550D or Fe 550D is a grade of Thermo Mechanically Treated (TMT) steelbars, with Fe being the image for the Iron. Iron is the essential metal that the bars are comprised of. '550'denotes the minimum yield pressure in MPa (the tractable pressure expected to create an all-out prolongation) and the letter 'D'denotes malleability. Basically, this implies the way that TMT steel bars of 550D grade have a higher level of rigidity and stretching. Buildings or constructions that require 550D TMT steel bars that are those that bear weighty burdens. Dams, railroad spans, fly-overs, arenas, high rises, airports, industrial designs, wind-factories, ports, medical clinics, burrows, substantial streets shopping centers and multiplexes and other burden bearing constructions fall into this category, and are assembled using 550D TMT steel bars. Why 550D TMT Steel bars? The utilization of 550D TMT steel bars is more common in quake inclined regions since D grade steel is exceptionally impe...