Iron and steel smelting

It has been confirmed by archaeological evidence that iron, made from melting pig-iron, was developed in ancient China in the early 5th century BC during the Zhou Dynasty (1050 BC－256 BC). During the Shang Dynasty (1600 BC－1046 BC) to the Eastern Zhou Dynasty (1050 BC－256 BC), China went into a flourishing period for steel smelting. In the Han Dynasty (202 BC－220 AD), private-enterprise iron-making was abolished and was monopolized by the state, creating an iron-smelting bloom. The first famous metallurgist in ancient China is Qiwu Huaiwen of the Northern Wei Dynasty (386－557 AD), who invented the process of using wrought iron and cast iron to make steel.