By changing the cooling rate after heating, we have realized versatility to normalize, anneal or heat refine a wide range of steels including from SNCM to SCR, SC and SCM. With our abundant know-how and experience appreciated, we have highly praised records of manufacturing such furnaces. For IA furnaces, we have achieved a decarburization of less than 10/100 through the adoption of an optimal atmosphere gas. In addition to operational flexibility to alter processing conditions for each work with the tray basket system, little chance of foreign material contamination or incurring dents is their another advantageous characteristic. Unmanned operation during the night is available with optional stock table.