Anti-corrosion for buried pipes?
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Our company is located by the sea, and the buried pipes are primarily used for water supply and drainage. The rust resistance grade is ST3, and the anti-corrosion coating used is epoxy coal tar paint. The anti-corrosion layer consists of a primer, a topcoat, glass fiber cloth, another topcoat, glass fiber cloth again, and yet another topcoat; the dry film thickness reaches over 0.6 mm. The boss in charge of anti-corrosion treatment is a bit shady; he always makes the paint too thin, which results in failed electric spark testing, forcing us to apply more coats. Colleagues, please pay attention to the instructions regarding the mixing ratio of the paint; it is essential to prepare the paint according to the specified ratios. Each layer must be fully cured before moving on to the next one, as this ensures higher efficiency. Do not wait until the interior parts fail to cure, as this will result in a waste of time and resources. Also, stay as far away from the paint as possible and stand upwind of it to avoid being poisoned. This post was last edited by nanjingdaxue on 2009-4-2 14:37.]
The spark test did not meet the standards, so acceptance is not possible; this boss has invested a lot of labor, but it isn’t certain that this will result in cost savings.