Production method of bathroom hardware shells

A method of producing bathroom or kitchen hardware shells, the method comprising:

• providing a bar having an outer diameter and a length;
• heating the bar to a first temperature for a first time;
• extruding the heated bar to form a hollow blank having a wall thickness;
• forming a semi-finished blank by closing one end of the hollow blank;
• bending the semi-finished blank to have an angle between first and second parts of the semi-finished blank;
• placing the bent semi-finished blank in a bathroom hardware shell shaping die, wherein the bathroom hardware shell shaping die is heated to a second temperature;
• forming a shell by injecting a gas onto or into the bent semi-finished blank, after closing the bathroom hardware shell shaping die, through a gas inlet in the bathroom hardware shell shaping die at a pressure for a second time, which causes the bent semi-finished blank to fit a cavity of the bathroom hardware shell shaping die;
• removing the shell from the bathroom hardware shell shaping die and forming a water faucet hole therein;
• and
• plating an outer surface of the shell with a coating.