DEF 38 : 1959
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
THE DE-RUSTING OF STEEL BY PHOSPHORIC ACID SOLUTIONS
28-12-1970
12-01-2013
Covers the methods of use for two solutions namely and uninhibited solution which may be used prior to phosphating and inhibited solution which shall not be used prior to phosphating but recommended for general use. Details application, preparation of de-rusting solutions, preliminary treatment of steel de-rusting procedure, treatment after de-rusting, deterioration of de-rusting solution, disposal of spent solution.
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