I Beam is a structural section on which the flanges are tapered and are typically not as long as the flanges on wide-flange beams. The flanges are thicker at the cross sections and thinner at the toes of the flanges.

Galvanized I-beam, also known as steel beam, is a section shape of long steel. It is divided into ordinary steel, light steel and H-beam steel. Common beam and beam of the wing root to edge thinning, has a certain Angle, ordinary beam and beam model is to use the high waist centimeters Arabic Numbers, web and flange and the thickness of the flange width different specifications to waist high (h) * waist leg width (b) (d) says the number of blessing, such as "sewing worker 160 x 88 x 6", said the waist is 160 mm high, The width is 88mm, with 6mm ordinary beam thickness of the leg.

I Beam (or H beams) are the middle beams of the wall that connect 2 bays together.

Hot Dipped Galvanised is far better than painted steel, hot dipped galv will last a lifetime compared to normal painted steel.

When you use hot dipped galvanized steel Sydney you can put it straight into the ground with out any prep or paint.