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Pin Rust and Spot Rust forming on CRCA Product [India] 

August 14, 2008

These CRCA Coils are getting rusted after ECL Line (Electrolytic Cleaning Line). Not able to observe on this line but after batch annealing pin type rust is observed at Skin Pass Mill.
My concern is that even after Cleaning why this pin type of rust is created on steel sheet.

Ravi Dashottar
Product designer - Karnataka, India