Nucor Steel Marion Inc. of Marion, Ohio, granted SMS group the final acceptance certificate for the supplied walking-beam furnace after successful commissioning. The furnace, which went into service in the existing bar mill, is capable of delivering 120 short tons per hour of hot billets at 2255°F (1235°C). The NOx content of this furnace is close to 25 parts per million, making it the most energy-efficient furnace with the lowest emission values within Nucor.

The furnace was designed according to specific pre-fabrication methods and features proprietary SMS ZEROFlame burners. In addition, scale loss measures less than 0.5% in weight, compared with the 0.75% guaranteed.