20mm Srmb Tmt Bars

Thermo-Mechanically Treated Bars (TMT Bars),
are Extra High Strength Reinforcing bars which
replaced any form of cold twisting, the technology
of yesteryears. In this process, the steel TMT bars
receive a short, intensive cooling as they pass
through the specially designed Tempcore Water
Cooling System after the last Rolling Mill Stand.
The sudden quenching converts the surface layer
of the steel bar to a hardened structure.
This phase of intensive cooling by the Tempcore
System is followed by further cooling in atmosphere,
so that the temperature between the core (which is
steel hot) and the cooled surface layer is equalized,
and the surface layer gets tempered by the heat
from the core. The resulting structure is a tempered
martensite zone at the periphery and a fine grain
ferrite pearlite structure in the central zone.