The drawing die is divided into carbide drawing die, diamond drawing die, and diamond drawing die has the advantages of high precision, wear resistance, and disadvantages: difficult processing, difficult recycling, and high price.

Diamond drawing die is suitable for drawing all kinds of metals, it is an ideal product for water tank drawing machine.

Wire drawing is a writing process. This process is completed by the metal wire through the drawing die hole and applying a pulling force to the wire at the exit side of the mold. The wire is contracted and squeezed in the die cavity and gradually becomes thinner. Its speed increases near the exit of the die hole. Because the volume of the wire is constant, the reduction in cross section makes it stretched.