Why should the water droplets inside and outside the cooled galvanized steel pipe be allowed to drain as much as possible?

Because after removing the galvanized steel pipe from the cooling water, it still needs to undergo passivation treatment. If the cooling water attached to the inner and outer surfaces of the galvanized steel pipe is not drained away, much moisture will be carried into the passivating solution, thereby diluting its concentration. When the concentration falls below the specified level in the process, the passivation effect will be reduced. Therefore, before the galvanized steel pipe enters the passivation tank, the moisture attached inside and on the surface of the pipe must be removed.