high-efficient VCI powder

VCI powder is volatile corrosion inhibiting designed for the corrosion protection.

VCI powder is watersoluble, spayable volatile corrosion inhibiting powder designed for the corrosion protection of self-seal system (e.g. tubular structure and pipes) and metals in the enclosed space. SF/D-331 provides excellent volatility, migratory and absorbable performances, and forms a molecular protective layer on the metal surface, which can effectively protect metal against corrosion. It can be put in different sizes of bag.

Features:Excellent vapor-phase, liquid and interface protectionProvides over 12 months of continuous protectionCompletely water soluble, as an additive to water presser testingOffers superior corrosion protection to all shapes of structureEasily removes with air presser or water 

Physical and chemical propertiesAppearance: white crystalline powderPH: 6.5-7.5 (1%  aqueous solution)Solubility: 1g/2ml water(+25oC)

Typical application:Internal surface of tubular structure, pipe and vessel, etcInternal surface of compressors, turbines, engines, tanks, boilers, heat exchangesSteam cooling pipe, close cycle heating and cooling systemInternal surface of tested structure during and after water presserMachineries and spare parts during transportation and storageCavities, aperture, holes, casting body

Method of application:Apply SF/-331 in dry form by spraying easily achieved to pipe or vessel, closed after application. by using air pressure, air hose or sandblast, large conventional sandblasting system or hand blast can also be used. For powder application, with average environmental condition, use 100g/m2, the dosage can be increased for more severe condition.

In wet form, apply water presser testing soluble and then remove water solution and close vessel after application. Also can dilute  solution to spraying, printing and dipping, and then seal packing. at the ambient temperature water solution ratio 1:0.5%, the dosage can be increased for more severe condition. To increase the metal surface wetness, to apply SF/TD-101 1.0% is recommended, the dosage is 1.0% weight of SF/D-331 powder.

Metal protected:Carbon steel, steel alloy, stainless steel, aluminum and its alloy.ClearnessTo move powder residues easily by air presser and water, To move liquid form, no cleaning required, if necessary, simply rinsing or spraying with water.

Package and storage:Package: 3kg/drum, 20kg/drumStorage: keeping indoor or shelter dry place, away from sun shine below 65 degree temperature For 12 months.

Note: effective to copper and its alloy, galvanized steel, tinned plate, printed plate, can also for metal contained with iron, aluminum and its alloy, it is not effective to non-ferrous and coated metal unless it pass testing    

high-efficient VCI powder