Letter 12027

SEEKING PASSIVATION WITHOUT CHROME ON GALVANIZED SURFACE [India] 

Dear sir,

We are doing galvanizing on tubes with chromium based olive green passivation. We want to avoid passivation with chromium based solution. Is there any passivation (olive green colour) chemical without chromate. so that effluent maint. is avoided.

RAMCHANDRA TALWANDE
- DEWAS, M.P, INDIA

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