The hollow shaft product has the advantages of light, strong intensity, shock absorption, anti-fatigue. With the development of hollow shaft manufacturing technology and product, it can be precisely forged to shape hollow drive shaft (half-axis), power steering column, Hollow balance lever transmission air drive shaft, with inner spline drive shaft, fs shaft, rear axle hollow shaft (truck), etc.. It can be widely used in construction machinery, heavy-duty cars, railway industries, aircraft manufacturing, medical technology, Military and other industries.