A Duplex Stainless Steel Tank is a high‑performance water storage vessel made from duplex stainless steel, this dual‑phase structure gives the material higher strength and significantly better corrosion resistance—especially against chloride‑induced pitting, crevice corrosion, and stress corrosion cracking. Because of these properties, duplex stainless steel tanks are ideal for demanding applications such as hot water storage, heat pump systems, commercial water heaters, seawater and brackish water environments, and industrial water systems where aggressive conditions would shorten the life of normal tanks. Compared with traditional tanks, they can often be built with thinner walls while maintaining structural integrity, reducing weight and improving long‑term durability. Duplex stainless steel tanks also typically require no internal linings or sacrificial anodes, leading to lower maintenance and longer service life.