20MM SRMB TMT BARS

Product Description

Thermo-Mechanically Treated Bars (TMT Bars),are Extra High Strength Reinforcing bars whichreplaced any form of cold twisting, the technologyof yesteryears. In this process, the steel TMT barsreceive a short, intensive cooling as they passthrough the specially designed Tempcore WaterCooling System after the last Rolling Mill Stand.The sudden quenching converts the surface layerof the steel bar to a hardened structure.This phase of intensive cooling by the TempcoreSystem is followed by further cooling in atmosphere,so that the temperature between the core (which issteel hot) and the cooled surface layer is equalized,and the surface layer gets tempered by the heatfrom the core. The resulting structure is a temperedmartensite zone at the periphery and a fine grainferrite pearlite structure in the central zone.