RAJARAM Thermex THT bars are thermo-mechanically treated using German Thermex Cooling Technology in this process the bars are made to pass through a specially designed water cooling system for a specific period of time The outer surface of the bars thus becomes colder while the core remains hot creating a temperature gradient. When the bars are taken out of the cooling system, the heat flows from the core to the outer surface caus tempering, thus giving them a higher yield strength. The GST process anching and Self-Tempering, followed by atmospheric cooling result in the aumente core being converted into a ductile ferrite pearlite core which gives RAJARAM Thermex M greater ductility along with strength it also ensures a low Carbon content