, process data monitoring and management ensure a uniform, homogeneous seam with continuous precision. The ELOMAT frequency converters developed and manufactured by Elotherm guarantee high levels of reliability due to accurate adaptation to the requirements