Denso Protal 7125 low temperature coating is perfect for winterFebruary 18, 2021 REDWIRE is news you can use from leading suppliers. Powered by FRASERS.
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A leading innovator in technology for corrosion prevention and sealing, Denso North America offers the Protal line of high-quality pipeline coatings. A key example is Protal 7125, a fast-cure, low temperature coating that is built specifically for pipeline projects in the winter, when Canadian temperatures reach freezing levels.
Protal 7125 has many uses, but is recommended most as a rehabilitation coating for already existing and functioning low-temperature pipelines.
Simple application by brush
Among the other relevant applications for this low temperature coating: station piping, girth welds, tie-ins, push racks, other laybarge tasks, and repairs for FBE fittings and fabrications. Denso also deems it suitable for new construction projects in colder temperatures when preheating or post-heating is not practical or feasible.
Denso has formulated Protal 7125 for applications to colder substrates at lower ambient temperatures. Its fast-curing action allows quick handling and back-filling in temperatures as low as -20 degrees Celsius, and it does not freeze when applied to substrates below zero degrees Celsius. As a high-build liquid coating, it can be applied simply by brush in one coat to many sections of pipelines, whether operational or under construction.
Applying this low temperature coating begins with grit blasting of the surfaces to a near-white finish and slow mixing of the coating hardener to the base with a stir stick or power mixer until it is light grey with no streaks. The inside of the container must always be scraped out. The user then pours the mixed material onto the pipeline surface and brushes, trowels, or rolls it to the desired thickness, preferably at least 20 mils, as measured by a wet-film thickness gauge. Back-filling time depends on the temperature. Cooler temperatures will extend the time periods.
Using Protal 7125 has other notable benefits, such as a build of up to 50 mils in one coat, first-rate adhesion, and high resistance to abrasion in drilling applications. It is also useful as an abrasion-resistant coating, does not shield cathodic protection, and will cure during submersion in water after application. Repair cartridges are available in 50 and 825 millilitres.
For more information, contact Denso.