In China, we have advanced roller machine for ring which contribute to raw production of slewing bearing, we can provide customers with a plenty of seamless ring billets. The CNC ring rolling program achieves the best quality and repeatability in production. The diverse demands mechanical properties of the ring parts are produced by strictly heat treatment. In addition to normalizing, timing and annealing rings, our process-controlled processes meet all (special) materials and special time-temperature requirements with the highest precision.