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Use of copper sulphate to protect metal

We inspect and repair oilfield tools i.e. threaded steel connections. I heard that after performing grinding to repair threads and shoulders of the oilfield connections (pin and box), we should apply copper sulphate ⇦this on eBay or Amazon [affil links] to the ground area. Can you explain the benefits and is it really worth it. The use a pipe dope to grease the connection prior to mating.

Sean Lavergne
Industrial Services - Willis, Texas
October 27, 2008

I rather doubt that you are using copper sulphate on oil well parts. It will promote rusting. You might be using a fine metallic copper based anti seize material or possibly copper plating.

James Watts
- Navarre, Florida
November 14, 2008

Welding wire is frequently coated with a very fine layer of copper deposited by immersion in copper sulphate acid solutions to delay oxidation from air. It is not intended for top resistance, long durability or tough environments.

Guillermo Marrufo
Monterrey, NL, Mexico
November 27, 2008