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TMT bars or Thermo-Mechanically Treated bars are high-strength reinforcement bars having a tough outer core and a soft inner core. The first step of the manufacturing process involves formation of billet through Continuous Casting Machine (CCM). CCM is a process of casting metal into billet which can be further shaped into suitable products. At Rana MAX we believe in being a class apart, we have a well-equipped integrated plant that produces billets, in – house and thereafter the process of making TMT begins. The TMT is passed through quinching and tempered process. While passing the TMT through the quinching and tempered process, the water pressure is optimised. The sudden quenching and drastic change in temperature toughens the outer layer of the TMT bar, thus making it super tough and durable.

Once this process is over, the TMT bars are subject to atmospheric cooling. This is done in order to equalise the temperature difference between the soft inner core and the tough exterior. Once the TMT bar cools down, it slowly turns into a ferrite-pearlite mass. The inner core remains soft giving the TMT bar great tensile strength, shock absorbing resistance and elongation point. This design is unique to the TMT bars and gives superior ductility to the bars. Also, this unique manufacturing technology of V Rib and the absence of Cold stress makes this bar corrosion-resistant and also boosts its weldability.