配方类型：	METALS AND THEIR TREATMENT
配方说明：	Acid Pickling Solutions Nitric acid
配方组成：	70% HNO3 /7.9 oz/gal
配制方法：	Operating Conditions Temp. 70-90F Time 15-30 sec. Construction Details Stainless steel tank Comments Prepickle for ferric nitrate treatment*** ***Use of nitric acid prepickle increases solution life and decreases treatment time in ferric nitrate pickling. Metal Removal; Mils: 0.5-1.0

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