Free-cutting steel has good processing performance and can ensure better surface quality of processed parts. It is widely used in various industries, such as automobiles, home appliances, machinery, precision instruments, etc.

Guiyang special steel has been engaged in the research and development and large-scale production of free-cutting steel since the 1980s. It was the first in China to achieve full coverage of high, medium and low carbon series products and the development of lead-free composite high-quality free-cutting steel products, breaking the monopoly of imported high-end free-cutting steel products on the domestic market. Many products and production technologies are first launched in China, among which the process technology of continuous casting of small square billets to produce composite free-cutting steel billets and achieving the international leading level without grinding to meet the requirements of downstream use.