At present, the domestic products of granite gang-saw blades are rolled by used rails, the organization of this products always have internal process of production, they are easily to break off or bring about deflection and slack of tension, leading to a stop or replacement of blades and other granite gang-saw blades are rolled by refining steel billets(C70)and developed by the technology of cold treatment, which is exact in thickness and width, excellent in mechanical properties such as wear-resistance and high tensile strength, , the synthetic properties of our products can compare favorably with other similar products in abroad.Using the blades of our company, it will be safer, more efficient, more reliable of mechanical properties and lower the cost of production.