Forged Duplex A182 F60 Gate Valve

Forged steel gate valve refers to a valve whose gate moves vertically along the centerline of the passage. Forged steel gate valves are mainly used for cutting off in pipelines. Forged steel gate valve is a widely used valve, and it is generally used for cutting devices with a diameter of DN ≤ 50. Forged steel gate valves are quite common.

Duplex stainless steel is a stainless steel in which half of the ferrite phase and half of the austenite phase are present in its solid quenching structure, with a minimum phase content of 30%. Duplex stainless steel is formed by increasing the Cr content or adding other ferrite elements on the basis of 18-8 austenitic stainless steel. It not only has a bi-directional structure of austenite and ferrite, but also saves Ni alloy. Due to the characteristics of the two-phase structure of duplex stainless steel, by correctly controlling the chemical composition and heat treatment process, duplex stainless steel can combine the advantages of ferritic stainless steel and austenitic stainless steel. The presence of austenite in duplex stainless steel reduces the brittleness of Cr ferrite and the tendency for crystal growth, while maintaining excellent toughness and welding performance; The presence of ferrite enhances the yield strength, resistance to intergranular corrosion, and resistance to chloride stress corrosion of austenite.