Roll for molten metal plating bath and method for manufacturing the same

A method for manufacturing a roll for hot-dip metal coating bath having a body with a substantially cylindrical appearance, at least an outer peripheral surface thereof being formed of a ceramic material, and a groove formed on the body so as to cross the rotation axis, comprising:

• the first groove formation step of forming a first groove by rotating the body and irradiating a laser beam on the outer peripheral surface of the body along a first scanning line;
• and
• the second groove formation step of forming a second groove deeper than the first groove by, after said first groove formation step, rotating the body and irradiating the laser beam on the bottom surface of the first groove along a second scanning line,
• the first scanning line and the second scanning line being different from each other in disposition.