To avoid rust on rods stored outside is difficult particularly if humidity is high.
Rods for Plating Quality wires can admit some degree of rust, it can be removed prior and during drawing.
1.-A good Descaling System ( Mechanical or Chemical).
2.-An attachment after the last drawing die that removes lubricant and leave a bright finish.
3.- Leave the last die without lubricant.
4.- Use the carrier and lubricant adecuate for plating quality