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Hot rolling starts from the process of feeding slabs, blooms or billets into a reheating furnace and heating to a high temperature between 900-1400 °C by burners that use fuels such as by-product gas or LNG. Most of the reheating furnace is controlled using latest on-line instrumentation for least possible fuel consumption and highest productivity.

Heat treatment involves the use of heating or chilling, normally to extreme temperatures, to achieve a desired result such as hardening or softening of the steel. Similar to reheating furnace, various heat treatment furnaces are resorted to on-line instrumentation for better energy saving and higher productivity.