Baosteel is a oriented silicon steel material.

Baosteel Co., Ltd.'s high-grade grain-oriented silicon steel is Baosteel Co., Ltd.'s core strategic variety and one of Baosteel Co., Ltd.'s green products. It is widely used in the manufacturing of various types of transformers. In the past ten years, Baosteel Co., Ltd.'s grain-oriented silicon steel has gradually broken the international monopoly and strongly supported the localization of domestic UHV products.

Grain-oriented silicon steel, also known as cold-rolled transformer steel, is an important ferrosilicon alloy used in the transformer (core) manufacturing industry. Its production process is complex and the manufacturing technology is strict. It is mainly divided into common oriented silicon steel (CGO) and high magnetic induction oriented silicon steel (HiB). Grain-oriented silicon steel was first discovered by N. P. Goss in the United States in 1930.