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Metal finishing Q&As since 1989
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Painting over zinc nickel chromate coating
We currently have carbon steel components that get a zinc nickel chromate coating and after assembly, get an epoxy paint. The machines are then used in a saltwater environment. We are examining our corrosion protection as these machines were not originally designed for sub-sea use. The machines get pretty beat up and I would like to know what some better alternatives may be for a durable corrosion resistant coating.
Jeremy WeinbergOil and Gas Pipe Machines - Lincolnshire, Illinois, USA
2007
Dear Mr Weinberg.
You can use several Topcoats from Dupont or Whitford designed for Marine applications over the Zinc Nickel.
![Khozem Vahaanwala](../portraits/khozem_vahaanwala2.jpg)
Khozem Vahaanwala
Saify Ind
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Bengaluru, Karnataka, India
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2007
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