Spray type multi station pretreatment is a common equipment for surface treatment. The principle is to use the mechanical erosion to accelerate the chemical reaction to complete the process of degreasing, phosphating and washing. The typical process of spray pretreatment of steel parts is pre degreasing, degreasing, washing, washing and pure water washing. Pre treatment can also use shot blasting machine, suitable for simple structure, serious corrosion, no oil or less oil steel parts. And no water pollution.

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