Construction includes new construction, repair and replacement. Construction is one of the most important steel-using industries .Buildings – from houses to car-parks to schools to skyscrapers ,dam construction, tunnels, bridges, refineries and processing plants. Trio steel meets the most stringent strength requirements demanded by this industry. Skyscrapers are made possible by steel. The
housing and construction sector is the largest consumer of steel today, using around 50% of world steel production.
In 1937, 83,000 tons of steel was used to build the Golden Gate Bridge in San Francisco. Today, only half of that amount would be required. Steel sheets can also be used for the raised floors and false ceilings used in modern office buildings, and provide versatile partitioning systems.