This invention relates to a two-way cooling pipe for cooling a die or mold which is used for die casting or a similar forming process. This pipe is a hollow pipe, the interior of which is divided axially by a baffle which provides a forward channel and a backward channel for the cooling water to pass. Cooling of the die is achieved by feeding cooling water to the inside of the die from the forward channel in the cooling pipe which has been inserted in the die from the back thereof, and then removing the cooling water through the backward channel of the cooling pipe.
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