Quenching box (TMT) is used to cool down the steel quickly below its critical temperature during the quenching process. This process hardens the steel, enhancing its toughness and strength. Before being quenched in water or oil, the steel is first heated to a temperature above its critical temperature. The quenching procedure makes the steel brittle and hard. Hot rolling mill facilities for rebar goods employ quenching box (TMT) systems to apply pressured water via unique nozzle systems to boost strength and hardness of manufacturing. It is demanded in the market for its high efficiency, smooth functioning and easy handling.