This is Hot Rolled Steel in H or I shaped. These are also known as I beam or Universal Beam and H Beam or Universal Column. These are basically used as support members in fabrication and erection of steel structures. They are weldable and have good mechanical properties for the intended use.

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Size Grade
100 X 50 MM, 125 X 65 MM, 150 X 75 MM, 175 X 85 MM, 200 X 100 MM, 250 X 125 MM, 300 X 140 MM, 350 X 140 MM, 400 X 140 MM, 450 X 150 MM, 500 X 180 MM, 600 X 210 MM MS, IS:2062

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I - BEAM : It is represented by dimensions of Web & Flange. For e.g. 150x75 beam means,Width of Web = 150mm, Width of Flange = 75mm

H - BEAM : In H-Beam generally the sizes of the Web & Flange are almost equal. When we say, 254 x 254 beam means Web = 254mm & Flange = 254mm.