Note:                                                                                                                                                                             1.The material can be 16MnCr5, 40Cr, 45#, 42CrMo, 20CrMnTi etc.or according to the customer's requirements                                                                                                                                                                                                                                        

               2.Heat treatment: Nitriding, Carburization and hardening, Quench and temper, Medium and high frequency.