Manufactured from coiled alloy powder with strip steel. Divided into categories such as silicon calcium core wire, silicon manganese calcium wire, silicon calcium barium wire, barium aluminum wire, aluminum calcium wire, calcium iron wire, pure calcium wire, etc., depending on the type of alloy powder. The core wire enhances the absorption rate of smelting materials, widely used as deoxidizing agent, desulfurizing agent, and alloy additive, effectively improving the quality of steel casting products.