Duplex Type Pinless Butterfly Valve

Dual-phase steel, also known as complex phase steel, is a steel in which the ferrite phase and austenite phase each account for about half of the solid solution structure. Generally, the content of the minor phase also needs to reach 30%. In the case of low carbon content, the Cr content is 18%~28%, and the Ni content is 3%~10%. Some steels also contain alloying elements such as Mo, Cu, Nb, Ti, and N. Dual-phase steel is widely used in desulfurization systems and seawater desalination systems.