[Class : 6] Rolled Steels; Angle Irons Of Metal; Metal Joists; Beams Of Metal; Railway Material Of Metal; Alloy Steel; Carbon Steel; Iron And Steel; Steel In Sheet, Rod, Bar Or Billet Form; Thermo Mechanically Treated (Tmt) Bars; Common Metals And Their Alloys, Ores; Building Materials Of Metal; Construction Materials Of Metal; Transportable Buildings Of Metal.