Stainless steel water tank is divided into cold water tank and hot water tank. The hot water tank is called an insulated water tank. Based on its characteristics of non-leakage, non-corrosion, and seismic reinforcement, it has a wide range of main uses at the level of building water supply systems, and can be applied to construction, municipal construction, geological survey and national defense engineering. At the same level, the main types are domestic water tanks, fire water tanks, storage water tanks and condensate water tanks. The hot water tank is mainly suitable for the expansion tank of the heating system.