FIELD: metallurgy.
SUBSTANCE: while carrying out the method, the pipes are blown with water vapour, wherein the carboxylic acid water solution is introduced. Then, after cleaning with the carboxylic acid vapour solution, the ethanol water solution is introduced into the water vapor, decomposing as a result of vapour conversion with the hydrogen generation. It is preferable to use formic acid at the preliminary cleaning step. In case of steel products manufacturing from the austenitic grade steels, it is not necessary to passivate its surfaces.
EFFECT: method provides the safe and efficient cleaning of steel products and prevents the risk of steel products corrosion cracking under stress, which is made of austenitic steels.
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