Our process flow is as follows

1 Material Selection: Chrome vanadium steel which has been made into propeller in advance is generally used as the metal material for making sleeve.

2 Forging process forging (cold pier, red stamping/hot forging)

3 CNC center: through lathe, car wash, finishing, word pressing, knurling and other processes.

4 Surface treatment: choose sandblasting to get (matte) texture, choose grinding to get (mirror) texture.

5 Heat treatment: The purpose of heat treatment is to improve the mechanical properties of materials and make parts more practical.

6 Electroplating: Electroplating mainly plays a role in protecting the metal materials inside the metal products, greatly reducing the possibility of oxidation of the sleeve.