Aluminized Coating is the way of coating method.

Oxygen steel tube with a heat treatment process, characterized in that oxygen blowing tube in addition to conventional degreasing, pickling, washing, fluxing, drying, liquid aluminum hot-dip, but also for aluminizing diffusion annealing, in order to achieve aluminized layer thickness ≥ 0.2 mm, and then test gas, car wire, phosphoric acid wash, and then the coating and porcelain, and its coating has extraordinary formula. Process by which oxygen blowing tube aluminized coating high temperature corrosion resistance can greatly increase the coating firm not falling, effectively improved the oxygen blowing tube life, can save steel, saving time for management to improve the wind oxygen efficiency, reduce labor intensity.

Oxygen steel tube with a heat treatment process, characterized in that oxygen blowing tube in addition to conventional degreasing, pickling, washing, fluxing, drying, liquid aluminum hot-dip, but also for aluminizing diffusion annealing, to infiltration aluminum layer thickness ≥ 0.2 mm, and then test gas, car wire, phosphoric acid wash, and then the coating and porcelain

That is  aluminized coating process