The traditional hydraulic power steering system relative to its relevant parts, such as: steering yoke, sleeve lock, spline tubes,pinion, etc. is not very high quality requirements. The electronically controlled power steering system (hereinafter referred to EPS-Electronic Control Power Steering), ESP steering is relatively high requirements of its related parts, only the cold forging products can satisfy the strength requirements. Forging products produced by our company in full satisies the strict requirements.