lines about iron pillar
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Iron pillar
The iron pillar of Delhi is a structure 23 feet 8 inches (7.2 metres) high with 16 inches diameter that was constructed by a "King Chandra", probably Chandragupta II (reigned).It is famous for the rust-resistant composition of the metals used in its construction.
The pillar was manufactured by the forge welding of pieces of wrought iron. Balasubramaniam of the IIT Kanpur explains how the pillar's resistance to corrosion is due to a passive protective film at the iron-rust interface.
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It was build in Gupta period.It shows that is exposed to sun and rain for many years that shows the mastery in art. This pillar was built by king Chandra and it is built in Delhi
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