(1) Increasing the level and the use of continuous casting of stainless steel smelting tube present, continuous casting of steel has basically adopted, vertical and curved continuous casting machine in the main. Stainless steel billet and the traditional ingot - Bloom compared to good quality slab, a direct rolling, the metal recovery rate increased by 10% to 15%, saving energy and reducing production costs. Some of stainless steel in the casting process easily oxidized alloying elements, easy to produce oxide inclusions; In addition, the viscosity of molten steel can easily lead to nozzle clogging. As more complex forms of solidification of stainless steel, poor thermal conductivity of molten steel, billet easy to crack, so the casting slab speed of cooling and more stringent requirements; In addition, the use of the tundish heating, no oxidation protection of casting, electromagnetic mixing and automatic control of liquid level and a series of new technologies, thus making greatly improved the quality of billet. Casting of steel is difficult for some species, such as titanium stainless steel, single-phase austenitic stainless steel and martensitic stainless steel casting can be successfully expanded the range of stainless steel billet.