There are several things that are to be noted while selecting a TMT bar. The criteria are Grade, flexibility, maximum extent of elongation, corrosion resistance. In case with the grade, the grades are Fe-415,Fe-500,Fe-550,Fe-600.more the grade is ,higher the quality will be. The second criteria is the flexibility, one needs to check how flexible it is to withstand stress for years. The maximum extend of elongation indicate show how ductile the bars are that will last longer. In real time, TMT will come in to contact with moisture, so corrosion resistance is must or else they won’t last long. And also check for the naked eye test at the bar seal at every meter of it. TMT bars in trichy from raja steel ensures all these criteria.