Rust Penetration per day
Rust Penetration per day
(OP)
After all the wide flange and purlins were delivered to the site.. it rained before we put epoxy primer on the steel. Do you need to remove every bit of rust before putting epoxy primer? What do you usually do?
Usually how many micrometer of depth does the rust penetrate into the steel per day?






RE: Rust Penetration per day
RE: Rust Penetration per day
RE: Rust Penetration per day
RE: Rust Penetration per day
Given that, you now have to clean the steel and apply a primer at least for further protection from exposure, and you have to do this under "less than ideal" field conditions.
Ideally, you would sandblast the steel to remove rust and loose mill scale. Then you would apply a sufficient thickness of a good quality primer that would be compatible with a variety of finish coats, if a finish coat is required. Otherwise, the primer will suffice for most applications except for exterior exposure.
Epoxy is not a common coating for building steel. That is usually reserved for specialty applications, bridges and high exposure conditions. For that, the steel will have to be sandblasted to a "near white" condition.
RE: Rust Penetration per day
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RE: Rust Penetration per day
RE: Rust Penetration per day
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RE: Rust Penetration per day